RHCA之路—EX280(2)

1. 题目

Associate the share named /exports/registry to the built-in registry running within your OpenShift Enterprise instance so that it will be used for permanent storage
Use exam-registry-volume for the volume name and exam-registry-claim for the claim name
You can find sample YAML files on http://materials.example.com/exam280/storage/pv.yaml
(Note: This task needs to be solved before any applications are created)

2. 解题

2.1 获取pv模板文件

[root@master ~]# wget http://materials.example.com/exam280/storage/pv.yaml
--2023-09-04 14:53:08--  http://materials.example.com/exam280/storage/pv.yaml
Resolving materials.example.com (materials.example.com)... 172.25.254.254
Connecting to materials.example.com (materials.example.com)|172.25.254.254|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 230
Saving to: ‘pv.yaml’

100%[===========================================================================================================>] 230         --.-K/s   in 0s

2023-09-04 14:53:08 (47.0 MB/s) - ‘pv.yaml’ saved [230/230]

2.2 编辑pv模板文件

[root@master ~]# vim pv.yaml

按题意修改4,11行内容

apiVersion: v1
kind: PersistentVolume
metadata:
  name: exam-registry-volume
spec:
  capacity:
    storage: 5Gi
  accessModes:
  - ReadWriteOnce
  nfs:
    path: /exports/registry
    server: services.lab.example.com
  persistentVolumeReclaimPolicy: Recycle

2.3 生效pv

[root@master ~]# oc create -f pv.yaml
persistentvolume "exam-registry-volume" created

2.4 将pv挂载给dc/docker-registry

[root@master ~]# oc set volume dc/docker-registry --add --name=registry-storage -t pvc \ 
--claim-name=exam-registry-claim --claim-size=5G --overwrite
persistentvolumeclaims/exam-registry-claim
deploymentconfig "docker-registry" updated

3. 确认

3.1 确认pv被创建

[root@master ~]# oc get pv |grep exam-registry-volume
exam-registry-volume   5Gi        RWO            Recycle          Bound     default/exam-registry-claim                                      4m

3.2 确认pvc被创建

[root@master ~]# oc get pvc
NAME                  STATUS    VOLUME                 CAPACITY   ACCESS MODES   STORAGECLASS   AGE
exam-registry-claim   Bound     exam-registry-volume   5Gi        RWO                           2m

3.3 确认pvc被正常挂载

[root@master ~]# oc describe dc docker-registry |grep -A 2 registry-storage
      /registry from registry-storage (rw)
  Volumes:
   registry-certificates:
--
   registry-storage:
    Type:       PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  exam-registry-claim

3.4 确认pod状态正常

[root@master ~]# oc get pod |grep docker-registry|grep -i running
docker-registry-2-4pcwl    1/1       Running   0          5m