kubernetes - 我们可以为不同的卷安装使用相同的 Configmap 吗？

Question

两个 pod 正在运行并且具有不同的卷挂载，但是需要在 2 个正在运行的 pod 中使用相同的 configmap。

Answer 1

你当然可以这样做。您可以将其安装ConfigMap到不同的卷中。您可以查看configure-pod-configmap。

说，你ConfigMap是这样的：

apiVersion: v1
kind: ConfigMap
metadata:
  name: special-config
  namespace: default
data:
  SPECIAL_LEVEL: very
  SPECIAL_TYPE: charm

还有两个豆荚：

apiVersion: v1
kind: Pod
metadata:
  name: dapi-test-pod-01
spec:
  containers:
    - name: test-container
      image: busybox
      command: [ "/bin/sh", "-c", "ls /etc/config/" ]
      volumeMounts:
      - name: config-volume
        mountPath: /etc/config
  volumes:
    - name: config-volume
      configMap:
        # Provide the name of the ConfigMap containing the files you want
        # to add to the container
        name: special-config
  restartPolicy: Never
---
apiVersion: v1
kind: Pod
metadata:
  name: dapi-test-pod-02
spec:
  containers:
    - name: test-container
      image: busybox
      command: [ "/bin/sh", "-c", "ls /etc/config/" ]
      volumeMounts:
      - name: config-volume
        mountPath: /etc/config
  volumes:
    - name: config-volume
      configMap:
        # Provide the name of the ConfigMap containing the files you want
        # to add to the container
        name: special-config
  restartPolicy: Never

现在查看创建上述ConfigMap和两个后的日志Pods：

# for 1st Pod
$ kubectl logs -f dapi-test-pod-01
SPECIAL_LEVEL
SPECIAL_TYPE

# for 2nd Pod
$ kubectl logs -f dapi-test-pod-02
SPECIAL_LEVEL
SPECIAL_TYPE