28.2.6. 创建额外 Pod 以引用 Same PVC
此 pod 定义在同一命名空间中创建，使用不同的容器。但是，您可以通过在下面的 volumes 部分中指定声明名称来使用相同的后备存储：
例 28.4. Pod 对象定义
apiVersion: v1 kind: Pod metadata: name: busybox-nfs-pod 1 labels: name: busybox-nfs-pod spec: containers: - name: busybox-nfs-pod image: busybox 2 command: ["sleep", "60000"] volumeMounts: - name: nfsvol-2 3 mountPath: /usr/share/busybox 4 readOnly: false securityContext: supplementalGroups: [100003] 5 privileged: false volumes: - name: nfsvol-2 persistentVolumeClaim: claimName: nfs-pvc 6
将 pod 定义保存到文件中，如 nfs-2.yaml，并创建 pod：
# oc create -f nfs-2.yaml pod "busybox-nfs-pod" created
验证 pod 是否已创建：
# oc get pods NAME READY STATUS RESTARTS AGE busybox-nfs-pod 1/1 Running 0 3s
oc describe pod 命令中显示更多详细信息：
[root@ose70 nfs]# oc describe pod busybox-nfs-pod
Name: busybox-nfs-pod
Namespace: default
Image(s): busybox
Node: ose70.rh7/192.168.234.148
Start Time: Mon, 21 Mar 2016 10:19:46 -0400
Labels: name=busybox-nfs-pod
Status: Running
Reason:
Message:
IP: 10.1.0.5
Replication Controllers: <none>
Containers:
busybox-nfs-pod:
Container ID: docker://346d432e5a4824ebf5a47fceb4247e0568ecc64eadcc160e9bab481aecfb0594
Image: busybox
Image ID: docker://17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2
QoS Tier:
cpu: BestEffort
memory: BestEffort
State: Running
Started: Mon, 21 Mar 2016 10:19:48 -0400
Ready: True
Restart Count: 0
Environment Variables:
Conditions:
Type Status
Ready True
Volumes:
nfsvol-2:
Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
ClaimName: nfs-pvc
ReadOnly: false
default-token-32d2z:
Type: Secret (a secret that should populate this volume)
SecretName: default-token-32d2z
Events:
FirstSeen LastSeen Count From SubobjectPath Reason Message
───────── ──────── ───── ──── ───────────── ────── ───────
4m 4m 1 {scheduler } Scheduled Successfully assigned busybox-nfs-pod to ose70.rh7
4m 4m 1 {kubelet ose70.rh7} implicitly required container POD Pulled Container image "openshift3/ose-pod:v3.1.0.4" already present on machine
4m 4m 1 {kubelet ose70.rh7} implicitly required container POD Created Created with docker id 249b7d7519b1
4m 4m 1 {kubelet ose70.rh7} implicitly required container POD Started Started with docker id 249b7d7519b1
4m 4m 1 {kubelet ose70.rh7} spec.containers{busybox-nfs-pod} Pulled Container image "busybox" already present on machine
4m 4m 1 {kubelet ose70.rh7} spec.containers{busybox-nfs-pod} Created Created with docker id 346d432e5a48
4m 4m 1 {kubelet ose70.rh7} spec.containers{busybox-nfs-pod} Started Started with docker id 346d432e5a48如您所见，两个容器都使用附加到后端上同一 NFS 挂载的相同存储声明。
