k8s部署wordpress

1.有基础环境（k8s，docker-ce，docker-compose）
(node节点的；
docker pull $IP/library/wordpress:4.8-apache
docker pull $IP/library/mysql:5.6
docker pull $IP/library/busybox:1.28
)
2.安装nfs和rpc（两端）
master：
 yum install -y nfs-utils rpcbind
node：
 yum install -y nfs-utils
# systemctl start rpcbind
# systemctl enable rpcbind
# rpcinfo -p localhost
# systemctl start nfs
# systemctl enable nfs
# rpcinfo -p localhost

3.创建挂载目录
# mkdir -p /home/pvdata/mysql
# mkdir -p /home/pvdata/wordpress
# chmod 777 /home/pvdata/mysql 
# chmod 777 /home/pvdata/wordpress

4.写nfs文件
# vim /etc/exports
/home/pvdata/mysql *(rw,sync,insecure,no_subtree_check,no_root_squash)
/home/pvdata/wordpress *(rw,sync,insecure,no_subtree_check,no_root_squash)
# exportfs -r
# exportfs
（初始化）
5.创建mysql pv卷
# cat mysql-persistent-storage.yaml
	apiVersion: v1
	kind: PersistentVolume
	metadata:
	 name: mysql-persistent-storage
	spec:
 	capacity:
	 storage: 20Gi
 	accessModes:
	 - ReadWriteOnce
	 persistentVolumeReclaimPolicy: Recycle
	 storageClassName: nfs
	 nfs:
	 path: /home/pvdata/mysql/
	 server: 10.18.4.10（修改IP即可）
# kubectl apply -f mysql-persistent-storage.yaml

6.创建wordpress pv卷
# cat wordpress-persistent-storage.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
 name: wordpress-persistent-storage
spec:
 capacity:
 storage: 20Gi
 accessModes:
 - ReadWriteOnce
 persistentVolumeReclaimPolicy: Recycle
 storageClassName: nfs
 nfs:
 path: /home/pvdata/wordpress/
 server: 10.18.4.10（改ip）
# kubectl apply -f wordpress-persistent-storage.yaml

7.写kustomization.yaml文件
# cat <<EOF >./kustomization.yaml
secretGenerator:
- name: mysql-pass
 literals:
 - password=123456ok （改密码）
EOF

8.两个重点文件修改
#mysql-de文件
apiVersion: v1
kind: Service
metadata:
  name: wordpress-mysql
  labels:
    app: wordpress
spec:
  ports:
    - port: 3306
  selector:
    app: wordpress
    tier: mysql
  clusterIP: None
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pv-claim
  labels:
    app: wordpress
spec:
  storageClassName: nfs
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
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: 10.0.0.4/library/mysql:5.6
        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-pv-claim

#word-de
apiVersion: v1
kind: Service
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  ports:
    - port: 80
  selector:
    app: wordpress
    tier: frontend
  type: LoadBalancer
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: wp-pv-claim
  labels:
    app: wordpress
spec:
  storageClassName: nfs
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
  name: wordpress
  labels:
    app: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      tier: frontend
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: wordpress
        tier: frontend
    spec:
      containers:
      - image: 10.0.0.4/library/wordpress4.8-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-pv-claim

8.安装开始
# kubectl apply -k ./
9.验证
# kubectl get secrets
# kubectl get pvc
# kubectl get services wordpress

10.访问
http://ip:port