How to monitor custom SpringBoot app metrics using PCF Metrics 1.6?

Enable Metric Registrar in Ops Manager > PAS > Settings > Metrics Registrar

Refer: Configure PAS - Metric Registrar

Note other configurabled fields:

Endpoint scraping interval min: 15, max: 600 = 35
Blocked tags: deployment,job,index,id I removed id from blocked tags, reason discussed later below.

Changes required in SpringBoot app are
- pom.xml

Assuming actuator is enabled already, include micrometer prometheus endpoints

<!-- Micrometer Prometheus registry -->
<dependency>
  <groupId>io.micrometer</groupId>
  <artifactId>micrometer-registry-prometheus</artifactId>
</dependency>

application.yml

Change required to expose prometheus end point

management:
  endpoints:
    web:
      exposure:
        include: "prometheus,health"

Refer: Register endpoint

Need to disable security for actuator endpoints ApplicationSecurity.java
Build and run locally then you should see prometheus endpoint
- http://localhost:8080/actuator
- http://localhost:8080/actuator/prometheus
push the app to Pivotal platform (PAS)

Next > Customize PCF Metrics 1.6x

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