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  • 【Kubernetes】激活生产配置-env

    环境

    1. kubernetes 1.20.4
    2. Spring Boot 2.5.0-M2

    目标

    通过前面的【Kubernetes】Spring Boot 开发与生产配置分离生成了一个开发与生产配置分离的 Spring Boot 项目,通过 env 的方式来激活生产配置。

    激活生产配置

    Pod.yaml

    apiVersion: v1
    kind: Pod
    metadata:
      name: spring-k8s
    spec:
      containers:
        - name: spring-k8s
          image: jiangbo920827/spring-k8s:product
          env:
            - name: SPRING_PROFILES_ACTIVE
              value: product
          resources:
            limits:
              memory: 128Mi
              cpu: 500m
          ports:
            - containerPort: 8080
    

    查看详情

    [root@master kubernetes]# kubectl describe pod spring-k8s
    Name:         spring-k8s
    Namespace:    default
    Priority:     0
    Node:         node1/192.168.56.102
    Start Time:   Sun, 21 Mar 2021 23:50:00 +0800
    Labels:       <none>
    Annotations:  <none>
    Status:       Running
    IP:           10.244.1.149
    IPs:
      IP:  10.244.1.149
    Containers:
      spring-k8s:
        Container ID:   docker://ebc57e6cf4c5eb6d34c313d7baed6869c5fa231b111b9a2ea43e33929095d93b
        Image:          jiangbo920827/spring-k8s:product
        Image ID:       docker-pullable://jiangbo920827/spring-k8s@sha256:da4235afda51eb06b8f7cf0b1fe3880d5b3d85843c13eade672a75112aed9428
        Port:           8080/TCP
        Host Port:      0/TCP
        State:          Running
          Started:      Sun, 21 Mar 2021 23:50:02 +0800
        Ready:          True
        Restart Count:  0
        Limits:
          cpu:     500m
          memory:  128Mi
        Requests:
          cpu:     500m
          memory:  128Mi
        Environment:
          SPRING_PROFILES_ACTIVE:  product
        Mounts:
          /var/run/secrets/kubernetes.io/serviceaccount from default-token-slbq5 (ro)
    Conditions:
      Type              Status
      Initialized       True
      Ready             True
      ContainersReady   True
      PodScheduled      True
    Volumes:
      default-token-slbq5:
        Type:        Secret (a volume populated by a Secret)
        SecretName:  default-token-slbq5
        Optional:    false
    QoS Class:       Guaranteed
    Node-Selectors:  <none>
    Tolerations:     node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                     node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
    Events:
      Type    Reason     Age   From               Message
      ----    ------     ----  ----               -------
      Normal  Scheduled  112s  default-scheduler  Successfully assigned default/spring-k8s to node1
      Normal  Pulled     112s  kubelet            Container image "jiangbo920827/spring-k8s:product" already present on machine
      Normal  Created    112s  kubelet            Created container spring-k8s
      Normal  Started    111s  kubelet            Started container spring-k8s
    [root@master kubernetes]#
    

    查看日志

    [root@master kubernetes]# kubectl logs -f spring-k8s
    
      .   ____          _            __ _ _
     /\ / ___'_ __ _ _(_)_ __  __ _    
    ( ( )\___ | '_ | '_| | '_ / _` |    
     \/  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::             (v2.5.0-M2)
    
    2021-03-21 15:50:05.396  INFO 1 --- [           main] j.spring.docker.SpringDemoApplication    : Starting SpringDemoApplication vsvc using Java 1.8.0_212 on spring-k8s with PID 1 (/BOOT-INF/classes started by root in /)
    2021-03-21 15:50:05.398  INFO 1 --- [           main] j.spring.docker.SpringDemoApplication    : The following profiles are active: product
    2021-03-21 15:50:11.802  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
    2021-03-21 15:50:11.892  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
    2021-03-21 15:50:11.892  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.43]
    2021-03-21 15:50:12.107  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
    2021-03-21 15:50:12.108  INFO 1 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 6490 ms
    2021-03-21 15:50:15.617  INFO 1 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
    2021-03-21 15:50:17.408  INFO 1 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 14 endpoint(s) beneath base path '/actuator'
    2021-03-21 15:50:17.799  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
    2021-03-21 15:50:17.822  INFO 1 --- [           main] j.spring.docker.SpringDemoApplication    : Started SpringDemoApplication in 14.418 seconds (JVM running for 15.799)
    

    访问测试

    [root@master kubernetes]# curl 10.244.1.149:8080/users|jq
      % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                     Dload  Upload   Total   Spent    Left  Speed
    100    29    0    29    0     0     23      0 --:--:--  0:00:01 --:--:--    23
    [
      {
        "name": "jiangbo",
        "age": 44
      }
    ]
    

    总结

    新建了一个 Spring Boot 项目,使用 env 来激活生产配置信息。

    附录

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  • 原文地址:https://www.cnblogs.com/jiangbo44/p/14564482.html
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