coderprabhu-mongo-statefulset.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mongo
spec:
  serviceName: "mongo"
  replicas: 1
  selector:
    matchLabels:
      role: mongo
  template:
    metadata:
      labels:
        role: mongo
        environment: prod
    spec:
      terminationGracePeriodSeconds: 10
      containers:
        - name: mongo
          image: mongo
          command:
            - mongod
            - "--replSet"
            - rs0
#            - "--smallfiles" not supported in mongo 4.2 and above
#            - "--noprealloc"
# https://github.com/thesandlord/mongo-k8s-sidecar/pull/3/files
            - "--bind_ip_all"
#            - "--bind_ip"
#            - "0.0.0.0"
          ports:
            - containerPort: 27017
          volumeMounts:
            - name: mongo-persistent-storage
              mountPath: /data/db
          resources:
            requests:
              cpu: "0.01"
              memory: "50Mi"
            limits:
              cpu: "0.2"  
              memory: "140Mi"               
        - name: mongo-sidecar
          image: cvallance/mongo-k8s-sidecar
          env:
            - name: MONGO_SIDECAR_POD_LABELS
              value: "role=mongo,environment=prod"
          resources:
            requests:
              cpu: "0.01"
              memory: "24Mi"
            limits:
              cpu: "0.2"  
              memory: "100Mi" 
  volumeClaimTemplates:
  - metadata:
      name: mongo-persistent-storage
      annotations:
        volume.beta.kubernetes.io/storage-class: "coderprabhu-storage-class-hdd"
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 1Gi