Kubernetes---Volume存储卷
一、Volume存储卷简介
Volume将容器中的指定数据和容器解耦， 并将数据存储到指定的位置， 不同的存储卷功能不一样， 如果是基于网络存储的存储卷可以可实现容器间的数据共享和持久化。
静态存储卷需要在使用前手动创建PV和PVC， 然后绑定至pod使用。
常用的几种卷：
- Secret： 是一种包含少量敏感信息例如密码、 令牌或密钥的对象
- configmap: 配置文件
- emptyDir： 本地临时卷
- hostPath： 本地存储卷
- nfs等： 网络存储卷
官方介绍：https://kubernetes.io/zh/docs/concepts/storage/volumes/
二、emptyDir测试
当 Pod 被分配给节点时， 首先创建 emptyDir 卷，并且只要该 Pod 在该节点上运行，该卷就会存在，正如卷的名字所述，它最初是空的，Pod 中的容器可以读取和写入 emptyDir 卷中的相同文件，尽管该卷可以挂载到每个容器中的相同或不同路径上。 当出于任何原因从节点中删除 Pod 时， emptyDir 中的数据将被永久删除。
emptyDir测试
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case3# cat deploy_empty.yml #apiVersion: extensions/v1beta1 apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment spec: replicas: 1 selector: matchLabels: #rs or deployment app: ng-deploy-80 template: metadata: labels: app: ng-deploy-80 spec: containers: - name: ng-deploy-80 image: nginx ports: - containerPort: 80 volumeMounts: - mountPath: /cache name: cache-volume-n70 volumes: - name: cache-volume-n70 emptyDir: {} root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case3# kubectl apply -f deploy_empty.yml #宿主机没有的目录会由kubelet新建
deployment.apps/nginx-deployment created root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case3# kubectl get pod NAME READY STATUS RESTARTS AGE mysql-77d55bfdd8-cbtcz 1/1 Running 2 (2d11h ago) 3d10h nginx-deployment-5456b77c9d-27dgp 1/1 Running 0 50s root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case3# kubectl exec -it nginx-deployment-5456b77c9d-27dgp bash kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. root@nginx-deployment-5456b77c9d-27dgp:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 48G 13G 33G 28% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mapper/ubuntu--vg-ubuntu--lv 48G 13G 33G 28% /cache shm 64M 0 64M 0% /dev/shm tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount tmpfs 3.9G 0 3.9G 0% /proc/acpi tmpfs 3.9G 0 3.9G 0% /proc/scsi tmpfs 3.9G 0 3.9G 0% /sys/firmware root@nginx-deployment-5456b77c9d-27dgp:/#
三、hostPath
hostPath 卷将主机节点的文件系统中的文件或目录挂载到集群中， pod删除的时候， 卷不会被删除
hostPath测试
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# vi deploy_hostPath.yml root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# cat deploy_hostPath.yml #apiVersion: extensions/v1beta1 apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment spec: replicas: 1 selector: matchLabels: app: ng-deploy-80 template: metadata: labels: app: ng-deploy-80 spec: containers: - name: ng-deploy-80 image: nginx ports: - containerPort: 80 volumeMounts: - mountPath: /data/n70 name: cache-n70-volume volumes: - name: cache-n70-volume hostPath: path: /opt/n70 root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# kubectl apply -f deploy_hostPath.yml deployment.apps/nginx-deployment created root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# kubectl get pod -owide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES nginx-deployment-75b469846-gfr6v 1/1 Running 0 16s 10.200.104.231 172.16.88.163 <none> <none> root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# kubectl exec -it nginx-deployment-75b469846-gfr6v bash kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. root@nginx-deployment-75b469846-gfr6v:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 48G 13G 33G 28% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mapper/ubuntu--vg-ubuntu--lv 48G 13G 33G 28% /data/n70 shm 64M 0 64M 0% /dev/shm tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount tmpfs 3.9G 0 3.9G 0% /proc/acpi tmpfs 3.9G 0 3.9G 0% /proc/scsi tmpfs 3.9G 0 3.9G 0% /sys/firmware root@nginx-deployment-75b469846-gfr6v:/#
#宿主机查看多了个n70目录
[root@easzlab-k8s-node-04 ~]# ll -h /opt total 28K drwxr-xr-x 7 root root 4.0K Oct 22 10:40 ./ drwxr-xr-x 20 root root 4.0K Oct 20 16:28 ../ drwx--x--x 4 root root 4.0K Oct 18 17:06 containerd/ drwxr-xr-x 3 root root 4.0K Oct 13 20:28 kube/ drwxr-xr-x 2 root root 4.0K Oct 22 10:37 n70/ drwxr-xr-x 2 root root 4.0K Oct 13 23:34 node_exporter/ drwxr-xr-x 2 root root 4.0K Oct 13 23:34 process-exporter/ [root@easzlab-k8s-node-04 ~]#
[root@easzlab-k8s-node-04 ~]# cd /opt/n70/
[root@easzlab-k8s-node-04 n70]# ls
[root@easzlab-k8s-node-04 n70]# touch test-{01..09}.txt #在宿主机创建文件
[root@easzlab-k8s-node-04 n70]# ll -h
total 8.0K
drwxr-xr-x 2 root root 4.0K Oct 22 10:44 ./
drwxr-xr-x 7 root root 4.0K Oct 22 10:40 ../
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-01.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-02.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-03.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-04.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-05.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-06.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-07.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-08.txt
-rw-r--r-- 1 root root 0 Oct 22 10:44 test-09.txt
[root@easzlab-k8s-node-04 n70]#
root@nginx-deployment-75b469846-gfr6v:/data/n70# ls -lh #立即映射到容器内部
total 0
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-01.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-02.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-03.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-04.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-05.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-06.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-07.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-08.txt
-rw-r--r-- 1 root root 0 Oct 22 02:44 test-09.txt
root@nginx-deployment-75b469846-gfr6v:/data/n70#
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# kubectl delete -f deploy_hostPath.yml #删除pod,此时宿主机文件还存在 deployment.apps "nginx-deployment" deleted root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# kubectl get pod No resources found in default namespace. root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case4# [root@easzlab-k8s-node-04 ~]# ll -h /opt/ total 28K drwxr-xr-x 7 root root 4.0K Oct 22 10:40 ./ drwxr-xr-x 20 root root 4.0K Oct 20 16:28 ../ drwx--x--x 4 root root 4.0K Oct 18 17:06 containerd/ drwxr-xr-x 3 root root 4.0K Oct 13 20:28 kube/ drwxr-xr-x 2 root root 4.0K Oct 22 10:44 n70/ drwxr-xr-x 2 root root 4.0K Oct 13 23:34 node_exporter/ drwxr-xr-x 2 root root 4.0K Oct 13 23:34 process-exporter/ [root@easzlab-k8s-node-04 ~]# ll -h /opt/n70/ total 8.0K drwxr-xr-x 2 root root 4.0K Oct 22 10:44 ./ drwxr-xr-x 7 root root 4.0K Oct 22 10:40 ../ -rw-r--r-- 1 root root 0 Oct 22 10:44 test-01.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-02.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-03.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-04.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-05.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-06.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-07.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-08.txt -rw-r--r-- 1 root root 0 Oct 22 10:44 test-09.txt [root@easzlab-k8s-node-04 ~]#
四、nfs共享存储
nfs 卷允许将现有的 NFS（网络文件系统） 挂载到容器中， 且不像 emptyDir会丢失数据， 当删除 Pod 时， nfs 卷的内容被保留， 卷仅仅是被卸载， 这意味着 NFS 卷可以预先上传好数据待pod启动后即可直接使用， 并且网络存储可以在多 pod 之间共享同一份数据， 即NFS 可以被多个pod同时挂载和读写。
创建多个pod测试挂载同一个NFS
[root@easzlab-k8s-nfs-01 ~]# mkdir -p /data/magedu/n70 #在nfs节点创建nfs共享目录
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# cat deploy_nfs.yml #apiVersion: extensions/v1beta1 apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment spec: replicas: 3 #设置多个pod副本 selector: matchLabels: app: ng-deploy-80 template: metadata: labels: app: ng-deploy-80 spec: containers: - name: ng-deploy-80 image: nginx ports: - containerPort: 80 volumeMounts: - mountPath: /usr/share/nginx/html/mysite name: my-nfs-volume - mountPath: /usr/share/nginx/html/js name: my-nfs-js volumes: - name: my-nfs-volume nfs: server: 172.16.88.169 path: /data/magedu/n70 - name: my-nfs-js nfs: server: 172.16.88.169 path: /data/magedu/n70 --- apiVersion: v1 kind: Service metadata: name: ng-deploy-80 spec: ports: - name: http port: 81 targetPort: 80 nodePort: 30016 protocol: TCP type: NodePort selector: app: ng-deploy-80 root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl apply -f deploy_nfs.yml deployment.apps/nginx-deployment created service/ng-deploy-80 created root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5#
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl get pod -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-deployment-5dc89d5c99-lt4fh 1/1 Running 0 3m17s 10.200.40.199 172.16.88.160 <none> <none>
nginx-deployment-5dc89d5c99-tv65r 1/1 Running 0 3m17s 10.200.104.235 172.16.88.163 <none> <none>
nginx-deployment-5dc89d5c99-vgxf6 1/1 Running 0 3m17s 10.200.105.164 172.16.88.164 <none> <none>
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5#
创建文件测试
[root@easzlab-k8s-nfs-01 n70]# touch index-test.html [root@easzlab-k8s-nfs-01 n70]# ll -h total 0 drwxr-xr-x 2 root root 29 Oct 22 11:07 ./ drwxr-xr-x 3 root root 17 Oct 22 10:57 ../ -rw-r--r-- 1 root root 0 Oct 22 11:07 index-test.html [root@easzlab-k8s-nfs-01 n70]#
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl get pod -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-deployment-5dc89d5c99-lt4fh 1/1 Running 0 3m17s 10.200.40.199 172.16.88.160 <none> <none>
nginx-deployment-5dc89d5c99-tv65r 1/1 Running 0 3m17s 10.200.104.235 172.16.88.163 <none> <none>
nginx-deployment-5dc89d5c99-vgxf6 1/1 Running 0 3m17s 10.200.105.164 172.16.88.164 <none> <none>
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5#
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-5dc89d5c99-lt4fh bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
root@nginx-deployment-5dc89d5c99-lt4fh:/# df -h
Filesystem Size Used Avail Use% Mounted on
overlay 48G 9.5G 36G 21% /
tmpfs 64M 0 64M 0% /dev
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/ubuntu--vg-ubuntu--lv 48G 9.5G 36G 21% /etc/hosts
shm 64M 0 64M 0% /dev/shm
tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount
172.16.88.169:/data/magedu/n70 200G 1.5G 199G 1% /usr/share/nginx/html/js
tmpfs 3.9G 0 3.9G 0% /proc/acpi
tmpfs 3.9G 0 3.9G 0% /proc/scsi
tmpfs 3.9G 0 3.9G 0% /sys/firmware
root@nginx-deployment-5dc89d5c99-lt4fh:/# ls -lh /usr/share/nginx/html/js
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-lt4fh:/# ls -lh /usr/share/nginx/html/mysite/
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-lt4fh:/# exit
exit
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-5dc89d5c99-tv65r bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
root@nginx-deployment-5dc89d5c99-tv65r:/# df -h
Filesystem Size Used Avail Use% Mounted on
overlay 48G 13G 33G 28% /
tmpfs 64M 0 64M 0% /dev
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/ubuntu--vg-ubuntu--lv 48G 13G 33G 28% /etc/hosts
shm 64M 0 64M 0% /dev/shm
tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount
172.16.88.169:/data/magedu/n70 200G 1.5G 199G 1% /usr/share/nginx/html/js
tmpfs 3.9G 0 3.9G 0% /proc/acpi
tmpfs 3.9G 0 3.9G 0% /proc/scsi
tmpfs 3.9G 0 3.9G 0% /sys/firmware
root@nginx-deployment-5dc89d5c99-tv65r:/# ls -lh /usr/share/nginx/html/js
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-tv65r:/#
root@nginx-deployment-5dc89d5c99-tv65r:/# ls -lh /usr/share/nginx/html/mysite/
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-tv65r:/#
root@nginx-deployment-5dc89d5c99-tv65r:/# exit
exit
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-5dc89d5c99-vgxf6 bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
root@nginx-deployment-5dc89d5c99-vgxf6:/# df -h
Filesystem Size Used Avail Use% Mounted on
overlay 48G 12G 34G 26% /
tmpfs 64M 0 64M 0% /dev
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/ubuntu--vg-ubuntu--lv 48G 12G 34G 26% /etc/hosts
shm 64M 0 64M 0% /dev/shm
tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount
172.16.88.169:/data/magedu/n70 200G 1.5G 199G 1% /usr/share/nginx/html/js
tmpfs 3.9G 0 3.9G 0% /proc/acpi
tmpfs 3.9G 0 3.9G 0% /proc/scsi
tmpfs 3.9G 0 3.9G 0% /sys/firmware
root@nginx-deployment-5dc89d5c99-vgxf6:/#
root@nginx-deployment-5dc89d5c99-vgxf6:/# ls -lh /usr/share/nginx/html/js/
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-vgxf6:/#
root@nginx-deployment-5dc89d5c99-vgxf6:/# ls -lh /usr/share/nginx/html/mysite/
total 0
-rw-r--r-- 1 root root 0 Oct 22 03:07 index-test.html
root@nginx-deployment-5dc89d5c99-vgxf6:/#
创建多个pod测试每个pod挂载多个NFS
[root@easzlab-k8s-nfs-01 ~]# mkdir /data/k8sdata/pool{1,2} [root@easzlab-k8s-nfs-01 ~]# ll -h /data/k8sdata/ total 0 drwxr-xr-x 4 root root 32 Oct 22 11:22 ./ drwxr-xr-x 4 root root 35 Oct 22 11:15 ../ drwxr-xr-x 2 root root 6 Oct 22 11:22 pool1/ drwxr-xr-x 2 root root 6 Oct 22 11:22 pool2/ [root@easzlab-k8s-nfs-01 ~]# root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# vi deploy_nfs2.yml root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# cat deploy_nfs2.yml apiVersion: apps/v1 kind: Deployment metadata: name: nginx-deployment-site2 spec: replicas: 3 selector: matchLabels: app: ng-deploy-81 template: metadata: labels: app: ng-deploy-81 spec: containers: - name: ng-deploy-81 image: nginx ports: - containerPort: 80 volumeMounts: - mountPath: /usr/share/nginx/html/pool1 name: my-nfs-volume-pool1 - mountPath: /usr/share/nginx/html/pool2 name: my-nfs-volume-pool2 volumes: - name: my-nfs-volume-pool1 nfs: server: 172.16.88.169 path: /data/k8sdata/pool1 - name: my-nfs-volume-pool2 nfs: server: 172.16.88.169 path: /data/k8sdata/pool2 --- apiVersion: v1 kind: Service metadata: name: ng-deploy-81 spec: ports: - name: http port: 80 targetPort: 80 nodePort: 30017 protocol: TCP type: NodePort selector: app: ng-deploy-81 root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl apply -f deploy_nfs2.yml deployment.apps/nginx-deployment-site2 created service/ng-deploy-81 created root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl get pod -owide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES nginx-deployment-site2-76fb9f9b7f-dt7pm 1/1 Running 0 20s 10.200.233.99 172.16.88.161 <none> <none> nginx-deployment-site2-76fb9f9b7f-jfpnt 1/1 Running 0 21s 10.200.104.234 172.16.88.163 <none> <none> nginx-deployment-site2-76fb9f9b7f-mr6nv 1/1 Running 0 20s 10.200.105.163 172.16.88.164 <none> <none> root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5#
验证pod挂载
root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl get pod -owide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES nginx-deployment-site2-76fb9f9b7f-dt7pm 1/1 Running 0 20s 10.200.233.99 172.16.88.161 <none> <none> nginx-deployment-site2-76fb9f9b7f-jfpnt 1/1 Running 0 21s 10.200.104.234 172.16.88.163 <none> <none> nginx-deployment-site2-76fb9f9b7f-mr6nv 1/1 Running 0 20s 10.200.105.163 172.16.88.164 <none> <none> root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-site2-76fb9f9b7f-dt7pm bash kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. root@nginx-deployment-site2-76fb9f9b7f-dt7pm:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 48G 13G 33G 28% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mapper/ubuntu--vg-ubuntu--lv 48G 13G 33G 28% /etc/hosts shm 64M 0 64M 0% /dev/shm tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount 172.16.88.169:/data/k8sdata/pool1 200G 1.5G 199G 1% /usr/share/nginx/html/pool1 172.16.88.169:/data/k8sdata/pool2 200G 1.5G 199G 1% /usr/share/nginx/html/pool2 tmpfs 3.9G 0 3.9G 0% /proc/acpi tmpfs 3.9G 0 3.9G 0% /proc/scsi tmpfs 3.9G 0 3.9G 0% /sys/firmware root@nginx-deployment-site2-76fb9f9b7f-dt7pm:/# exit exit root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-site2-76fb9f9b7f-jfpnt bash kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. root@nginx-deployment-site2-76fb9f9b7f-jfpnt:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 48G 13G 33G 28% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mapper/ubuntu--vg-ubuntu--lv 48G 13G 33G 28% /etc/hosts shm 64M 0 64M 0% /dev/shm tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount 172.16.88.169:/data/k8sdata/pool1 200G 1.5G 199G 1% /usr/share/nginx/html/pool1 172.16.88.169:/data/k8sdata/pool2 200G 1.5G 199G 1% /usr/share/nginx/html/pool2 tmpfs 3.9G 0 3.9G 0% /proc/acpi tmpfs 3.9G 0 3.9G 0% /proc/scsi tmpfs 3.9G 0 3.9G 0% /sys/firmware root@nginx-deployment-site2-76fb9f9b7f-jfpnt:/# exit exit root@easzlab-deploy:~/jiege-k8s/pod-test/case-yaml/case5# kubectl exec -it nginx-deployment-site2-76fb9f9b7f-mr6nv bash kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. root@nginx-deployment-site2-76fb9f9b7f-mr6nv:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 48G 12G 34G 26% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/mapper/ubuntu--vg-ubuntu--lv 48G 12G 34G 26% /etc/hosts shm 64M 0 64M 0% /dev/shm tmpfs 7.5G 12K 7.5G 1% /run/secrets/kubernetes.io/serviceaccount 172.16.88.169:/data/k8sdata/pool1 200G 1.5G 199G 1% /usr/share/nginx/html/pool1 172.16.88.169:/data/k8sdata/pool2 200G 1.5G 199G 1% /usr/share/nginx/html/pool2 tmpfs 3.9G 0 3.9G 0% /proc/acpi tmpfs 3.9G 0 3.9G 0% /proc/scsi tmpfs 3.9G 0 3.9G 0% /sys/firmware root@nginx-deployment-site2-76fb9f9b7f-mr6nv:/#
