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Kubernetes Documentation
Tutorials
Stateful Applications
Example: Deploying WordPress and MySQL with Persistent Volumes
Example: Deploying WordPress and MySQL with Persistent Volumes
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按照教程依次创建yaml文件并复制代码
[root@centos7-188 wordpress]# ls
kustomization.yaml mysql-deployment.yaml wordpress-deployment.yaml -
预备image
Failed to pull image “wordpress:4.8-apache”
使用阿里云容器镜像的 github关联仓库，海外机器构建 Docker 镜像
自行创建了 1 个镜像,目前是公开状态
registry-beijing.aliyuncs/docker-dhbm/wordpress
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预备 pvc 用到的 sc
之前已经创建了 1 个动态 pv
k8s学习： 部署动态 pvc（nfs-subdir-external-provisioner）
[root@centos7-188 wordpress]# kubectl get sc
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE managed-nfs-storage k8s-sigs.io/nfs-subdir-external-provisioner Delete Immediate false 2d3h -
准备密码
echo ‘123456’ |base64
MTIzNDU2Cg== -
准备kustomization.yaml文件
cat <<EOF >./kustomization.yaml secretGenerator: - name: mysql-pass literals: - password=MTIzNDU2Cg== EOF追加 resource
cat <<EOF >>./kustomization.yaml resources: - mysql-deployment.yaml - wordpress-deployment.yaml EOF文件最后结果
[root@centos7-188 wordpress]# cat kustomization.yamlsecretGenerator: - name: mysql-pass literals: - password='MTIzNDU2Cg==' # echo '123456' |base64 # MTIzNDU2Cg== resources: - mysql-deployment.yaml - wordpress-deployment.yaml - -
mysql-deployment.yaml 加上 pvc 的 storageClassName: managed-nfs-storage，原文 pvc 20G 太大，改成 2 G
如果不支持 LoadBalancer ，自行改成 NodePort，或者使用 port-forwardvim mysql-deployment.yaml
clusterIP: None --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-pv-claim labels: app: wordpress spec: storageClassName: managed-nfs-storage # provisioner: k8s-sigs.io/nfs-subdir-external-provisioner accessModes: - ReadWriteOnce resources: requests: storage: 2Gi --- 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:5.6 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 -
wordpress-deployment.yaml 加上 pvc 的 storageClassName: managed-nfs-storage，原文 pvc 20G 太大，改成 2 G
如果不支持 LoadBalancer ，自行改成 NodePort，或者使用 port-forwardvim wordpress-deployment.yaml
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: wp-pv-claim labels: app: wordpress spec: storageClassName: managed-nfs-storage # provisioner: k8s-sigs.io/nfs-subdir-external-provisioner accessModes: - ReadWriteOnce resources: requests: storage: 2Gi --- apiVersion: apps/v1 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: registry-beijing.aliyuncs/docker-dhbm/wordpress # 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-pv-claim -
开始执行创建
kubectl apply -k ./ -
验证资源和服务
[root@centos7-188 wordpress]# kubectl get secrets
NAME TYPE DATA AGE default-token-m66xt kubernetes.io/service-account-token 3 15d mysql-pass-82d992t59h Opaque 1 42m nfs-client-provisioner-token-9bh8g kubernetes.io/service-account-token 3 2d3h[root@centos7-188 wordpress]# kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE mysql-pv-claim Bound pvc-3668cbb9-2210-4c23-983a-07bf8e12c55d 2Gi RWO managed-nfs-storage 43m nfs-pvc Bound nfs-pv 100Mi RWX nfs-pv 32h test-claim Bound pvc-2b577445-6302-4503-982a-00b3c476673f 1Mi RWX managed-nfs-storage 8h wp-pv-claim Bound pvc-e33c3de0-0cc0-4ac5-8de9-f179a6a1663a 2Gi RWO managed-nfs-storage 43m[root@centos7-188 wordpress]# kubectl get pods
NAME READY STATUS RESTARTS AGE demo-654c477f6d-l6lbh 1/1 Running 7 (3h26m ago) 13d demo1-deployment-67fc75ff95-2k259 1/1 Running 3 31h demo1-deployment-67fc75ff95-nc5rx 1/1 Running 3 31h frontend-6cb8c45cd5-2r5xv 1/1 Running 0 3h5m frontend-6cb8c45cd5-bshtl 1/1 Running 0 3h5m frontend-6cb8c45cd5-kh767 1/1 Running 0 3h5m nfs-client-provisioner-554dbf7dd5-qd7hc 1/1 Running 14 2d2h redis-follower-6d6d97bb46-2pxsz 1/1 Running 0 3h5m redis-follower-6d6d97bb46-mlbdk 1/1 Running 0 3h5m redis-leader-fb76b4755-cxmnw 1/1 Running 0 3h8m wordpress-557cbf5c94-lqbd8 1/1 Running 0 23m wordpress-mysql-74978f46c9-cp29d 1/1 Running 0 44m[root@centos7-188 wordpress]# kubectl get services wordpress
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE wordpress LoadBalancer 10.111.206.184 192.168.1.245 80:30498/TCP 44m
10 打开浏览器，查看果实
开始会要求设置语言，然后会开始安装 wordpress ，设置用户名和密码
然后就可看到以下博客画面了！
哈哈哈！本人头一次看到 wordpress 的博客界面！感觉不错！
- 清理现场
kubectl delete -k ./
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