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Posted to commits@druid.apache.org by vi...@apache.org on 2022/10/17 18:56:07 UTC
[druid] branch master updated: Collocated processes instructions (#13224)
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victoria pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/druid.git
The following commit(s) were added to refs/heads/master by this push:
new cc10350870 Collocated processes instructions (#13224)
cc10350870 is described below
commit cc10350870dbe22f74aef0bb500c6e7894b916dd
Author: cristian-popa <cr...@users.noreply.github.com>
AuthorDate: Mon Oct 17 13:56:00 2022 -0500
Collocated processes instructions (#13224)
Co-authored-by: Victoria Lim <vt...@users.noreply.github.com>
Co-authored-by: Frank Chen <fr...@apache.org>
---
docs/development/extensions-contrib/prometheus.md | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/docs/development/extensions-contrib/prometheus.md b/docs/development/extensions-contrib/prometheus.md
index 7957cbf7e4..e5625f160b 100644
--- a/docs/development/extensions-contrib/prometheus.md
+++ b/docs/development/extensions-contrib/prometheus.md
@@ -29,7 +29,8 @@ To use this Apache Druid extension, [include](../../development/extensions.md#lo
This extension exposes [Druid metrics](https://druid.apache.org/docs/latest/operations/metrics.html) for collection by a Prometheus server (https://prometheus.io/).
-Emitter is enabled by setting `druid.emitter=prometheus` [configs](https://druid.apache.org/docs/latest/configuration/index.html#emitting-metrics) or include `prometheus` in the composing emitter list.
+Emitter is enabled by setting `druid.emitter=prometheus` [configs](https://druid.apache.org/docs/latest/configuration/index.html#enabling-metrics) or include `prometheus` in the composing emitter list.
+
## Configuration
@@ -46,6 +47,10 @@ All the configuration parameters for the Prometheus emitter are under `druid.emi
| `druid.emitter.prometheus.pushGatewayAddress` | Pushgateway address. Required if using `pushgateway` strategy. | no | none |
|`druid.emitter.prometheus.flushPeriod`|Emit metrics to Pushgateway every `flushPeriod` seconds. Required if `pushgateway` strategy is used.|no|15|
+### Ports for colocated Druid processes
+
+In certain instances, Druid processes may be colocated on the same host. For example, the Broker and Router may share the same server. Other colocated processes include the Historical and MiddleManager or the Coordinator and Overlord. When you have colocated processes, specify `druid.emitter.prometheus.port` separately for each process on each host. For example, even if the Broker and Router share the same host, the Broker runtime properties and the Router runtime properties each need to [...]
+
### Override properties for Peon Tasks
Peon tasks are created dynamically by middle managers and have dynamic host and port addresses. Since the `exporter` strategy allows Prometheus to read only from a fixed address, it cannot be used for peon tasks.
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