Conductor server metrics how/help + prometheus

[eins]

Hello guys
I read a few tickets about conductor server and prometheus metrics

#600
#1769

And the conductor documentation
https://netflix.github.io/conductor/metrics/server/

But I can't understand how to enable spectator in conductor server and
then push metrics to a external prometheus server.

https://netflix.github.io/conductor/metrics/server/#publishing-metrics

Conductor uses spectator to collect the metrics.

• To enable conductor serve to publish metrics, add this dependency to
  your build.gradle.

  is build.grade, server/build.gradle ?

  I followed the link and I tried to add

    // metrics -- this line didn't work
   compile "com.netflix.spectator:spectator-reg-metrics3:0.89.0"
  

  or https://github.com/brharrington/spectator-examples/blob/master/metrics3/build.gradle

  I had errors

  A problem occurred configuring project ':conductor-server'.

  Could not resolve all dependencies for configuration ':conductor-server:runtimeCopy'.
  Could not find com.netflix.spectator:spectator-reg-metrics3:0.89.0.

  OR

  Could not get unknown property 'version_guice' for object of type
  org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

• Conductor Server enables you to load additional modules dynamically,
  this feature can be controlled using this configuration.

  I added to docker/server/config/config.properties

  # Additional modules for metrics collection (optional)
  conductor.additional.modules=com.netflix.conductor.contribs.metrics.MetricsRegistryModule,com.netflix.conductor.contribs.metrics.LoggingMetricsModule
  com.netflix.conductor.contribs.metrics.LoggingMetricsModule.reportPeriodSeconds=15
  

• Create your own AbstractModule that overides configure function and
  registers the Spectator metrics registry.

• Initialize the Registry and add it to the global registry via
  ((CompositeRegistry)Spectator.globalRegistry()).add(...).

the last two option I don't know where I need to add it.

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[marcocrasso]

@eins today I faced the same problem and a Web search brings me here. In case you still want to achieve this, I'd suggest to:

for development purposes:

in server/build.gradle file add:

implementation 'org.springframework.boot:spring-boot-starter-actuator'

in server/src/main/resources/application.properties add:

conductor.metrics-prometheus.enabled=true
management.endpoints.web.exposure.include=prometheus,health,info,metrics

** EDITED **
in java/com/netflix/conductor/contribs/metrics/PrometheusMetricsConfiguration.java

Remove the instantiation of Prometheus registry, and let Spring inject the actuator one:

public PrometheusMetricsConfiguration(MeterRegistry meterRegistry) {
    LOGGER.info("Prometheus metrics module initialized");

    final MicrometerRegistry metricsRegistry = new MicrometerRegistry(meterRegistry);

then hit at root:

./gradlew server

visit: http://localhost:8080/actuator and follow the links.

for PRD

For production, build a docker image with the change in server/build.gradle and then configure your container as showed.

[marcocrasso]

By the way, the source I consulted:

1. Sections 1 and 2 (only the first two sentences) of : https://micrometer.io/docs/registry/prometheus#_installing
2. https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html#production-ready-endpoints-exposing-endpoints

[eins]

@marcocrasso thanks for the reply on this ticket. We moved to camundabpm . conductor was to green .

[yashwant-mv]

@marcocrasso anyway we can achieve this using configs and using docker images?