Sample Yaml 2

yaml_3_containers.yaml

apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: {{ template "fullname" . }}
  namespace: "{{ .Values.namespace }}"
  labels:
    chart: "chartNameVersion"
spec:
  serviceName: {{ template "fullname" . }}
  replicas: {{ .Values.replicaCount }}
  template:
    metadata:
      labels:
        app: {{ template "fullname" . }}
    spec:
      containers:
      - name: Container 1
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        command: ["sh", "-c", "ls /opt/gsec; sleep 6000"]
#        imagePullPolicy: {{ .Values.image.pullPolicy }}
#        restartPolicy: Always
        resources:
#{{ toYaml .Values.resources | indent 12 }}
        env:
        - name: C1_env_name
          valueFrom:
            secretKeyRef:
              name: gsec
              key: RemoteUser
        volumeMounts:
        - name: C1_vol_name
          mountPath: "{{ .Values.storage.DataDirectory }}"
        - name: gsec
          readOnly: true
          mountPath: /opt/gsec
      - name: Container 2
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        command: ["sh", "-c", "ls /opt/gsec; sleep 6000"]
#        imagePullPolicy: {{ .Values.image.pullPolicy }}
#        restartPolicy: Always
        resources:
        - name: C2_resources_name
#{{ toYaml .Values.resources | indent 12 }}
        env:
        - name: C2_env_name
          valueFrom:
            secretKeyRef:
              name: gsec
              key: RemoteUser
        volumeMounts:
        - name: datadir
          mountPath: "{{ .Values.storage.DataDirectory }}"
        - name: gsec
          readOnly: true
          mountPath: /opt/gsec    
      - name: Container 3
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        command: ["sh", "-c", "ls /opt/gsec; sleep 6000"]
#        imagePullPolicy: {{ .Values.image.pullPolicy }}
#        restartPolicy: Always
        resources:
#{{ toYaml .Values.resources | indent 12 }}
        env:
        - name: C3_env_name
          valueFrom:
            secretKeyRef:
              name: gsec
              key: RemoteUser
        volumeMounts:
        - name: C3_vol_name
          mountPath: "{{ .Values.storage.DataDirectory }}"
        - name: gsec
          readOnly: true
          mountPath: /opt/gsec    
      volumes:
        - name: gsec
          secret:
            secretName: gsec
            
  volumeClaimTemplates:
  - metadata:
      name: datadir
      annotations:
        volume.beta.kubernetes.io/storage-class: "{{ .Values.storage.StorageClass }}"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: {{ .Values.storage.Size }}