volume

host_path.yaml

apiVersion: v1
kind: Pod
metadata:
  name: test-pd
spec:
  containers:
  - name: busybox1
    image: busybox
    command: ["/bin/sh"]
    args: ["-c", "while true; do echo hello; sleep 10;done"]
    volumeMounts:
    - mountPath: /test-pd
      name: test-volume
  - name: busybox2
    image: busybox
    command: ["/bin/sh"]
    args: ["-c", "while true; do echo hello; sleep 10;done"]
    volumeMounts:
    - mountPath: /test-pd
      name: test-volume
  volumes:
  - name: test-volume
    hostPath:
      # directory location on host
      path: /data
      # this field is optional
      type: Directory

首选在ubutu-129和130创建目录，/data，用于挂载

kubectl create  -f host_path.yaml
root@ubuntu-128:/home/itcast/working/volume# kubectl get pod
NAME                                READY   STATUS    RESTARTS   AGE
nginx-deployment-5896fbb489-2vp6n   1/1     Running   1          24h
nginx-deployment-5896fbb489-snj49   1/1     Running   1          24h
test-pd                             2/2     Running   0          6m15s

 成功运行pod，且pod运行在129node节点上

root@ubuntu-128:~# kubectl get pods -o wide
NAME                                READY   STATUS    RESTARTS   AGE    IP            NODE         NOMINATED NODE   READINESS GATES
nginx-deployment-5896fbb489-2vp6n   1/1     Running   1          24h    10.244.1.7    ubuntu-130   <none>           <none>
nginx-deployment-5896fbb489-snj49   1/1     Running   1          24h    10.244.2.18   ubuntu-129   <none>           <none>
test-pd                             2/2     Running   0          114s   10.244.2.20   ubuntu-129   <none>           <none>

登录container，发现容器的目录成功挂载到了本地磁盘/data目录

root@ubuntu-128:/home/itcast/working/volume# kubectl exec test-pd -it sh
Defaulting container name to busybox1.
Use 'kubectl describe pod/test-pd -n default' to see all of the containers in this pod.
/ # ls
bin      dev      etc      home     proc     root     sys      test-pd  tmp      usr      var
/ # cd test-pd/
/test-pd # ll
sh: ll: not found
/test-pd # ls
test
/test-pd # more test
aaaaa
/test-pd # ifconfig
eth0      Link encap:Ethernet  HWaddr 0A:58:0A:F4:02:14
          inet addr:10.244.2.20  Bcast:0.0.0.0  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1450  Metric:1
          RX packets:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3489 (3.4 KiB)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

/test-pd # ls
test
/test-pd # more test
aaaaa
666666666

root@ubuntu-129:/data# more test
aaaaa
666666666

PV和PVC的使用