Internet-Engineering-Backend/loghme-db.yaml at master · codamin/Internet-Engineering-Backend · GitHub

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apiVersion: v1
kind: PersistentVolumeClaim        # Create a PersistentVolumeClaim to request a PersistentVolume storage
metadata:                          # Claim name and labels
  name: mysql-pv-claim
  labels:
    app: loghme-mysql
spec:                              # Access mode and resource limits
  storageClassName: manual       # Request a certain storage class
  accessModes:
    - ReadWriteOnce                # ReadWriteOnce means the volume can be mounted as read-write by a single Node
  resources:
    requests:
      storage: 250Mi
---
apiVersion: v1                    # API version
kind: Service                     # Type of kubernetes resource
metadata:
  name: loghme-mysql         # Name of the resource
  labels:                         # Labels that will be applied to the resource
    app: loghme-mysql
spec:
  ports:
    - port: 3306
  selector:                       # Selects any Pod with labels `app=polling-app,tier=mysql`
    app: loghme-mysql
    tier: mysql
---
apiVersion: apps/v1
kind: Deployment                    # Type of the kubernetes resource
metadata:
  name: loghme-mysql           # Name of the deployment
  labels:                           # Labels applied to this deployment
    app: loghme-mysql
spec:
  selector:
    matchLabels:                    # This deployment applies to the Pods matching the specified labels
      app: loghme-mysql
      tier: mysql
  strategy:
    type: Recreate
  template:                         # Template for the Pods in this deployment
    metadata:
      labels:                       # Labels to be applied to the Pods in this deployment
        app: loghme-mysql
        tier: mysql
    spec:                           # The spec for the containers that will be run inside the Pods in this deployment
      containers:
      - image: mysql            # The container image
        name: mysql
        env:                        # Environment variables passed to the container
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:                # Read environment variables from kubernetes secrets
            secretKeyRef:
              name: mysql-root-pass
              key: password
        - name: MYSQL_DATABASE
          valueFrom:
            secretKeyRef:
              name: mysql-db-url
              key: database
        ports:
        - containerPort: 3306        # The port that the container exposes
          name: mysql
        resources:
          limits:
            cpu: 0.4
            memory: "400Mi"
        volumeMounts:
        - name: mysql-persistent-storage  # This name should match the name specified in `volumes.name`
          mountPath: /var/lib/mysql
      volumes:                       # A PersistentVolume is mounted as a volume to the Pod
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pv-claim