helm-模版中的List、loop、map使用方法

样例一、

values.yaml:

image:
  repository: nginx
  tag: 1.7.9
  pullPolicy: IfNotPresent
envs:
  - NET_NAME : "SZ_328"
  - NET_PORT : "5678"

templates/deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
          ...
          env:
        {{- range .Values.envs }}
           {{- range $key,$val := . }}  
            - name : {{ $key }}
              value : {{ $val }}
           {{- end}}
        {{- end}}

结果：

$ helm install --dry-run --debug . --tiller-namespace=default
...
# Source: test2/templates/deployment.yaml
apiVersion: extensions/v1beta1
...
          imagePullPolicy: IfNotPresent
          env:  
            - name : NET_NAME
              value : SZ_328  
            - name : NET_PORT
              value : 5678

样例二、

values.yaml:

image:
  repository: nginx
  tag: 1.7.9
  pullPolicy: IfNotPresent
envs:
  - name : NET_NAME 
    value : SZ_328
  - name : NET_PORT 
    value : 5678

templates/deployment.yaml：

apiVersion: extensions/v1beta1
kind: Deployment
          ...
          env:
        {{- range .Values.envs }}
           {{- with . }}  
            - name : {{ .name }}
              value : {{ .value }}
           {{- end}}
        {{- end}}

结果：

$ helm install --dry-run --debug . --tiller-namespace=default
...
# Source: test2/templates/deployment.yaml
apiVersion: extensions/v1beta1
...
          imagePullPolicy: IfNotPresent
          env:  
            - name : NET_NAME
              value : SZ_328  
            - name : NET_PORT
              value : 5678

样例二、

a:、map写法：

server:
  ##extraArgs: {}
  extraArgs:
    storage.local.checkpoint-dirty-series-limit: 5000
    query.max-concurrency: 20

- name: test
  image: busybox:latest
  args:
    - --web.console.templates=/etc/prometheus/consoles
  {{- range $key, $value := .Values.server.extraArgs }}
    - --{{ $key }}={{ $value }}
  {{- end }}

 

b: 数组写法：

server:
  #extraHostPathMounts: []
  extraHostPathMounts:
     - name: certs-dir-1
       mountPath: /etc/kubernetes/certs
       hostPath: /etc/kubernetes/certs
       readOnly: true
     - name: certs-dir-2
       mountPath: /etc-2/kubernetes/certs
       hostPath: /etc-2/kubernetes/certs
       readOnly: true

volumeMounts:
  {{- range .Values.server.extraHostPathMounts }}
    - name: {{ .name }}
      mountPath: {{ .mountPath }}
      readOnly: {{ .readOnly }}
  {{- end }}

volumes:
  {{- range .Values.server.extraHostPathMounts }}
    - name: {{ .name }}
      hostPath:
        path: {{ .hostPath }}
  {{- end }}

 

 

参考：https://docs.helm.sh/chart_template_guide/#values-files