---
# tasks file for deploy-mariadb.yml
- name: Create a ConfigMap for database schema
  k8s:
    state: present
    api_version: v1
    kind: ConfigMap
    name: mariadb
    namespace: eom
    definition:
      data:
        schema.sql: "{{ lookup('template', 'schema.sql.j2') }}"

- name: Create persistent volume for mariadb
  k8s:
    state: present
    definition:
      apiVersion: v1
      kind: PersistentVolume
      metadata:
        name: mariadb
      spec:
        capacity:
          storage: "{{ mariadb_storage }}"
        accessModes:
          - ReadWriteOnce
        persistentVolumeReclaimPolicy: Retain
        storageClassName: standard
        hostPath:
          path: "/data/store-0/eom/mariadb"
        nodeAffinity:
          required:
            nodeSelectorTerms:
              - matchExpressions:
                - key: kubernetes.io/hostname
                  operator: In
                  values:
                    - alpha-worker-0

- name: Create persistent volume claim for mariadb
  k8s:
    state: present
    definition:
      apiVersion: v1
      kind: PersistentVolumeClaim
      metadata:
        name: mariadb
        namespace: eom
      spec:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: "{{ mariadb_storage }}"
        storageClassName: standard
        volumeName: mariadb

- name: Create a deployment
  k8s:
    definition:
      apiVersion: apps/v1
      kind: Deployment
      metadata:
        name: mariadb
        namespace: eom
      spec:
        replicas: 1
        selector:
          matchLabels:
            app: mariadb
        template:
          metadata:
            labels:
              app: mariadb
          spec:
            containers:
              - name: mariadb
                image: mariadb
                volumeMounts:
                  - name: mariadb
                    mountPath: /var/lib/mysql
                  - name: schema-sql
                    mountPath: /docker-entrypoint-initdb.d
                ports:
                  - containerPort: 3306
                env:
                  - name: MARIADB_ROOT_PASSWORD
                    value: "{{ mariadb_root_password }}"
            volumes:
              - name: schema-sql
                configMap:
                  name: mariadb
              - name: mariadb
                persistentVolumeClaim:
                  claimName: mariadb

- name: Expose deployment as a service
  k8s:
    definition:
      apiVersion: v1
      kind: Service
      metadata:
        name: mariadb
        namespace: eom
      spec:
        selector:
          app: mariadb
        ports:
          - port: 3306
            protocol: TCP
            name: mariadb-port-3306
        type: ClusterIP