Spring学习(十八)——SpringBoot健康检测

依赖

    
    <dependency>
      <groupId>org.springframework.bootgroupId>
      <artifactId>spring-boot-starter-actuatorartifactId>
    dependency>

health配置

如果还想查看info、metrics等状态，可以将include: "health" 改为include: "*"

#健康检测
management:
  endpoints:
    web:
      exposure:
        include: "health"
      #允许跨域访问
      cors:
        allowed-origins: "*"
        allowed-methods: "*"
  endpoint:
    health:
      show-details: always

访问

http://localhost:8888/actuator/health

结果

{
	"status":"UP",
	"components":{
	    "db":{
			"status":"UP",
			"details":{
				"database":"MySQL",
				"validationQuery":"isValid()"
			}
		},
		"diskSpace":{
			"status":"UP",
			"details":{
				"total":200000000000,
				"free":100000000000,
				"threshold":10485760,
				"exists":true
			}
		},
		"ping":{
			"status":"UP"
		},
		"redis":{
			"status":"UP",
			"details":{
				"version":"5.0.5"
			}
		}
	}
}

metrics配置

include中添加metrics

#健康检测
management:
  endpoints:
    web:
      exposure:
        include: "health, metrics"
      #允许跨域访问
      cors:
        allowed-origins: "*"
        allowed-methods: "*"
  endpoint:
    health:
      show-details: always

访问

http://localhost:8888/actuator/metrics

结果

{"names":["http.server.requests","jvm.buffer.count","jvm.buffer.memory.used","jvm.buffer.total.capacity","jvm.classes.loaded","jvm.classes.unloaded","jvm.gc.live.data.size","jvm.gc.max.data.size","jvm.gc.memory.allocated","jvm.gc.memory.promoted","jvm.gc.pause","jvm.memory.committed","jvm.memory.max","jvm.memory.used","jvm.threads.daemon","jvm.threads.live","jvm.threads.peak","jvm.threads.states","logback.events","process.cpu.usage","process.start.time","process.uptime","system.cpu.count","system.cpu.usage","tomcat.sessions.active.current","tomcat.sessions.active.max","tomcat.sessions.alive.max","tomcat.sessions.created","tomcat.sessions.expired","tomcat.sessions.rejected"]}

想要获取详细的数据，还需要进一步访问：

http://localhost:8888/actuator/metrics/process.uptime

结果：

{"name":"process.uptime","description":"The uptime of the Java virtual machine","baseUnit":"seconds","measurements":[{"statistic":"VALUE","value":423.091}],"availableTags":[]}

info配置

#健康检测
management:
  endpoints:
    web:
      exposure:
        include: "health, metrics, info"
        #允许跨域访问
      cors:
        allowed-origins: "*"
        allowed-methods: "*"
  endpoint:
    health:
      show-details: always
info:
  app:
    name: @project.name@
    description: @project.description@
    version: @project.version@
    encoding: @project.build.sourceEncoding@
    java:
      version: @java.version@

访问

http://localhost:8888/actuator/info

结果

{
	"app":{
		"name":"test",
		"description":"Parent pom providing dependency and plugin management for applications built with Maven",
		"version":"1.0.0",
		"encoding":"UTF-8",
		"java":{
			"version":"1.8.0_241"
		}
	}
}