yurake/k8s-3tier-webapp

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mongodb
spec:
  selector:
    matchLabels:
      app: mongodb
  replicas: 1
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        tier: backend
        component: database
        app: mongodb
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9216"
    spec:
      containers:
        - name: mongodb
          image: yurak/mongodb:latest
          imagePullPolicy: Always
          ports:
            - name: mongodb
              containerPort: 27017
          env:
            - name: MONGO_INITDB_ROOT_USERNAME
              valueFrom:
                configMapKeyRef:
                  name: mongodb-configmap
                  key: mongodb-root-user
            - name: MONGO_INITDB_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mongodb-secret
                  key: mongodb-root-password
            - name: TZ
              valueFrom:
                configMapKeyRef:
                  name: mongodb-configmap
                  key: tz
            - name: MONGO_INITDB_DATABASE
              valueFrom:
                configMapKeyRef:
                  name: mongodb-configmap
                  key: mongodb-initdb
          volumeMounts:
            - name: mongodb-persistent-storage
              mountPath: /data/db
          livenessProbe:
            tcpSocket:
              port: 27017
          readinessProbe:
            exec:
              command:
                - mongo
                - --eval
                - db.adminCommand('ping')
        - name: mongodb-exporter
          image: ssheehy/mongodb-exporter:0.11.0
          ports:
            - containerPort: 9216
          env:
            - name: MONGODB_URI
              valueFrom:
                secretKeyRef:
                  name: mongodb-secret
                  key: mongodb-exporter-uri
          livenessProbe:
            tcpSocket:
              port: 9216
          readinessProbe:
            tcpSocket:
              port: 9216
      volumes:
        - name: mongodb-persistent-storage
          persistentVolumeClaim:
            claimName: mongodb-pvc