在 Spring Boot 3.x 中使用 Prometheus 时，某些 Tomcat 指标不可见

Question

• Spring Boot 版本：

  3.3.2

• 依赖性

  • io.micrometer:micrometer-core

    （最新）

  • io.micrometer:micrometer-registry-prometheus

    （最新）

某些 Tomcat 指标不可见。 输出的指标。

• tomcat.sessions.active.current
• tomcat.sessions.active.max
• tomcat.sessions.alive.max
• tomcat.sessions.created
• tomcat.sessions.expired
• tomcat.sessions.rejected

未打印的指标

• tomcat.global.request.max
• tomcat.global.request.count
• tomcat.threads.config.max
• tomcat.threads.current
• tomcat.threads.busy
• tomcat.connections.max
• tomcat.connections.current
• tomcat.connections.keepalive.current
• tomcat.servlet.request.max
• tomcat.servlet.request.count
• tomcat.servlet.request.total-time

这是application.yaml

spring:
  application:
    name: myapplicationname
management:
  server:
    port: 9123
  endpoints:
    web:
      exposure:
        include: "*"
      base-path: /actuator
  endpoint:
    metrics:
      enabled: true
    health:
      enabled: true
      probes:
        enabled: true
  health:
    livenessstate:
      enabled: true
    readinessstate:
      enabled: true
  metrics:
    enable:
      tomcat: true
    tags:
      application: 'myapplicationnameee'
    distribution:
      percentiles-histogram:
        tomcat:
          request: true
        reactor:
          onNext:
            delay: true
    export:
      prometheus:
        pushgateway:
          enabled: true
          push-rate: 1s
server:
  port: 98765
  shutdown: graceful

Answer 1

这些指标是从 Tomcat MBean 读取的。使用 server.tomcat.mbeanregistry.enabled=true 属性