Actuator

Actuator

引入依赖spring-boot-starter-actuator，通过endpoint来暴露HTTP或JMX来监管应用
通过http://localhost:8080/actuator，可以查看所有endpoints，eg：

/actuator/health, /actuator/info, /actuator/metrics, /actuator/loggers

/health：健康指数检查

通过management.endpoint.health.show-details=always可以显示详细的健康信息。
实现HealthIndicator接口，或继承AbstractHealthIndicator类自定义健康指标

@Component
public class CustomerHealthIndicator extends AbstractHealthIndicator {
    @Override
    protected void doHealthCheck(Health.Builder builder) throws Exception {
        builder.up().withDetail("xxx", "xxx xxx");
    }
}

/info：应用基本信息

通过META-INF/build-info.properties获得编译信息，通过git.properties获得git信息

# INFO ENDPOINT CONFIGURATION
info:
  app:
    name: @project.name@
    description: @project.description@
    version: @project.version@
    encoding: @project.build.sourceEncoding@
    java:
      version: @java.version@

Automatic Property Expansion：扩展maven工程的properties

授权访问

通过HTTP认证保护Actuator Endpoints的安全：spring-boot-starter-security

Micrometer

示例学习：Spring Boot Metrics监控之Prometheus&Grafana