• 【k8s】Container-startupProbe


    环境

    1. kubernetes 1.20.4
    2. Spring Boot 2.5.0-M3

    目标

    startupProbe 表示启动探针,和之前学习的两种探针字段一致。
    启动探针在成功之前,另外的探针不会启动。这个主要用于启动事件长且不固定的容器。
    在探测到成功之后,启动探针不会再进行探测了。

    示例

    Pod.yaml

    apiVersion: v1
    kind: Pod
    metadata:
      name: spring-k8s
    spec:
      containers:
        - name: spring-k8s
          image: jiangbo920827/spring-k8s:liveness
          startupProbe:
            httpGet:
              port: my-port
              path: /actuator/health/liveness
          ports:
            - name: my-port
              containerPort: 8080
    

    查看就绪探针日志

    Spring Boot 还没有启动探针的端点,将启动探针配置到存活探针的上面,看看效果。

    2021-03-27 08:10:26 - GET "/actuator/health/readiness", parameters={}
    2021-03-27 08:10:26 - Mapped to Actuator web endpoint 'health-path'
    2021-03-27 08:10:26 - Using 'application/vnd.spring-boot.actuator.v3+json', given [*/*] and supported [application/vnd.spring-boot.actuator.v3+json, application/vnd.spring-boot.actuator.v2+json, application/json]
    2021-03-27 08:10:26 - Writing [org.springframework.boot.actuate.health.CompositeHealth@6741996c]
    2021-03-27 08:10:26 - Completed 200 OK
    2021-03-27 08:10:36 - GET "/actuator/health/readiness", parameters={}
    2021-03-27 08:10:36 - Mapped to Actuator web endpoint 'health-path'
    2021-03-27 08:10:36 - Using 'application/vnd.spring-boot.actuator.v3+json', given [*/*] and supported [application/vnd.spring-boot.actuator.v3+json, application/vnd.spring-boot.actuator.v2+json, application/json]
    2021-03-27 08:10:36 - Writing [org.springframework.boot.actuate.health.CompositeHealth@2c86cb07]
    2021-03-27 08:10:36 - Completed 200 OK
    

    总结

    如果服务的启动时间很长,可以单独配置启动探针。

    附录

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  • 原文地址:https://www.cnblogs.com/jiangbo44/p/14586239.html
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