Kubernetes作业舱已成功完成,但其中一个容器未就绪

我有一些奇怪的行为。

当A job 如果已运行,则它将成功完成,但其中一个容器表示它尚未(或尚未)就绪:

NAMESPACE     NAME                                                 READY     STATUS      RESTARTS   AGE       IP           NODE
default       **********-migration-22-20-16-29-11-2018-xnffp       1/2       Completed   0          11h       10.4.5.8     gke-******

YAML工作:

apiVersion: batch/v1
kind: Job
metadata:
  name: migration-${timestamp_hhmmssddmmyy}
  labels:
    jobType: database-migration
spec:
  backoffLimit: 0
  template:
    spec:
      restartPolicy: Never
      containers:
      - name: app
        image: "${appApiImage}"
        imagePullPolicy: IfNotPresent
        command:
          - php
          - artisan
          - migrate
      - name: cloudsql-proxy
        image: gcr.io/cloudsql-docker/gce-proxy:1.11
        command: ["/cloud_sql_proxy",
                  "-instances=${SQL_INSTANCE_NAME}=tcp:3306",
                  "-credential_file=/secrets/cloudsql/credentials.json"]
        securityContext:
          runAsUser: 2  # non-root user
          allowPrivilegeEscalation: false
        volumeMounts:
          - name: cloudsql-instance-credentials
            mountPath: /secrets/cloudsql
            readOnly: true
      volumes:
        - name: cloudsql-instance-credentials
          secret:
            secretName: cloudsql-instance-credentials

这种行为的原因可能是什么?容器上没有定义就绪或活性探针。

如果我在吊舱上做了描述,相关信息是:

...
Command:
  php
  artisan
  migrate
State:          Terminated
  Reason:       Completed
  Exit Code:    0
  Started:      Thu, 29 Nov 2018 22:20:18 +0000
  Finished:     Thu, 29 Nov 2018 22:20:19 +0000
Ready:          False
Restart Count:  0
Requests:
  cpu:  100m
...