使用Helm

Question

我正在尝试在带舵图的部署中使用configmap。现在似乎可以根据此处的文档使用Helm访问文件：https://github.com/helm/helm/blob/master/docs/chart_template_guide/accessing_files.md

这是我的部署：

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: "{{ template "service.fullname" . }}"
  labels:        
    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
spec:
  replicas: {{ .Values.replicaCount }}
  template:
    metadata:
      labels:
        app: "{{ template "service.fullname" . }}"
    spec:
      containers:
      - name: "{{ .Chart.Name }}"
        image: "{{ .Values.registryHost }}/{{ .Values.userNamespace }}/{{ .Values.projectName }}/{{ .Values.serviceName }}:{{.Chart.Version}}"
        volumeMounts:
        - name: {{ .Values.configmapName}}configmap-volume
          mountPath: /app/config
        ports:
        - containerPort: 80
          name: http            
        livenessProbe:
          httpGet:
            path: /health
            port: http
          initialDelaySeconds: 10
          timeoutSeconds: 5
        readinessProbe:
          httpGet:
            path: /health
            port: http
          initialDelaySeconds: 10
          timeoutSeconds: 5            
      volumes:
        - name: {{ .Values.configmapName}}configmap-volume
          configMap:            
            name: "{{ .Values.configmapName}}-configmap"

我的configmap正在访问配置文件。这是配置图：

apiVersion: v1
kind: ConfigMap
metadata:
  name: "{{ .Values.configmapName}}-configmap"
  labels:
    app: "{{ .Values.configmapName}}"
data:
  {{ .Files.Get "files/{{ .Values.configmapName}}-config.json" | indent 2}}

海图目录如下：

files/
--runtime-config.json
templates/
--configmap.yaml
--deployment.yaml
--ingress.yaml
--service.yaml
chart.value
vaues.yaml

这是我的runtime-confi.json文件的样子：

{
    "GameModeConfiguration": {
        "commandline": "campaign",
        "gameModeId": 10,
        "gameSessionId": 11,
        "worldId": 12,
        "minTeamSize": 13,
        "maxTeamSize": 20,
        "numberOfTeams": 4
    }
}

问题是，当我安装图表（即使使用空运行模式）时，我的configmap的数据为空。它不会将配置文件中的数据添加到我的configmap声明中。这是我进行空试时的样子：

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: "runtime-configmap"
  labels:
    app: "runtime"
data:
---

kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: "whimsical-otter-runtime-service"
  labels:        
    chart: "runtime-service-unknown/version"
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: "whimsical-otter-runtime-service"
    spec:
      containers:
      - name: "runtime-service"
        image: "gcr.io/xxx-dev/xxx/runtime_service:unknown/version"
        volumeMounts:
        - name: runtimeconfigmap-volume
          mountPath: /app/config
        ports:
        - containerPort: 80
          name: http
        resources:
          limits:
            cpu: 100m
            memory: 100Mi
          requests:
            cpu: 100m
            memory: 100Mi

        livenessProbe:
          httpGet:
            path: /health
            port: http
          initialDelaySeconds: 10
          timeoutSeconds: 5
        readinessProbe:
          httpGet:
            path: /health
            port: http
          initialDelaySeconds: 10
          timeoutSeconds: 5

      volumes:
        - name: runtimeconfigmap-volume
          configMap:            
            name: "runtime-configmap"
---

我没有数据怎么办？

Answer 1

替换字符串中的变量不起作用：

{{ .Files.Get "files/{{ .Values.configmapName}}-config.json" | indent 2}}

但是您可以像这样使用printf函数来为字符串加geren：

{{ .Files.Get (printf "files/%s-config.json" .Values.configmapName) | indent 2 }}

Answer 2

除了@adebasi指出的语法问题外，您仍然需要在密钥内设置此代码以获取有效的configmap yaml：

apiVersion: v1
kind: ConfigMap
metadata:
  name: "{{ .Values.configmapName}}-configmap"
  labels:
    app: "{{ .Values.configmapName}}"
data:
  my-file: |
    {{ .Files.Get (printf "files/%s-config.json" .Values.configmapName) | indent 4}}

或者您可以使用方便的configmap帮助程序：

apiVersion: v1
kind: ConfigMap
metadata:
  name: "{{ .Values.configmapName}}-configmap"
  labels:
    app: "{{ .Values.configmapName}}"
data:
{{ (.Files.Glob "files/*").AsConfig | indent 2 }}