apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mariadb
spec:
  selector:
    matchLabels:
      app: mariadb
  serviceName: mariadb
  template:
    metadata:
      labels:
        app: mariadb
    spec:
      containers:
        - name: mariadb
          image: mariadb:10.5.2
          env:
            - name: MYSQL_DATABASE
              valueFrom:
                secretKeyRef:
                  name: mariadb-credentials-secret
                  key: database
            - name: MYSQL_USER
              valueFrom:
                secretKeyRef:
                  name: mariadb-credentials-secret
                  key: username
            - name: MYSQL_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-credentials-secret
                  key: password
            - name: MYSQL_RANDOM_ROOT_PASSWORD
              value: "yes"
          ports:
            - name: mariadb
              containerPort: 3306
          volumeMounts:
            - name: mariadb-pvc
              mountPath: /var/lib/mysql
  volumeClaimTemplates:
    - metadata:
        name: mariadb-pvc
      spec:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: 20Gi
---
apiVersion: v1
kind: Service
metadata:
  name: mariadb
  labels:
    app: mariadb
spec:
  selector:
    app: mariadb
  ports:
    - name: mariadb
      port: 3306