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Posted to notifications@skywalking.apache.org by wu...@apache.org on 2023/01/11 09:14:28 UTC

[skywalking-java] branch main updated: Add a config `agent.enable`(default: true) to support disabling agent (#439)

This is an automated email from the ASF dual-hosted git repository.

wusheng pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/skywalking-java.git


The following commit(s) were added to refs/heads/main by this push:
     new 5cffa078e1 Add a config `agent.enable`(default: true) to support disabling agent (#439)
5cffa078e1 is described below

commit 5cffa078e18dc10877934422c895d5ab5ed8ad44
Author: 吴晟 Wu Sheng <wu...@foxmail.com>
AuthorDate: Wed Jan 11 17:14:23 2023 +0800

    Add a config `agent.enable`(default: true) to support disabling agent (#439)
---
 CHANGES.md                                         |   2 +
 .../skywalking/apm/agent/core/conf/Config.java     |   5 +
 .../skywalking/apm/agent/SkyWalkingAgent.java      |  35 +--
 apm-sniffer/config/agent.config                    |   3 +
 .../service-agent/java-agent/configurations.md     | 254 +++++++++++----------
 5 files changed, 160 insertions(+), 139 deletions(-)

diff --git a/CHANGES.md b/CHANGES.md
index cc4da49a23..c7b7e6353c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -24,6 +24,8 @@ Release Notes.
 * Support to customize the collect period of JVM relative metrics.
 * Upgrade netty-codec-http2 to 4.1.86.Final.
 * Put `Agent-Version` property reading in the premain stage to avoid deadlock when using `jarsigner`.
+* Add a config `agent.enable`(default: true) to support disabling the agent through system property `-Dskywalking.agent.disable=false` 
+  or system environment variable setting `SW_AGENT_ENABLE=false`. 
 
 #### Documentation
 
diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/Config.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/Config.java
index ff075e39b8..861a0ef01f 100755
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/Config.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/conf/Config.java
@@ -183,6 +183,11 @@ public class Config {
          * Agent version. This is set by the agent kernel through reading MANIFEST.MF file in the skywalking-agent.jar.
          */
         public static String VERSION = "UNKNOWN";
+
+        /**
+         * Enable the agent kernel services and instrumentation.
+         */
+        public static boolean ENABLE = true;
     }
 
     public static class OsInfo {
diff --git a/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java b/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
index 38b6e1b8ff..dd0a072164 100644
--- a/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
+++ b/apm-sniffer/apm-agent/src/main/java/org/apache/skywalking/apm/agent/SkyWalkingAgent.java
@@ -23,7 +23,6 @@ import java.security.ProtectionDomain;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
-
 import net.bytebuddy.ByteBuddy;
 import net.bytebuddy.agent.builder.AgentBuilder;
 import net.bytebuddy.description.NamedElement;
@@ -70,13 +69,18 @@ public class SkyWalkingAgent {
         } catch (Exception e) {
             // try to resolve a new logger, and use the new logger to write the error log here
             LogManager.getLogger(SkyWalkingAgent.class)
-                    .error(e, "SkyWalking agent initialized failure. Shutting down.");
+                      .error(e, "SkyWalking agent initialized failure. Shutting down.");
             return;
         } finally {
             // refresh logger again after initialization finishes
             LOGGER = LogManager.getLogger(SkyWalkingAgent.class);
         }
 
+        if (!Config.Agent.ENABLE) {
+            LOGGER.warn("SkyWalking agent is disabled.");
+            return;
+        }
+
         try {
             pluginFinder = new PluginFinder(new PluginBootstrap().loadPlugins());
         } catch (AgentPackageNotFoundException ape) {
@@ -90,15 +94,15 @@ public class SkyWalkingAgent {
         final ByteBuddy byteBuddy = new ByteBuddy().with(TypeValidation.of(Config.Agent.IS_OPEN_DEBUGGING_CLASS));
 
         AgentBuilder agentBuilder = new AgentBuilder.Default(byteBuddy).ignore(
-                nameStartsWith("net.bytebuddy.")
-                        .or(nameStartsWith("org.slf4j."))
-                        .or(nameStartsWith("org.groovy."))
-                        .or(nameContains("javassist"))
-                        .or(nameContains(".asm."))
-                        .or(nameContains(".reflectasm."))
-                        .or(nameStartsWith("sun.reflect"))
-                        .or(allSkyWalkingAgentExcludeToolkit())
-                        .or(ElementMatchers.isSynthetic()));
+            nameStartsWith("net.bytebuddy.")
+                .or(nameStartsWith("org.slf4j."))
+                .or(nameStartsWith("org.groovy."))
+                .or(nameContains("javassist"))
+                .or(nameContains(".asm."))
+                .or(nameContains(".reflectasm."))
+                .or(nameStartsWith("sun.reflect"))
+                .or(allSkyWalkingAgentExcludeToolkit())
+                .or(ElementMatchers.isSynthetic()));
 
         JDK9ModuleExporter.EdgeClasses edgeClasses = new JDK9ModuleExporter.EdgeClasses();
         try {
@@ -140,7 +144,7 @@ public class SkyWalkingAgent {
         }
 
         Runtime.getRuntime()
-                .addShutdownHook(new Thread(ServiceManager.INSTANCE::shutdown, "skywalking service shutdown thread"));
+               .addShutdownHook(new Thread(ServiceManager.INSTANCE::shutdown, "skywalking service shutdown thread"));
     }
 
     private static class Transformer implements AgentBuilder.Transformer {
@@ -163,7 +167,7 @@ public class SkyWalkingAgent {
                 EnhanceContext context = new EnhanceContext();
                 for (AbstractClassEnhancePluginDefine define : pluginDefines) {
                     DynamicType.Builder<?> possibleNewBuilder = define.define(
-                            typeDescription, newBuilder, classLoader, context);
+                        typeDescription, newBuilder, classLoader, context);
                     if (possibleNewBuilder != null) {
                         newBuilder = possibleNewBuilder;
                     }
@@ -233,7 +237,10 @@ public class SkyWalkingAgent {
         }
 
         @Override
-        public Iterable<? extends List<Class<?>>> onError(int index, List<Class<?>> batch, Throwable throwable, List<Class<?>> types) {
+        public Iterable<? extends List<Class<?>>> onError(int index,
+                                                          List<Class<?>> batch,
+                                                          Throwable throwable,
+                                                          List<Class<?>> types) {
             LOGGER.error(throwable, "index={}, batch={}, types={}", index, batch, types);
             return Collections.emptyList();
         }
diff --git a/apm-sniffer/config/agent.config b/apm-sniffer/config/agent.config
index 3f8c535af0..7124e2e8a0 100755
--- a/apm-sniffer/config/agent.config
+++ b/apm-sniffer/config/agent.config
@@ -87,6 +87,9 @@ agent.ssl_key_path=${SW_AGENT_SSL_KEY_PATH:}
 
 agent.ssl_cert_chain_path=${SW_AGENT_SSL_CERT_CHAIN_PATH:}
 
+# Enable the agent kernel services and instrumentation.
+agent.enable=${SW_AGENT_ENABLE:true}
+
 # Limit the length of the ipv4 list size.
 osinfo.ipv4_list_size=${SW_AGENT_OSINFO_IPV4_LIST_SIZE:10}
 
diff --git a/docs/en/setup/service-agent/java-agent/configurations.md b/docs/en/setup/service-agent/java-agent/configurations.md
index 1514c0eb7b..c79c525d40 100644
--- a/docs/en/setup/service-agent/java-agent/configurations.md
+++ b/docs/en/setup/service-agent/java-agent/configurations.md
@@ -1,134 +1,138 @@
 # Table of Agent Configuration Properties
+
 This is the properties list supported in `agent/config/agent.config`.
 
-| property key                                              | Description                                                                                                                                                                                                                                                                                                                                                                                                                                    [...]
-|-----------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- [...]
-| `agent.service_name`                                      | The service name to represent a logic group providing the same capabilities/logic. Suggestion: set a unique name for every logic service group, service instance nodes share the same code, Max length is 50(UTF-8 char). Optional, once `service_name` follows `<group name>::<logic name>` format, OAP server assigns the group name to the service metadata.                                                                                [...]
-| `agent.namespace`                                         | Namespace represents a subnet, such as kubernetes namespace, or 172.10.*.*                                                                                                                                                                                                                                                                                                                                                                     [...]
-| `agent.cluster`                                           | Cluster defines the physical cluster in a data center or same network segment.                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `agent.sample_n_per_3_secs`                               | Negative or zero means off, by default.SAMPLE_N_PER_3_SECS means sampling N TraceSegment in 3 seconds tops.                                                                                                                                                                                                                                                                                                                                    [...]
-| `agent.authentication`                                    | Authentication active is based on backend setting, see application.yml for more details.For most scenarios, this needs backend extensions, only basic match auth provided in default implementation.                                                                                                                                                                                                                                           [...]
-| `agent.trace_segment_ref_limit_per_span`                  | The max number of TraceSegmentRef in a single span to keep memory cost estimatable.                                                                                                                                                                                                                                                                                                                                                            [...]
-| `agent.span_limit_per_segment`                            | The max number of spans in a single segment. Through this config item, SkyWalking keep your application memory cost estimated.                                                                                                                                                                                                                                                                                                                 [...]
-| `agent.ignore_suffix`                                     | If the operation name of the first span is included in this set, this segment should be ignored.                                                                                                                                                                                                                                                                                                                                               [...]
-| `agent.is_open_debugging_class`                           | If true, skywalking agent will save all instrumented classes files in `/debugging` folder. SkyWalking team may ask for these files in order to resolve compatible problem.                                                                                                                                                                                                                                                                     [...]
-| `agent.is_cache_enhanced_class`                           | If true, SkyWalking agent will cache all instrumented classes files to memory or disk files (decided by class cache mode), allow another java agent to enhance those classes that enhanced by SkyWalking agent. To use some Java diagnostic tools (such as BTrace, Arthas) to diagnose applications or add a custom java agent to enhance classes, you need to enable this feature.                                                            [...]
-| `agent.class_cache_mode`                                  | The instrumented classes cache mode: `MEMORY` or `FILE`. `MEMORY`: cache class bytes to memory, if instrumented classes is too many or too large, it may take up more memory. `FILE`: cache class bytes in `/class-cache` folder, automatically clean up cached class files when the application exits.                                                                                                                                        [...]
-| `agent.instance_name`                                     | Instance name is the identity of an instance, should be unique in the service. If empty, SkyWalking agent will generate an 32-bit uuid. Default, use `UUID`@`hostname` as the instance name. Max length is 50(UTF-8 char)                                                                                                                                                                                                                      [...]
-| `agent.instance_properties_json={"key":"value"}`          | Add service instance custom properties in json format.                                                                                                                                                                                                                                                                                                                                                                                         [...]
-| `agent.cause_exception_depth`                             | How depth the agent goes, when log all cause exceptions.                                                                                                                                                                                                                                                                                                                                                                                       [...]
-| `agent.force_reconnection_period `                        | Force reconnection period of grpc, based on grpc_channel_check_interval.                                                                                                                                                                                                                                                                                                                                                                       [...]
-| `agent.operation_name_threshold `                         | The operationName max length, setting this value > 190 is not recommended.                                                                                                                                                                                                                                                                                                                                                                     [...]
-| `agent.keep_tracing`                                      | Keep tracing even the backend is not available if this value is `true`.                                                                                                                                                                                                                                                                                                                                                                        [...]
-| `agent.force_tls`                                         | Force open TLS for gRPC channel if this value is `true`.                                                                                                                                                                                                                                                                                                                                                                                       [...]
-| `agent.ssl_trusted_ca_path`                               | gRPC SSL trusted ca file.                                                                                                                                                                                                                                                                                                                                                                                                                      [...]
-| `agent.ssl_key_path`                                      | The private key file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist.                                                                                                                                                                                                                                                                                                                                                             [...]
-| `agent.ssl_cert_chain_path`                               | The certificate file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist.                                                                                                                                                                                                                                                                                                                                                             [...]
-| `osinfo.ipv4_list_size`                                   | Limit the length of the ipv4 list size.                                                                                                                                                                                                                                                                                                                                                                                                        [...]
-| `collector.grpc_channel_check_interval`                   | grpc channel status check interval.                                                                                                                                                                                                                                                                                                                                                                                                            [...]
-| `collector.heartbeat_period`                              | agent heartbeat report period. Unit, second.                                                                                                                                                                                                                                                                                                                                                                                                   [...]
-| `collector.properties_report_period_factor`               | The agent sends the instance properties to the backend every `collector.heartbeat_period * collector.properties_report_period_factor` seconds                                                                                                                                                                                                                                                                                                  [...]
-| `collector.backend_service`                               | Collector SkyWalking trace receiver service addresses.                                                                                                                                                                                                                                                                                                                                                                                         [...]
-| `collector.grpc_upstream_timeout`                         | How long grpc client will timeout in sending data to upstream. Unit is second.                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `collector.get_profile_task_interval`                     | Sniffer get profile task list interval.                                                                                                                                                                                                                                                                                                                                                                                                        [...]
-| `collector.get_agent_dynamic_config_interval`             | Sniffer get agent dynamic config interval                                                                                                                                                                                                                                                                                                                                                                                                      [...]
-| `collector.is_resolve_dns_periodically`                   | If true, skywalking agent will enable periodically resolving DNS to update receiver service addresses.                                                                                                                                                                                                                                                                                                                                         [...]
-| `logging.level`                                           | Log level: TRACE, DEBUG, INFO, WARN, ERROR, OFF. Default is info.                                                                                                                                                                                                                                                                                                                                                                              [...]
-| `logging.file_name`                                       | Log file name.                                                                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `logging.output`                                          | Log output. Default is FILE. Use CONSOLE means output to stdout.                                                                                                                                                                                                                                                                                                                                                                               [...]
-| `logging.dir`                                             | Log files directory. Default is blank string, means, use "{theSkywalkingAgentJarDir}/logs  " to output logs. {theSkywalkingAgentJarDir} is the directory where the skywalking agent jar file is located                                                                                                                                                                                                                                        [...]
-| `logging.resolver`                                        | Logger resolver: `PATTERN` or `JSON`. The default is `PATTERN`, which uses `logging.pattern` to print traditional text logs. `JSON` resolver prints logs in JSON format.                                                                                                                                                                                                                                                                       [...]
-| `logging.pattern `                                        | Logging format. There are all conversion specifiers: <br>&nbsp;&nbsp;* `%level` means log level. <br>&nbsp;&nbsp;*  `%timestamp` means now of time with format `yyyy-MM-dd HH:mm:ss:SSS`.<br>&nbsp;&nbsp;*   `%thread` means name of current thread.<br>&nbsp;&nbsp;*   `%msg` means some message which user logged. <br>&nbsp;&nbsp;*  `%class` means SimpleName of TargetClass. <br>&nbsp;&nbsp;*  `%throwable` means a throwable which user [...]
-| `logging.max_file_size`                                   | The max size of log file. If the size is bigger than this, archive the current file, and write into a new file.                                                                                                                                                                                                                                                                                                                                [...]
-| `logging.max_history_files`                               | The max history log files. When rollover happened, if log files exceed this number,then the oldest file will be delete. Negative or zero means off, by default.                                                                                                                                                                                                                                                                                [...]
-| `statuscheck.ignored_exceptions`                          | Listed exceptions would not be treated as an error. Because in some codes, the exception is being used as a way of controlling business flow.                                                                                                                                                                                                                                                                                                  [...]
-| `statuscheck.max_recursive_depth`                         | The max recursive depth when checking the exception traced by the agent. Typically, we don't recommend setting this more than 10, which could cause a performance issue. Negative value and 0 would be ignored, which means all exceptions would make the span tagged in error status.                                                                                                                                                         [...]
-| `correlation.element_max_number`                          | Max element count in the correlation context.                                                                                                                                                                                                                                                                                                                                                                                                  [...]
-| `correlation.value_max_length`                            | Max value length of each element.                                                                                                                                                                                                                                                                                                                                                                                                              [...]
-| `correlation.auto_tag_keys`                               | Tag the span by the key/value in the correlation context, when the keys listed here exist.                                                                                                                                                                                                                                                                                                                                                     [...]
-| `jvm.buffer_size`                                         | The buffer size of collected JVM info.                                                                                                                                                                                                                                                                                                                                                                                                         [...]
-| `jvm.metrics_collect_period`                              | The period in seconds of JVM metrics collection.  Unit is second.                                                                                                                                                                                                                                                                                                                                                                              [...]
-| `buffer.channel_size`                                     | The buffer channel size.                                                                                                                                                                                                                                                                                                                                                                                                                       [...]
-| `buffer.buffer_size`                                      | The buffer size.                                                                                                                                                                                                                                                                                                                                                                                                                               [...]
-| `profile.active`                                          | If true, skywalking agent will enable profile when user create a new profile task. Otherwise disable profile.                                                                                                                                                                                                                                                                                                                                  [...]
-| `profile.max_parallel`                                    | Parallel monitor segment count                                                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `profile.duration`                                        | Max monitor segment time(minutes), if current segment monitor time out of limit, then stop it.                                                                                                                                                                                                                                                                                                                                                 [...]
-| `profile.dump_max_stack_depth`                            | Max dump thread stack depth                                                                                                                                                                                                                                                                                                                                                                                                                    [...]
-| `profile.snapshot_transport_buffer_size`                  | Snapshot transport to backend buffer size                                                                                                                                                                                                                                                                                                                                                                                                      [...]
-| `meter.active`                                            | If true, the agent collects and reports metrics to the backend.                                                                                                                                                                                                                                                                                                                                                                                [...]
-| `meter.report_interval`                                   | Report meters interval. The unit is second                                                                                                                                                                                                                                                                                                                                                                                                     [...]
-| `meter.max_meter_size`                                    | Max size of the meter pool                                                                                                                                                                                                                                                                                                                                                                                                                     [...]
-| `log.max_message_size`                                    | The max size of message to send to server.Default is 10 MB.                                                                                                                                                                                                                                                                                                                                                                                    [...]
-| `plugin.mount`                                            | Mount the specific folders of the plugins. Plugins in mounted folders would work.                                                                                                                                                                                                                                                                                                                                                              [...]
-| `plugin.peer_max_length `                                 | Peer maximum description limit.                                                                                                                                                                                                                                                                                                                                                                                                                [...]
-| `plugin.exclude_plugins `                                 | Exclude some plugins define in plugins dir,Multiple plugins are separated by comma.Plugin names is defined in [Agent plugin list](Plugin-list.md)                                                                                                                                                                                                                                                                                              [...]
-| `plugin.mongodb.trace_param`                              | If true, trace all the parameters in MongoDB access, default is false. Only trace the operation, not include parameters.                                                                                                                                                                                                                                                                                                                       [...]
-| `plugin.mongodb.filter_length_limit`                      | If set to positive number, the `WriteRequest.params` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                           [...]
-| `plugin.elasticsearch.trace_dsl`                          | If true, trace all the DSL(Domain Specific Language) in ElasticSearch access, default is false.                                                                                                                                                                                                                                                                                                                                                [...]
-| `plugin.springmvc.use_qualified_name_as_endpoint_name`    | If true, the fully qualified method name will be used as the endpoint name instead of the request URL, default is false.                                                                                                                                                                                                                                                                                                                       [...]
-| `plugin.toolkit.use_qualified_name_as_operation_name`     | If true, the fully qualified method name will be used as the operation name instead of the given operation name, default is false.                                                                                                                                                                                                                                                                                                             [...]
-| `plugin.jdbc.trace_sql_parameters`                        | If set to true, the parameters of the sql (typically `java.sql.PreparedStatement`) would be collected.                                                                                                                                                                                                                                                                                                                                         [...]
-| `plugin.jdbc.sql_parameters_max_length`                   | If set to positive number, the `db.sql.parameters` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                             [...]
-| `plugin.jdbc.sql_body_max_length`                         | If set to positive number, the `db.statement` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                                  [...]
-| `plugin.solrj.trace_statement`                            | If true, trace all the query parameters(include deleteByIds and deleteByQuery) in Solr query request, default is false.                                                                                                                                                                                                                                                                                                                        [...]
-| `plugin.solrj.trace_ops_params`                           | If true, trace all the operation parameters in Solr request, default is false.                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.light4j.trace_handler_chain`                      | If true, trace all middleware/business handlers that are part of the Light4J handler chain for a request.                                                                                                                                                                                                                                                                                                                                      [...]
+| property key                                                    | Description                                                                                                                                                                                                                                                                                                                                                                                                                              [...]
+|-----------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- [...]
+| `agent.service_name`                                            | The service name to represent a logic group providing the same capabilities/logic. Suggestion: set a unique name for every logic service group, service instance nodes share the same code, Max length is 50(UTF-8 char). Optional, once `service_name` follows `<group name>::<logic name>` format, OAP server assigns the group name to the service metadata.                                                                          [...]
+| `agent.namespace`                                               | Namespace represents a subnet, such as kubernetes namespace, or 172.10.*.*                                                                                                                                                                                                                                                                                                                                                               [...]
+| `agent.cluster`                                                 | Cluster defines the physical cluster in a data center or same network segment.                                                                                                                                                                                                                                                                                                                                                           [...]
+| `agent.sample_n_per_3_secs`                                     | Negative or zero means off, by default.SAMPLE_N_PER_3_SECS means sampling N TraceSegment in 3 seconds tops.                                                                                                                                                                                                                                                                                                                              [...]
+| `agent.authentication`                                          | Authentication active is based on backend setting, see application.yml for more details.For most scenarios, this needs backend extensions, only basic match auth provided in default implementation.                                                                                                                                                                                                                                     [...]
+| `agent.trace_segment_ref_limit_per_span`                        | The max number of TraceSegmentRef in a single span to keep memory cost estimatable.                                                                                                                                                                                                                                                                                                                                                      [...]
+| `agent.span_limit_per_segment`                                  | The max number of spans in a single segment. Through this config item, SkyWalking keep your application memory cost estimated.                                                                                                                                                                                                                                                                                                           [...]
+| `agent.ignore_suffix`                                           | If the operation name of the first span is included in this set, this segment should be ignored.                                                                                                                                                                                                                                                                                                                                         [...]
+| `agent.is_open_debugging_class`                                 | If true, skywalking agent will save all instrumented classes files in `/debugging` folder. SkyWalking team may ask for these files in order to resolve compatible problem.                                                                                                                                                                                                                                                               [...]
+| `agent.is_cache_enhanced_class`                                 | If true, SkyWalking agent will cache all instrumented classes files to memory or disk files (decided by class cache mode), allow another java agent to enhance those classes that enhanced by SkyWalking agent. To use some Java diagnostic tools (such as BTrace, Arthas) to diagnose applications or add a custom java agent to enhance classes, you need to enable this feature.                                                      [...]
+| `agent.class_cache_mode`                                        | The instrumented classes cache mode: `MEMORY` or `FILE`. `MEMORY`: cache class bytes to memory, if instrumented classes is too many or too large, it may take up more memory. `FILE`: cache class bytes in `/class-cache` folder, automatically clean up cached class files when the application exits.                                                                                                                                  [...]
+| `agent.instance_name`                                           | Instance name is the identity of an instance, should be unique in the service. If empty, SkyWalking agent will generate an 32-bit uuid. Default, use `UUID`@`hostname` as the instance name. Max length is 50(UTF-8 char)                                                                                                                                                                                                                [...]
+| `agent.instance_properties_json={"key":"value"}`                | Add service instance custom properties in json format.                                                                                                                                                                                                                                                                                                                                                                                   [...]
+| `agent.cause_exception_depth`                                   | How depth the agent goes, when log all cause exceptions.                                                                                                                                                                                                                                                                                                                                                                                 [...]
+| `agent.force_reconnection_period `                              | Force reconnection period of grpc, based on grpc_channel_check_interval.                                                                                                                                                                                                                                                                                                                                                                 [...]
+| `agent.operation_name_threshold `                               | The operationName max length, setting this value > 190 is not recommended.                                                                                                                                                                                                                                                                                                                                                               [...]
+| `agent.keep_tracing`                                            | Keep tracing even the backend is not available if this value is `true`.                                                                                                                                                                                                                                                                                                                                                                  [...]
+| `agent.force_tls`                                               | Force open TLS for gRPC channel if this value is `true`.                                                                                                                                                                                                                                                                                                                                                                                 [...]
+| `agent.ssl_trusted_ca_path`                                     | gRPC SSL trusted ca file.                                                                                                                                                                                                                                                                                                                                                                                                                [...]
+| `agent.ssl_key_path`                                            | The private key file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist.                                                                                                                                                                                                                                                                                                                                                       [...]
+| `agent.ssl_cert_chain_path`                                     | The certificate file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist.                                                                                                                                                                                                                                                                                                                                                       [...]
+| `agent.enable`                                                  | Enable the agent kernel services and instrumentation.                                                                                                                                                                                                                                                                                                                                                                                    [...]
+| `osinfo.ipv4_list_size`                                         | Limit the length of the ipv4 list size.                                                                                                                                                                                                                                                                                                                                                                                                  [...]
+| `collector.grpc_channel_check_interval`                         | grpc channel status check interval.                                                                                                                                                                                                                                                                                                                                                                                                      [...]
+| `collector.heartbeat_period`                                    | agent heartbeat report period. Unit, second.                                                                                                                                                                                                                                                                                                                                                                                             [...]
+| `collector.properties_report_period_factor`                     | The agent sends the instance properties to the backend every `collector.heartbeat_period * collector.properties_report_period_factor` seconds                                                                                                                                                                                                                                                                                            [...]
+| `collector.backend_service`                                     | Collector SkyWalking trace receiver service addresses.                                                                                                                                                                                                                                                                                                                                                                                   [...]
+| `collector.grpc_upstream_timeout`                               | How long grpc client will timeout in sending data to upstream. Unit is second.                                                                                                                                                                                                                                                                                                                                                           [...]
+| `collector.get_profile_task_interval`                           | Sniffer get profile task list interval.                                                                                                                                                                                                                                                                                                                                                                                                  [...]
+| `collector.get_agent_dynamic_config_interval`                   | Sniffer get agent dynamic config interval                                                                                                                                                                                                                                                                                                                                                                                                [...]
+| `collector.is_resolve_dns_periodically`                         | If true, skywalking agent will enable periodically resolving DNS to update receiver service addresses.                                                                                                                                                                                                                                                                                                                                   [...]
+| `logging.level`                                                 | Log level: TRACE, DEBUG, INFO, WARN, ERROR, OFF. Default is info.                                                                                                                                                                                                                                                                                                                                                                        [...]
+| `logging.file_name`                                             | Log file name.                                                                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `logging.output`                                                | Log output. Default is FILE. Use CONSOLE means output to stdout.                                                                                                                                                                                                                                                                                                                                                                         [...]
+| `logging.dir`                                                   | Log files directory. Default is blank string, means, use "{theSkywalkingAgentJarDir}/logs  " to output logs. {theSkywalkingAgentJarDir} is the directory where the skywalking agent jar file is located                                                                                                                                                                                                                                  [...]
+| `logging.resolver`                                              | Logger resolver: `PATTERN` or `JSON`. The default is `PATTERN`, which uses `logging.pattern` to print traditional text logs. `JSON` resolver prints logs in JSON format.                                                                                                                                                                                                                                                                 [...]
+| `logging.pattern `                                              | Logging format. There are all conversion specifiers: <br>&nbsp;&nbsp;* `%level` means log level. <br>&nbsp;&nbsp;*  `%timestamp` means now of time with format `yyyy-MM-dd HH:mm:ss:SSS`.<br>&nbsp;&nbsp;*   `%thread` means name of current thread.<br>&nbsp;&nbsp;*   `%msg` means some message which user logged. <br>&nbsp;&nbsp;*  `%class` means SimpleName of TargetClass. <br>&nbsp;&nbsp;*  `%throwable` means a throwable whic [...]
+| `logging.max_file_size`                                         | The max size of log file. If the size is bigger than this, archive the current file, and write into a new file.                                                                                                                                                                                                                                                                                                                          [...]
+| `logging.max_history_files`                                     | The max history log files. When rollover happened, if log files exceed this number,then the oldest file will be delete. Negative or zero means off, by default.                                                                                                                                                                                                                                                                          [...]
+| `statuscheck.ignored_exceptions`                                | Listed exceptions would not be treated as an error. Because in some codes, the exception is being used as a way of controlling business flow.                                                                                                                                                                                                                                                                                            [...]
+| `statuscheck.max_recursive_depth`                               | The max recursive depth when checking the exception traced by the agent. Typically, we don't recommend setting this more than 10, which could cause a performance issue. Negative value and 0 would be ignored, which means all exceptions would make the span tagged in error status.                                                                                                                                                   [...]
+| `correlation.element_max_number`                                | Max element count in the correlation context.                                                                                                                                                                                                                                                                                                                                                                                            [...]
+| `correlation.value_max_length`                                  | Max value length of each element.                                                                                                                                                                                                                                                                                                                                                                                                        [...]
+| `correlation.auto_tag_keys`                                     | Tag the span by the key/value in the correlation context, when the keys listed here exist.                                                                                                                                                                                                                                                                                                                                               [...]
+| `jvm.buffer_size`                                               | The buffer size of collected JVM info.                                                                                                                                                                                                                                                                                                                                                                                                   [...]
+| `jvm.metrics_collect_period`                                    | The period in seconds of JVM metrics collection.  Unit is second.                                                                                                                                                                                                                                                                                                                                                                        [...]
+| `buffer.channel_size`                                           | The buffer channel size.                                                                                                                                                                                                                                                                                                                                                                                                                 [...]
+| `buffer.buffer_size`                                            | The buffer size.                                                                                                                                                                                                                                                                                                                                                                                                                         [...]
+| `profile.active`                                                | If true, skywalking agent will enable profile when user create a new profile task. Otherwise disable profile.                                                                                                                                                                                                                                                                                                                            [...]
+| `profile.max_parallel`                                          | Parallel monitor segment count                                                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `profile.duration`                                              | Max monitor segment time(minutes), if current segment monitor time out of limit, then stop it.                                                                                                                                                                                                                                                                                                                                           [...]
+| `profile.dump_max_stack_depth`                                  | Max dump thread stack depth                                                                                                                                                                                                                                                                                                                                                                                                              [...]
+| `profile.snapshot_transport_buffer_size`                        | Snapshot transport to backend buffer size                                                                                                                                                                                                                                                                                                                                                                                                [...]
+| `meter.active`                                                  | If true, the agent collects and reports metrics to the backend.                                                                                                                                                                                                                                                                                                                                                                          [...]
+| `meter.report_interval`                                         | Report meters interval. The unit is second                                                                                                                                                                                                                                                                                                                                                                                               [...]
+| `meter.max_meter_size`                                          | Max size of the meter pool                                                                                                                                                                                                                                                                                                                                                                                                               [...]
+| `log.max_message_size`                                          | The max size of message to send to server.Default is 10 MB.                                                                                                                                                                                                                                                                                                                                                                              [...]
+| `plugin.mount`                                                  | Mount the specific folders of the plugins. Plugins in mounted folders would work.                                                                                                                                                                                                                                                                                                                                                        [...]
+| `plugin.peer_max_length `                                       | Peer maximum description limit.                                                                                                                                                                                                                                                                                                                                                                                                          [...]
+| `plugin.exclude_plugins `                                       | Exclude some plugins define in plugins dir,Multiple plugins are separated by comma.Plugin names is defined in [Agent plugin list](Plugin-list.md)                                                                                                                                                                                                                                                                                        [...]
+| `plugin.mongodb.trace_param`                                    | If true, trace all the parameters in MongoDB access, default is false. Only trace the operation, not include parameters.                                                                                                                                                                                                                                                                                                                 [...]
+| `plugin.mongodb.filter_length_limit`                            | If set to positive number, the `WriteRequest.params` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                     [...]
+| `plugin.elasticsearch.trace_dsl`                                | If true, trace all the DSL(Domain Specific Language) in ElasticSearch access, default is false.                                                                                                                                                                                                                                                                                                                                          [...]
+| `plugin.springmvc.use_qualified_name_as_endpoint_name`          | If true, the fully qualified method name will be used as the endpoint name instead of the request URL, default is false.                                                                                                                                                                                                                                                                                                                 [...]
+| `plugin.toolkit.use_qualified_name_as_operation_name`           | If true, the fully qualified method name will be used as the operation name instead of the given operation name, default is false.                                                                                                                                                                                                                                                                                                       [...]
+| `plugin.jdbc.trace_sql_parameters`                              | If set to true, the parameters of the sql (typically `java.sql.PreparedStatement`) would be collected.                                                                                                                                                                                                                                                                                                                                   [...]
+| `plugin.jdbc.sql_parameters_max_length`                         | If set to positive number, the `db.sql.parameters` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                       [...]
+| `plugin.jdbc.sql_body_max_length`                               | If set to positive number, the `db.statement` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                            [...]
+| `plugin.solrj.trace_statement`                                  | If true, trace all the query parameters(include deleteByIds and deleteByQuery) in Solr query request, default is false.                                                                                                                                                                                                                                                                                                                  [...]
+| `plugin.solrj.trace_ops_params`                                 | If true, trace all the operation parameters in Solr request, default is false.                                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.light4j.trace_handler_chain`                            | If true, trace all middleware/business handlers that are part of the Light4J handler chain for a request.                                                                                                                                                                                                                                                                                                                                [...]
 | `plugin.springtransaction.simplify_transaction_definition_name` | If true, the transaction definition name will be simplified.                                                                                                                                                                                                                                                                                                                                                                             [...]
-| `plugin.jdkthreading.threading_class_prefixes`            | Threading classes (`java.lang.Runnable` and `java.util.concurrent.Callable`) and their subclasses, including anonymous inner classes whose name match any one of the `THREADING_CLASS_PREFIXES` (splitted by `,`) will be instrumented, make sure to only specify as narrow prefixes as what you're expecting to instrument, (`java.` and `javax.` will be ignored due to safety issues)                                                       [...]
-| `plugin.tomcat.collect_http_params`                       | This config item controls that whether the Tomcat plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                                        [...]
-| `plugin.springmvc.collect_http_params`                    | This config item controls that whether the SpringMVC plugin should collect the parameters of the request, when your Spring application is based on Tomcat, consider only setting either `plugin.tomcat.collect_http_params` or `plugin.springmvc.collect_http_params`. Also, activate implicitly in the profiled trace.                                                                                                                        [...]
-| `plugin.httpclient.collect_http_params`                   | This config item controls that whether the HttpClient plugin should collect the parameters of the request                                                                                                                                                                                                                                                                                                                                      [...]
-| `plugin.http.http_params_length_threshold`                | When `COLLECT_HTTP_PARAMS` is enabled, how many characters to keep and send to the OAP backend, use negative values to keep and send the complete parameters, NB. this config item is added for the sake of performance.                                                                                                                                                                                                                       [...]
-| `plugin.http.http_headers_length_threshold`               | When `include_http_headers` declares header names, this threshold controls the length limitation of all header values. use negative values to keep and send the complete headers. Note. this config item is added for the sake of performance.                                                                                                                                                                                                 [...]
-| `plugin.http.include_http_headers`                        | Set the header names, which should be collected by the plugin. Header name must follow `javax.servlet.http` definition. Multiple names should be split by comma.                                                                                                                                                                                                                                                                               [...]
-| `plugin.feign.collect_request_body`                       | This config item controls that whether the Feign plugin should collect the http body of the request.                                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.feign.filter_length_limit`                        | When `COLLECT_REQUEST_BODY` is enabled, how many characters to keep and send to the OAP backend, use negative values to keep and send the complete body.                                                                                                                                                                                                                                                                                       [...]
-| `plugin.feign.supported_content_types_prefix`             | When `COLLECT_REQUEST_BODY` is enabled and content-type start with SUPPORTED_CONTENT_TYPES_PREFIX, collect the body of the request , multiple paths should be separated by `,`                                                                                                                                                                                                                                                                 [...]
-| `plugin.influxdb.trace_influxql`                          | If true, trace all the influxql(query and write) in InfluxDB access, default is true.                                                                                                                                                                                                                                                                                                                                                          [...]
-| `plugin.dubbo.collect_consumer_arguments`                 | Apache Dubbo consumer collect `arguments` in RPC call, use `Object#toString` to collect `arguments`.                                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.dubbo.consumer_arguments_length_threshold`        | When `plugin.dubbo.collect_consumer_arguments` is `true`, Arguments of length from the front will to the OAP backend                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.dubbo.collect_provider_arguments`                 | Apache Dubbo provider collect `arguments` in RPC call, use `Object#toString` to collect `arguments`.                                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.dubbo.provider_arguments_length_threshold`        | When `plugin.dubbo.collect_provider_arguments` is `true`, Arguments of length from the front will to the OAP backend                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.kafka.bootstrap_servers`                          | A list of host/port pairs to use for establishing the initial connection to the Kafka cluster.                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.kafka.get_topic_timeout`                          | Timeout period of reading topics from the Kafka server, the unit is second.                                                                                                                                                                                                                                                                                                                                                                    [...]
-| `plugin.kafka.producer_config`                            | Kafka producer configuration. Read [producer configure](http://kafka.apache.org/24/documentation.html#producerconfigs) to get more details. Check [Kafka report doc](advanced-reporters.md#kafka-reporter) for more details and examples.                                                                                                                                                                                                      [...]
-| `plugin.kafka.producer_config_json`                       | Configure Kafka Producer configuration in JSON format. Notice it will be overridden by `plugin.kafka.producer_config[key]`, if the key duplication.                                                                                                                                                                                                                                                                                            [...]
-| `plugin.kafka.topic_meter`                                | Specify which Kafka topic name for Meter System data to report to.                                                                                                                                                                                                                                                                                                                                                                             [...]
-| `plugin.kafka.topic_metrics`                              | Specify which Kafka topic name for JVM metrics data to report to.                                                                                                                                                                                                                                                                                                                                                                              [...]
-| `plugin.kafka.topic_segment`                              | Specify which Kafka topic name for traces data to report to.                                                                                                                                                                                                                                                                                                                                                                                   [...]
-| `plugin.kafka.topic_profiling`                            | Specify which Kafka topic name for Thread Profiling snapshot to report to.                                                                                                                                                                                                                                                                                                                                                                     [...]
-| `plugin.kafka.topic_management`                           | Specify which Kafka topic name for the register or heartbeat data of Service Instance to report to.                                                                                                                                                                                                                                                                                                                                            [...]
-| `plugin.kafka.topic_logging`                              | Specify which Kafka topic name for the logging data to report to.                                                                                                                                                                                                                                                                                                                                                                              [...]
-| `plugin.kafka.namespace`                                  | isolate multi OAP server when using same Kafka cluster (final topic name will append namespace before Kafka topics with `-` ).                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.springannotation.classname_match_regex`           | Match spring beans with regular expression for the class name. Multiple expressions could be separated by a comma. This only works when `Spring annotation plugin` has been activated.                                                                                                                                                                                                                                                         [...]
-| `plugin.toolkit.log.transmit_formatted`                   | Whether or not to transmit logged data as formatted or un-formatted.                                                                                                                                                                                                                                                                                                                                                                           [...]
-| `plugin.lettuce.trace_redis_parameters`                   | If set to true, the parameters of Redis commands would be collected by Lettuce agent.                                                                                                                                                                                                                                                                                                                                                          [...]
-| `plugin.lettuce.redis_parameter_max_length`               | If set to positive number and `plugin.lettuce.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                              [...]
-| `plugin.jedis.trace_redis_parameters`                     | If set to true, the parameters of Redis commands would be collected by Jedis agent.                                                                                                                                                                                                                                                                                                                                                            [...]
-| `plugin.jedis.redis_parameter_max_length`                 | If set to positive number and `plugin.jedis.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                                [...]
-| `plugin.jedis.operation_mapping_write`                    | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.jedis.operation_mapping_read  `                   | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                                  [...]
-| `plugin.redisson.trace_redis_parameters`                  | If set to true, the parameters of Redis commands would be collected by Redisson agent.                                                                                                                                                                                                                                                                                                                                                         [...]
-| `plugin.redisson.redis_parameter_max_length`              | If set to positive number and `plugin.redisson.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                             [...]
-| `plugin.neo4j.trace_cypher_parameters`                    | If set to true, the parameters of the cypher would be collected.                                                                                                                                                                                                                                                                                                                                                                               [...]
-| `plugin.neo4j.cypher_parameters_max_length`               | If set to positive number, the `db.cypher.parameters` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                          [...]
-| `plugin.neo4j.cypher_body_max_length`                     | If set to positive number, the `db.statement` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                                  [...]
-| `plugin.cpupolicy.sample_cpu_usage_percent_limit`         | If set to a positive number and activate `trace sampler CPU policy plugin`, the trace would not be collected when agent process CPU usage percent is greater than `plugin.cpupolicy.sample_cpu_usage_percent_limit`.                                                                                                                                                                                                                           [...]
-| `plugin.micronauthttpclient.collect_http_params`          | This config item controls that whether the Micronaut http client plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                         [...]
-| `plugin.micronauthttpserver.collect_http_params`          | This config item controls that whether the Micronaut http server plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                         [...]
-| `plugin.memcached.operation_mapping_write`                | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.memcached.operation_mapping_read`                 | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                                  [...]
-| `plugin.ehcache.operation_mapping_write`                  | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.ehcache.operation_mapping_read`                   | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                                  [...]
-| `plugin.guavacache.operation_mapping_write`               | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                                 [...]
-| `plugin.guavacache.operation_mapping_read`                | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                                  [...]
-
+| `plugin.jdkthreading.threading_class_prefixes`                  | Threading classes (`java.lang.Runnable` and `java.util.concurrent.Callable`) and their subclasses, including anonymous inner classes whose name match any one of the `THREADING_CLASS_PREFIXES` (splitted by `,`) will be instrumented, make sure to only specify as narrow prefixes as what you're expecting to instrument, (`java.` and `javax.` will be ignored due to safety issues)                                                 [...]
+| `plugin.tomcat.collect_http_params`                             | This config item controls that whether the Tomcat plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                                  [...]
+| `plugin.springmvc.collect_http_params`                          | This config item controls that whether the SpringMVC plugin should collect the parameters of the request, when your Spring application is based on Tomcat, consider only setting either `plugin.tomcat.collect_http_params` or `plugin.springmvc.collect_http_params`. Also, activate implicitly in the profiled trace.                                                                                                                  [...]
+| `plugin.httpclient.collect_http_params`                         | This config item controls that whether the HttpClient plugin should collect the parameters of the request                                                                                                                                                                                                                                                                                                                                [...]
+| `plugin.http.http_params_length_threshold`                      | When `COLLECT_HTTP_PARAMS` is enabled, how many characters to keep and send to the OAP backend, use negative values to keep and send the complete parameters, NB. this config item is added for the sake of performance.                                                                                                                                                                                                                 [...]
+| `plugin.http.http_headers_length_threshold`                     | When `include_http_headers` declares header names, this threshold controls the length limitation of all header values. use negative values to keep and send the complete headers. Note. this config item is added for the sake of performance.                                                                                                                                                                                           [...]
+| `plugin.http.include_http_headers`                              | Set the header names, which should be collected by the plugin. Header name must follow `javax.servlet.http` definition. Multiple names should be split by comma.                                                                                                                                                                                                                                                                         [...]
+| `plugin.feign.collect_request_body`                             | This config item controls that whether the Feign plugin should collect the http body of the request.                                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.feign.filter_length_limit`                              | When `COLLECT_REQUEST_BODY` is enabled, how many characters to keep and send to the OAP backend, use negative values to keep and send the complete body.                                                                                                                                                                                                                                                                                 [...]
+| `plugin.feign.supported_content_types_prefix`                   | When `COLLECT_REQUEST_BODY` is enabled and content-type start with SUPPORTED_CONTENT_TYPES_PREFIX, collect the body of the request , multiple paths should be separated by `,`                                                                                                                                                                                                                                                           [...]
+| `plugin.influxdb.trace_influxql`                                | If true, trace all the influxql(query and write) in InfluxDB access, default is true.                                                                                                                                                                                                                                                                                                                                                    [...]
+| `plugin.dubbo.collect_consumer_arguments`                       | Apache Dubbo consumer collect `arguments` in RPC call, use `Object#toString` to collect `arguments`.                                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.dubbo.consumer_arguments_length_threshold`              | When `plugin.dubbo.collect_consumer_arguments` is `true`, Arguments of length from the front will to the OAP backend                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.dubbo.collect_provider_arguments`                       | Apache Dubbo provider collect `arguments` in RPC call, use `Object#toString` to collect `arguments`.                                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.dubbo.provider_arguments_length_threshold`              | When `plugin.dubbo.collect_provider_arguments` is `true`, Arguments of length from the front will to the OAP backend                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.kafka.bootstrap_servers`                                | A list of host/port pairs to use for establishing the initial connection to the Kafka cluster.                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.kafka.get_topic_timeout`                                | Timeout period of reading topics from the Kafka server, the unit is second.                                                                                                                                                                                                                                                                                                                                                              [...]
+| `plugin.kafka.producer_config`                                  | Kafka producer configuration. Read [producer configure](http://kafka.apache.org/24/documentation.html#producerconfigs) to get more details. Check [Kafka report doc](advanced-reporters.md#kafka-reporter) for more details and examples.                                                                                                                                                                                                [...]
+| `plugin.kafka.producer_config_json`                             | Configure Kafka Producer configuration in JSON format. Notice it will be overridden by `plugin.kafka.producer_config[key]`, if the key duplication.                                                                                                                                                                                                                                                                                      [...]
+| `plugin.kafka.topic_meter`                                      | Specify which Kafka topic name for Meter System data to report to.                                                                                                                                                                                                                                                                                                                                                                       [...]
+| `plugin.kafka.topic_metrics`                                    | Specify which Kafka topic name for JVM metrics data to report to.                                                                                                                                                                                                                                                                                                                                                                        [...]
+| `plugin.kafka.topic_segment`                                    | Specify which Kafka topic name for traces data to report to.                                                                                                                                                                                                                                                                                                                                                                             [...]
+| `plugin.kafka.topic_profiling`                                  | Specify which Kafka topic name for Thread Profiling snapshot to report to.                                                                                                                                                                                                                                                                                                                                                               [...]
+| `plugin.kafka.topic_management`                                 | Specify which Kafka topic name for the register or heartbeat data of Service Instance to report to.                                                                                                                                                                                                                                                                                                                                      [...]
+| `plugin.kafka.topic_logging`                                    | Specify which Kafka topic name for the logging data to report to.                                                                                                                                                                                                                                                                                                                                                                        [...]
+| `plugin.kafka.namespace`                                        | isolate multi OAP server when using same Kafka cluster (final topic name will append namespace before Kafka topics with `-` ).                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.springannotation.classname_match_regex`                 | Match spring beans with regular expression for the class name. Multiple expressions could be separated by a comma. This only works when `Spring annotation plugin` has been activated.                                                                                                                                                                                                                                                   [...]
+| `plugin.toolkit.log.transmit_formatted`                         | Whether or not to transmit logged data as formatted or un-formatted.                                                                                                                                                                                                                                                                                                                                                                     [...]
+| `plugin.lettuce.trace_redis_parameters`                         | If set to true, the parameters of Redis commands would be collected by Lettuce agent.                                                                                                                                                                                                                                                                                                                                                    [...]
+| `plugin.lettuce.redis_parameter_max_length`                     | If set to positive number and `plugin.lettuce.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                        [...]
+| `plugin.jedis.trace_redis_parameters`                           | If set to true, the parameters of Redis commands would be collected by Jedis agent.                                                                                                                                                                                                                                                                                                                                                      [...]
+| `plugin.jedis.redis_parameter_max_length`                       | If set to positive number and `plugin.jedis.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                          [...]
+| `plugin.jedis.operation_mapping_write`                          | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.jedis.operation_mapping_read  `                         | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                            [...]
+| `plugin.redisson.trace_redis_parameters`                        | If set to true, the parameters of Redis commands would be collected by Redisson agent.                                                                                                                                                                                                                                                                                                                                                   [...]
+| `plugin.redisson.redis_parameter_max_length`                    | If set to positive number and `plugin.redisson.trace_redis_parameters` is set to `true`, Redis command parameters would be collected and truncated to this length.                                                                                                                                                                                                                                                                       [...]
+| `plugin.neo4j.trace_cypher_parameters`                          | If set to true, the parameters of the cypher would be collected.                                                                                                                                                                                                                                                                                                                                                                         [...]
+| `plugin.neo4j.cypher_parameters_max_length`                     | If set to positive number, the `db.cypher.parameters` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                    [...]
+| `plugin.neo4j.cypher_body_max_length`                           | If set to positive number, the `db.statement` would be truncated to this length, otherwise it would be completely saved, which may cause performance problem.                                                                                                                                                                                                                                                                            [...]
+| `plugin.cpupolicy.sample_cpu_usage_percent_limit`               | If set to a positive number and activate `trace sampler CPU policy plugin`, the trace would not be collected when agent process CPU usage percent is greater than `plugin.cpupolicy.sample_cpu_usage_percent_limit`.                                                                                                                                                                                                                     [...]
+| `plugin.micronauthttpclient.collect_http_params`                | This config item controls that whether the Micronaut http client plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                   [...]
+| `plugin.micronauthttpserver.collect_http_params`                | This config item controls that whether the Micronaut http server plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                   [...]
+| `plugin.memcached.operation_mapping_write`                      | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.memcached.operation_mapping_read`                       | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                            [...]
+| `plugin.ehcache.operation_mapping_write`                        | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.ehcache.operation_mapping_read`                         | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                            [...]
+| `plugin.guavacache.operation_mapping_write`                     | Specify which command should be converted to `write` operation                                                                                                                                                                                                                                                                                                                                                                           [...]
+| `plugin.guavacache.operation_mapping_read`                      | Specify which command should be converted to `read` operation                                                                                                                                                                                                                                                                                                                                                                            [...]
 
 # Reset Collection/Map type configurations as empty collection.
 
-* Collection type config, e.g.  using ` plugin.kafka.topics=` 
-to override default `plugin.kafka.topics=a,b,c,d` 
-* Map type config, e.g. using `plugin.kafka.producer_config[]=` to override default `plugin.kafka.producer_config[key]=value`
+* Collection type config, e.g. using ` plugin.kafka.topics=`
+  to override default `plugin.kafka.topics=a,b,c,d`
+* Map type config, e.g. using `plugin.kafka.producer_config[]=` to override
+  default `plugin.kafka.producer_config[key]=value`
 
 # Dynamic Configurations
-All configurations above are static, if you need to change some agent settings at runtime, please read [CDS - Configuration Discovery Service document](configuration-discovery.md) for more details.
+
+All configurations above are static, if you need to change some agent settings at runtime, please
+read [CDS - Configuration Discovery Service document](configuration-discovery.md) for more details.