kubernetes 部署 Pod 和 python 文件启动

Question

apiVersion: v1
kind: Pod
metadata:
  name: test
  labels:
    app: test-pod
spec:
  containers:
  - name: testserver
    image: test_server:2.5
    ports:
      - containerPort: 8080
      - containerPort: 5100
    env:
      - name: POD_NAME
        valueFrom:
          fieldRef:
            fieldPath: metadata.name
    volumeMounts:
      - name: testserver
        mountPath: /app/test/csv
#    command: ["/bin/bash"]
#    args: ["-c", "python /app/api/Python_Rest.py"]

  - name: testdb
    image: lev_test_db:1.4
    ports:
      - containerPort: 1433
    env:
      - name: POD_NAME
        valueFrom:
          fieldRef:
            fieldPath: metadata.name
    volumeMounts:
      - name: testdb
        mountPath: /var/opt/mssql/data

  volumes:
  - name: testserver
    hostPath:
      path: /usr/testhostpath/testserver
  - name: levmldb
    hostPath:
      path: /usr/testhostpath/testdb

如果按照我注释掉的方式去做，tomcat就不能正常工作，因为在tomcat成功之前python服务器就在运行。

在kubernetes环境下使用yaml文件部署tomcat conatiner，如果tomcat正常成功，我想运行python文件。我该怎么办？

Answer 1

可以使用sleep命令延迟testserver启动 一个更花哨的解决方案可以

command:
  - "sleep"
  - "100"
lifecycle:
  postStart:
    exec:
      command: 
        - "sh"
        - "-c"
        - |
          python /app/api/Python_Rest.py