apiVersion: v1
kind: Secret
metadata:
  name: mysql-secret
type: Opaque
data:
  # Encoded base64 string required by kubernetes
  # echo -n '<wanted_value>' | base64
  mysql-root-password: cm9vdA==
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql-db-deployment
  labels:
    app: mysql
    service: db
spec:
  serviceName: mysql-db-service
  replicas: 1
  selector:
    matchLabels:
      app: mysql
      service: db
  template:
    metadata:
      labels:
        app: mysql
        service: db
    spec:
      containers:
      - name: mysql
        image: mysql:9
        resources:
          requests:
            memory: "512Mi"
            cpu: "1000m"
          limits:
            memory: "2048Mi"
            cpu: "2000m"
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-secret
              key: mysql-root-password
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
  volumeClaimTemplates:
  - metadata:
      name: mysql-data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 10Gi
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-db-service
spec:
  type: ClusterIP
  selector:
    app: mysql
    service: db
  ports:
  - protocol: TCP
    port: 3306
    targetPort: 3306
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-configmap
data:
  mysql-server: mysql-db-service
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-phpmyadmin-deployment
  labels:
    app: mysql
    service: phpmyadmin
spec:
  replicas: 2
  selector:
    matchLabels:
      app: mysql
      service: phpmyadmin
  template:
    metadata:
      labels:
        app: mysql
        service: phpmyadmin
    spec:
      containers:
      - name: phpmyadmin
        image: phpmyadmin:5.2
        resources:
          limits:
            memory: "256Mi"
            cpu: "1000m"
        ports:
        - containerPort: 80
        env:
        - name: PMA_HOST
          valueFrom:
            configMapKeyRef:
              name: mysql-configmap
              key: mysql-server
        - name: PMA_USER
          value: root
        - name: PMA_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-secret
              key: mysql-root-password
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-phpmyadmin-service
spec:
  type: ClusterIP
  selector:
    app: mysql
    service: phpmyadmin
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: mysql-phpmyadmin-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: mysql-phpmyadmin-service
            port:
              number: 80