# MariaDB 11 — pinned to node: adder-worker
# Local PersistentVolume: 25GB on adder's disk
# Runs in default namespace
#
# Deploy:
#   kubectl create secret generic mariadb-secret --from-literal=root-password='<password>'
#   kubectl apply -f mariadb.yaml

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: mariadb-pv
spec:
  capacity:
    storage: 25Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: local-storage
  local:
    path: /var/lib/k3s-data/mariadb
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
            - key: kubernetes.io/hostname
              operator: In
              values:
                - adder-worker

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mariadb-pvc
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: local-storage
  resources:
    requests:
      storage: 25Gi

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mariadb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mariadb
  template:
    metadata:
      labels:
        app: mariadb
    spec:
      nodeName: adder-worker
      containers:
        - name: mariadb
          image: mariadb:11
          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mariadb-secret
                  key: root-password
          ports:
            - containerPort: 3306
          volumeMounts:
            - name: mariadb-storage
              mountPath: /var/lib/mysql
      volumes:
        - name: mariadb-storage
          persistentVolumeClaim:
            claimName: mariadb-pvc

---
apiVersion: v1
kind: Service
metadata:
  name: mariadb
spec:
  selector:
    app: mariadb
  ports:
    - port: 3306
      targetPort: 3306
  type: ClusterIP