apiVersion: apps/v1
kind: Deployment
metadata:
  name: db
spec:
  replicas: 1
  revisionHistoryLimit: 3
  selector:
    matchLabels:
      app: db
  template:
    metadata:
      labels:
        app: db
    spec:
      volumes:
        - name: db
          persistentVolumeClaim:
            claimName: mysql-pv-claim
      containers:
        - name: db
          image: mariadb:10.7.1
          imagePullPolicy: Always
          tty: true
          resources:
            limits:
              memory: "512Mi"
              cpu: "500m"
          ports:
            - name: mariadb
              containerPort: 3306
          volumeMounts:
            - name: db
              mountPath: /var/lib/mysql

          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: database-secret
                  key: root-password
            - name: MYSQL_DATABASE
              valueFrom:
                configMapKeyRef:
                  name: db-config
                  key: name
            - name: MYSQL_USER
              valueFrom:
                secretKeyRef:
                  name: db-secret
                  key: username
            - name: MYSQL_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: db-secret
                  key: password