Kro RGD for WordPress

wp-rgd.yaml

apiVersion: kro.run/v1alpha1
kind: ResourceGraphDefinition
metadata:
  name: wp-app
spec:
  schema:
    apiVersion: v1alpha1
    kind: Application
    spec:
      name: string | default="wordpress"
      mysqlPassword: string
      storageClass: string | default="standard"
      ingress:
        enabled: boolean | default=false
  resources:
    - id: mysqlSecret
      template:
        apiVersion: v1
        kind: Secret
        metadata:
          name: ${schema.spec.name}-mysql-pass
        type: Opaque
        data:
          password: ${schema.spec.mysqlPassword} 

    - id: mysqlPvc
      template:
        apiVersion: v1
        kind: PersistentVolumeClaim
        metadata:
          name: ${schema.spec.name}-mysql-pv-claim
          labels:
            app: ${schema.spec.name}
        spec:
          storageClassName: ${schema.spec.storageClass}
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 1Gi

    - id: mysqlDeployment
      template:
        apiVersion: apps/v1
        kind: Deployment
        metadata:
          name: ${schema.spec.name}-wordpress-mysql
          labels:
            app: ${schema.spec.name}
        spec:
          replicas: 1
          selector:
            matchLabels:
              app: ${schema.spec.name}
              tier: mysql
          strategy:
            type: Recreate
          template:
            metadata:
              labels:
                app: ${schema.spec.name}
                tier: mysql
            spec:
              containers:
              - image: mysql:8.0
                name: mysql
                env:
                - name: MYSQL_ROOT_PASSWORD
                  valueFrom:
                    secretKeyRef:
                      name: ${schema.spec.name}-mysql-pass
                      key: password
                - name: MYSQL_DATABASE
                  value: wordpress
                - name: MYSQL_USER
                  value: wordpress
                - name: MYSQL_PASSWORD
                  valueFrom:
                    secretKeyRef:
                      name: ${schema.spec.name}-mysql-pass
                      key: password
                ports:
                - containerPort: 3306
                  name: mysql
                volumeMounts:
                - name: mysql-persistent-storage
                  mountPath: /var/lib/mysql
              volumes:
              - name: mysql-persistent-storage
                persistentVolumeClaim:
                  claimName: ${schema.spec.name}-mysql-pv-claim

    - id: mysqlService
      template:
        apiVersion: v1
        kind: Service
        metadata:
          name: ${schema.spec.name}-wordpress-mysql
          labels:
            app: ${schema.spec.name}
        spec:
          ports:
            - port: 3306
          selector:
            app: ${schema.spec.name}
            tier: mysql
          clusterIP: None

    - id: wordpressPvc
      template:
        apiVersion: v1
        kind: PersistentVolumeClaim
        metadata:
          name: ${schema.spec.name}-wp-pv-claim
          labels:
            app: ${schema.spec.name}
        spec:
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 1Gi
          storageClassName: ${schema.spec.storageClass}

    - id: wordpressDeployment
      template:
        apiVersion: apps/v1
        kind: Deployment
        metadata:
          name: ${schema.spec.name}-wordpress
          labels:
            app: ${schema.spec.name}
        spec:
          replicas: 1
          selector:
            matchLabels:
              app: ${schema.spec.name}
              tier: frontend
          strategy:
            type: Recreate
          template:
            metadata:
              labels:
                app: ${schema.spec.name}
                tier: frontend
            spec:
              containers:
              - image: wordpress:6.2.1-apache
                name: wordpress
                env:
                - name: WORDPRESS_DB_HOST
                  value: ${schema.spec.name}-wordpress-mysql
                - name: WORDPRESS_DB_PASSWORD
                  valueFrom:
                    secretKeyRef:
                      name: ${schema.spec.name}-mysql-pass
                      key: password
                - name: WORDPRESS_DB_USER
                  value: wordpress
                ports:
                - containerPort: 80
                  name: wordpress
                volumeMounts:
                - name: wordpress-persistent-storage
                  mountPath: /var/www/html
              volumes:
              - name: wordpress-persistent-storage
                persistentVolumeClaim:
                  claimName: ${schema.spec.name}-wp-pv-claim

    - id: wordpressService
      template:
        apiVersion: v1
        kind: Service
        metadata:
          name: ${schema.spec.name}-wordpress
          labels:
            app: ${schema.spec.name}
        spec:
          ports:
            - port: 80
          selector:
            app: ${schema.spec.name}
            tier: frontend
          type: NodePort

    - id: wordpressIngress
      includeWhen:
        - ${schema.spec.ingress.enabled}
      template:
        apiVersion: networking.k8s.io/v1
        kind: Ingress
        metadata:
          name: ${schema.spec.name}-ingress
          annotations:
            kubernetes.io/ingress.class: nginx
        spec:
          rules:
          - host: ${schema.spec.name}.example.com
            http:
              paths:
              - path: /
                pathType: Prefix
                backend:
                  service:
                    name: ${schema.spec.name}-wordpress
                    port:
                      number: 80