Helm - 如何使用 ConfigMap 在卷中写入文件？

Question

我定义了 values.yaml 如下：

name: custom-streams
image: streams-docker-images
imagePullPolicy: Always
restartPolicy: Always
replicas: 1
port: 8080
nodeSelector:
  nodetype: free
configHocon: |-
  streams {
          monitoring {
            custom {
              uri = ${?URI}
              method = ${?METHOD}
            }
          }
  }

并且 configmap.yaml 如下所示：

apiVersion: v1
kind: ConfigMap
metadata:
  name: custom-streams-configmap
data:
  config.hocon: {{ .Values.configHocon | indent 4}}

最后，我定义了 deployment.yaml 如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Values.name }}
spec:
  replicas: {{ default 1 .Values.replicas }}
  strategy: {}
  template:
    spec:
      containers:
      - env:
        {{- range $key, $value := .Values.env }}
        - name: {{ $key }}
          value: {{ $value | quote }}
        {{- end }}
        image: {{ .Values.image }}
        name: {{ .Values.name }}
        volumeMounts:
        - name: config-hocon
          mountPath: /config
        ports:
        - containerPort: {{ .Values.port }}
      restartPolicy: {{ .Values.restartPolicy }}
      volumes:
      - name: config-hocon
        configmap:
          name: custom-streams-configmap
          items:
          - key: config.hocon
            path: config.hocon
status: {}

当我运行容器通过：

helm install --name custom-streams custom-streams -f values.yaml --debug --namespace streaming

然后 pods 运行没问题，但我在容器中看不到 config.hocon 文件：

$ kubectl exec -it custom-streams-55b45b7756-fb292 sh -n streaming
/ # ls
...
config
...
/ # cd config/
/config # ls
/config #

我需要写在/config文件夹里的config.hocon。谁能告诉我配置有什么问题吗？

Answer 1

我能够解决问题。问题是在 deployment.yaml:

中使用 configmap 代替 configMap

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Values.name }}
spec:
  replicas: {{ default 1 .Values.replicas }}
  strategy: {}
  template:
    spec:
      containers:
      - env:
        {{- range $key, $value := .Values.env }}
        - name: {{ $key }}
          value: {{ $value | quote }}
        {{- end }}
        image: {{ .Values.image }}
        name: {{ .Values.name }}
        volumeMounts:
        - name: config-hocon
          mountPath: /config
        ports:
        - containerPort: {{ .Values.port }}
      restartPolicy: {{ .Values.restartPolicy }}
      volumes:
      - name: config-hocon
        configMap:
          name: custom-streams-configmap
          items:
          - key: config.hocon
            path: config.hocon
status: {}

Helm - 如何使用 ConfigMap 在卷中写入文件？

Helm - How to write a file in a Volume using ConfigMap?

kubernetes

kubernetes-helm

configmap