mongo-statefulset.yaml

# For MongoDB, I created a StatefulSet, which differs from a Deployment. In a StatefulSet, pod/container data persists in a single storage location.
# We use AWS EBS to store this data. If a pod restarts or fails, it will be recreated using the data stored in EBS, ensuring no data loss. 
# StatefulSets are primarily designed for databases. In the volume mounts section, you can see that I mount `/data/db` to AWS EBS (gp2). 
# First, I created a StorageClass, then a VolumeClaim template. You need to apply the StorageClass file (`kind: StorageClass`) 
# using the `kubectl apply -f` command before applying the MongoDB StatefulSet.
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mongodb
  labels:
    app: mongodb
spec:
  serviceName: "mongodb"
  replicas: 1
  selector:
    matchLabels:
      app: mongodb
  template:
    metadata:
      labels:
        app: mongodb
    spec:
      containers:
      - name: mongodb
        image: mongo:7.0.12
        env:
        - name: MONGO_INITDB_ROOT_USERNAME
          value: "root"
        - name: MONGO_INITDB_ROOT_PASSWORD
          value: "example"
        - name: MONGO_INITDB_DATABASE
          value: Ecommerce 
        ports:
        - containerPort: 27017
        volumeMounts:
        - name: mongo-persistent-storage
          mountPath: /data/db
  volumeClaimTemplates:
  - metadata:
      name: mongo-persistent-storage
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: aws-ebs-gp2
      resources:
        requests:
          storage: 1Gi