Kubernetes로 Wordpress 구성

먼저 wordpress와 mysql이 사용할 pv를 구성한다.

pv1.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
name: pv0001
labels:
type: local
spec:
capacity:
storage: 25Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data001/pv0001"

pv2.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
name: pv0002
labels:
type: local
spec:
capacity:
storage: 25Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/data001/pv0002"

이제 mysql과 wordpress를 구축할 yaml파일을 작성한다.

mysql.yaml

apiVersion: v1
kind: Service
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  type: ClusterIP
  clusterIP: 10.233.0.100
  ports:
    - protocol: TCP
      port: 3306
  selector:
    app: wordpress
    tier: mysql
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 25Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      tier: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: mysql
    spec:
      containers:
      - image: mysql:5.7
        name: mysql
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              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: mysql-pvc

wordpress.yaml

apiVersion: v1
kind: Service
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 80
  selector:
    app: wordpress
    tier: frontend
  type: LoadBalancer
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: wp-pv
spec:
  capacity:
    storage: 25Gi
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    server: 192.168.201.11
    path: /nfs-volume
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wp-pvc
  labels:
    app: wordpress
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
---
apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  replicas: 2
  selector:
    matchLabels:
      app: wordpress
      tier: frontend
  template:
    metadata:
      labels:
        app: wordpress
        tier: frontend
    spec:
      containers:
      - image: wordpress:4.8-apache
        name: wordpress
        env:
        - name: WORDPRESS_DB_HOST
          value: wordpress-mysql
        - name: WORDPRESS_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password
        ports:
        - containerPort: 80
          name: wordpress
        volumeMounts:
        - name: wordpress-persistent-storage
          mountPath: /var/www/html
      volumes:
      - name: wordpress-persistent-storage
        persistentVolumeClaim:
          claimName: wp-pvc

kustomization.yaml

secretGenerator:
- name: mysql-pass
  literals:
  - password=qwer1234
resources:
  - mysql-deployment.yaml
  - wordpress-deployment.yam

명령어

$ kubectl create -f pv1.yaml
$ kubectl create -f pv2.yaml
$ kubectl apply -k ./

명령어를 입력하면 pod들이 생성되면서 실행될 것이다.

$ kubectl get all

해당 명령어를 입력하여 로드밸런서 ip에 접속하면 wordpress가 실행되는 것을 볼 수 있다.

참조 : https://kubernetes.io/ko/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/