Spring Boot 2 Actuator doesnt publish jvm metric

Question

I am running a Spring Boot 2 Application and added the actuator spring boot starter dependency. I enabled all web endpoints and then called:

http://localhost:8080/actuator/metrics

result is:

{
    "names": ["jdbc.connections.active", 
              "jdbc.connections.max", 
              "jdbc.connections.min", 
              "hikaricp.connections.idle", 
              "hikaricp.connections.pending", 
              "hikaricp.connections", 
              "hikaricp.connections.active", 
              "hikaricp.connections.creation", 
              "hikaricp.connections.max", 
              "hikaricp.connections.min", 
              "hikaricp.connections.usage", 
              "hikaricp.connections.timeout", 
              "hikaricp.connections.acquire"]
}

But I am missing all the JVM stats and other built-in metrics. What am I missing here? Everything I read said that these metrics should be available at all times.

Thanks for any hints.

Answer 1

I want to share the findings with you. The problem was that a 3rd party library (Shiro) and my configuration for it. The bean loading of micrometer got mixed up which resulted in a too late initialisation of a needed PostProcessingBean which configures the MicroMeterRegistry (in my case the PrometheusMeterRegistry).

I dont know if its wise to do the configuration of the Registries via a different Bean (PostProcessor) which can lead to situations i had... the Registries should configure themselves without relying on other Beans which might get constructed too late.