27.3.6. 置备

在 gluster-endpoints.yaml 中定义以下服务和端点：

---
apiVersion: v1
kind: Service
metadata:
  name: glusterfs-cluster 1
spec:
  ports:
  - port: 1
---
apiVersion: v1
kind: Endpoints
metadata:
  name: glusterfs-cluster 2
subsets:
  - addresses:
      - ip: 192.168.122.221 3
    ports:
      - port: 1 4
  - addresses:
      - ip: 192.168.122.222 5
    ports:
      - port: 1 6
  - addresses:
      - ip: 192.168.122.223 7
    ports:
      - port: 1 8

在 OpenShift Container Platform master 主机上创建服务和端点：

$ oc create -f gluster-endpoints.yaml
service "glusterfs-cluster" created
endpoints "glusterfs-cluster" created

验证服务和端点是否已创建：

$ oc get services
NAME                       CLUSTER_IP       EXTERNAL_IP   PORT(S)    SELECTOR        AGE
glusterfs-cluster          172.30.205.34    <none>        1/TCP      <none>          44s

$ oc get endpoints
NAME                ENDPOINTS                                               AGE
docker-registry     10.1.0.3:5000                                           4h
glusterfs-cluster   192.168.122.221:1,192.168.122.222:1,192.168.122.223:1   11s
kubernetes          172.16.35.3:8443                                        4d

若要访问卷，容器必须使用用户 ID(UID)或组 ID(GID)运行，该容器有权访问卷上的文件系统。这些信息可以通过以下方法发现：

$ mkdir -p /mnt/glusterfs/myVol1

$ mount -t glusterfs 192.168.122.221:/myVol1 /mnt/glusterfs/myVol1

$ ls -lnZ /mnt/glusterfs/
drwxrwx---. 592 590 system_u:object_r:fusefs_t:s0    myVol1 1 2

在 gluster-pv.yaml 中定义以下 PersistentVolume(PV)：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: gluster-default-volume 1
  annotations:
    pv.beta.kubernetes.io/gid: "590" 2
spec:
  capacity:
    storage: 2Gi 3
  accessModes: 4
    - ReadWriteMany
  glusterfs:
    endpoints: glusterfs-cluster 5
    path: myVol1 6
    readOnly: false
  persistentVolumeReclaimPolicy: Retain

在 OpenShift Container Platform master 主机上创建 PV：

$ oc create -f gluster-pv.yaml

确定创建了 PV：

$ oc get pv
NAME                     LABELS    CAPACITY     ACCESSMODES   STATUS      CLAIM     REASON    AGE
gluster-default-volume   <none>    2147483648   RWX           Available                       2s

创建一个 PersistentVolumeClaim(PVC)，它将绑定到 gluster-claim.yaml 中的新 PV：

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: gluster-claim  1
spec:
  accessModes:
  - ReadWriteMany      2
  resources:
     requests:
       storage: 1Gi    3

在 OpenShift Container Platform master 主机上创建 PVC：

$ oc create -f gluster-claim.yaml

验证 PV 和 PVC 是否已绑定：

$ oc get pv
NAME         LABELS    CAPACITY   ACCESSMODES   STATUS      CLAIM          REASON    AGE
gluster-pv   <none>    1Gi        RWX           Available   gluster-claim            37s

$ oc get pvc
NAME            LABELS    STATUS    VOLUME       CAPACITY   ACCESSMODES   AGE
gluster-claim   <none>    Bound     gluster-pv   1Gi        RWX           24s