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GlusterFS是一个开源的分布式文件，具有强大的横向扩展能力，可支持数PB存储容量和数千客户端，通过网络互连成一个并行的网络文件系统。具有扩展性、高性能、高可用性等特点。

前提：必须要在实验环境中部署了Gluster FS集群，文中创建了名为：gv0的存储卷

1.创建endpoint，文件名为glusterfs_ep.yaml

$ vi glusterfs_ep.yaml apiVersion: v1 kind: Endpoints metadata: name: glusterfs namespace: default subsets: # 添加GlusterFS各个集群的IP地址 - addresses: - ip: 10.0.0.41 - ip: 10.0.0.42 ports: # 添加GlusterFS端口号 - port: 49152 protocol: TCP

执行yaml

$ kubectl create -f glusterfs_ep.yaml endpoints/glusterfs created // 查看创建好的endpoints [[email protected] ~]# kubectl get ep NAME ENDPOINTS AGE glusterfs 10.0.0.41:49152,10.0.0.42:49152 15s

2.为该endpoint创建svc
Endpoint是GlusterFS的集群节点，那么需要访问到这些节点，就需要创建svc

$ vi glusterfs_svc.yaml apiVersion: v1 kind: Service metadata: # 该名称必须要和endpoint里的name一致 name: glusterfs spec: ports: - port: 49152 protocol: TCP targetPort: 49152 sessionAffinity: None type: ClusterIP

执行yaml

$ kubectl create -f glusterfs_svc.yaml service/glusterfs created $ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE glusterfs ClusterIP 10.1.104.145 <none> 49152/TCP 20s

3.为Glusterfs创建pv

$ vi glusterfs_pv.yaml apiVersion: v1 kind: PersistentVolume metadata: name: gluster labels: type: glusterfs spec: capacity: # 指定该pv的容量 storage: 50Gi accessModes: - ReadWriteMany glusterfs: # 指定glusterfs的endpoint名称 endpoints: "glusterfs" # path名称是在glusterfs里创建的卷 # 可登录到glusterfs集群执行"gluster volume list"命令来查看已创建的卷 path: "gv0" readOnly: false

执行yaml

$ kubectl create -f glusterfs_pv.yaml persistentvolume/gluster created $ kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE gluster 50Gi RWX Retain Available 10s

4.为Glusterfs创建pvc

$ vi glusterfs_pvc.yaml apiVersion: v1 kind: PersistentVolumeClaim metadata: # 名称必须和指定的pv一致 name: gluster spec: accessModes: - ReadWriteMany resources: requests: # 指定该pvc使用pv的容量空间 storage: 20Gi

执行yaml

$ kubectl create -f glusterfs_pvc.yaml persistentvolumeclaim/gluster created $ kubectl get pvc NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE gluster Bound gluster 50Gi RWX 83s

5.创建nginx pod并挂载到cluster的pvc nginx_pod.yaml

$ vim nginx-demo.yaml --- # Pod apiVersion: v1 kind: Pod metadata: name: nginx labels: app: web env: test spec: containers: - name: nginx image: nginx:1.13 ports: - containerPort: 80 volumeMounts: - name: data-gv0 mountPath: /usr/share/nginx/html volumes: - name: data-gv0 persistentVolumeClaim: # 绑定指定的pv claimName: gluster

执行yaml

$ kubectl create -f nginx-demo.yaml pod/nginx created [[email protected] ~]# kubectl get pods | grep "nginx" nginx 1/1 Running 0 2m 10.244.1.222 k8s-node01 <none> <none>

在任意客户端挂载/mnt到glusterfs目录，然后创建一个index.html文件

$ mount -t glusterfs k8s-store01:/gv0 /mnt/ $ cd /mnt && echo "this nginx store used gluterfs cluster" >index.html

在master节点上通过curl访问pod

$ curl 10.244.1.220/index.html this nginx store used gluterfs cluster

Kubernetes 持久化存储之GlusterFS

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