[GitHub] [skywalking] soander commented on a diff in pull request #9620: Support the telegraf receiver plugin module

[GitBox <gi...@apache.org>]

soander commented on code in PR #9620:
URL: https://github.com/apache/skywalking/pull/9620#discussion_r1000252495


##########
docs/en/setup/backend/backend-vm-monitoring.md:
##########
@@ -3,38 +3,63 @@ SkyWalking leverages Prometheus node-exporter to collect metrics data from the V
 [OpenTelemetry receiver](opentelemetry-receiver.md) and into the [Meter System](./../../concepts-and-designs/meter.md).
 VM entity as a `Service` in OAP and on the `Layer: OS_LINUX`.
 
+SkyWalking also provides InfluxDB Telegraf to receive VMs' metrics data by [Telegraf receiver](./telegraf-receiver.md).
+The telegraf receiver plugin receiver, process and convert the metrics, then it send converted metrics to [Meter System](./../../concepts-and-designs/meter.md).
+VM entity as a `Service` in OAP and on the `Layer: OS_LINUX`.
+
 ## Data flow
+**For OpenTelemetry receiver:**
 1. The Prometheus node-exporter collects metrics data from the VMs.
 2. The OpenTelemetry Collector fetches metrics from node-exporter via Prometheus Receiver and pushes metrics to the SkyWalking OAP Server via the OpenCensus gRPC Exporter or OpenTelemetry gRPC exporter.
 3. The SkyWalking OAP Server parses the expression with [MAL](../../concepts-and-designs/mal.md) to filter/calculate/aggregate and store the results.
 
+**For Telegraf receiver:**
+1. The InfluxDB Telegraf [input plugins](https://docs.influxdata.com/telegraf/v1.24/plugins/) collects various metrics data from the VMs.
+2. The InfluxDB Telegraf send `JSON` format metrics by `HTTP` messages to Telegraf Receiver, then pushes converted metrics to the SkyWalking OAP Server [Meter System](./../../concepts-and-designs/meter.md).
+3. The SkyWalking OAP Server parses the expression with [MAL](../../concepts-and-designs/mal.md) to filter/calculate/aggregate and store the results.
 
 ## Setup
-
+**For OpenTelemetry receiver:**
 1. Setup [Prometheus node-exporter](https://prometheus.io/docs/guides/node-exporter/).
 2. Setup [OpenTelemetry Collector ](https://opentelemetry.io/docs/collector/). This is an example for OpenTelemetry Collector configuration [otel-collector-config.yaml](../../../../test/e2e-v2/cases/vm/prometheus-node-exporter/otel-collector-config.yaml).
 3. Config SkyWalking [OpenTelemetry receiver](opentelemetry-receiver.md).
 
+**For Telegraf receiver:**
+1. Setup InfluxDB Telegraf's `telegraf.conf file` according to [Telegraf office document](https://docs.influxdata.com/telegraf/v1.24/).
+2. Setup InfluxDB Telegraf's `telegraf.conf file` specific rules according to [Telegraf receiver document](telegraf-receiver.md).
+3. Config SkyWalking [Telegraf receiver](telegraf-receiver.md).
+
 ## Supported Metrics
+**For OpenTelemetry receiver:**

Review Comment:
   I just write the Data flow of OpenTelemetry receiver and Telegraf receiver. Actually, they share the metrics.



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