- 环境查看
系统环境
# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
# uname -a
Linux CentOS7K8SMaster01063 3.10.0-1160.108.1.el7.x86_64 #1 SMP Thu Jan 25 16:17:31 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
软件环境
# kubectl version
Client Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.4", GitCommit:"c27b913fddd1a6c480c229191a087698aa92f0b1", GitTreeState:"clean", BuildDate:"2019-02-28T13:37:52Z", GoVersion:"go1.11.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.4", GitCommit:"c27b913fddd1a6c480c229191a087698aa92f0b1", GitTreeState:"clean", BuildDate:"2019-02-28T13:30:26Z", GoVersion:"go1.11.5", Compiler:"gc", Platform:"linux/amd64"}
- 需求
把一台NFS动态存储迁移至另外一台服务器
原始主机IP地址和数据 192.168.3.63 /ifs/kubernetes/
目标主机IP地址和数据 192.168.3.64 /ifs/kubernetes/ - 迁移步骤
前提:已经安装好NFS并配置和原始配置一致
迁移数据
/usr/bin/rsync -avzP -e "ssh -p 22" /ifs/kubernetes/ [email protected]:/ifs/kubernetes/
修改动态存储NFS配置文件
# kubectl edit deployment nfs-client-provisioner
测试yaml文件
创建pvc
# cat test-claim.yaml
apiVersion: v1
#创建pvc名称为test-claim
kind: PersistentVolumeClaim
metadata:
name: test-claim
spec:
#ReadWriteMany可读写并且可以被多个节点使用
#ReadWriteOnce只能被一个节点使用
#ReadOnlyMany可以被多个节点读取
accessModes:
- ReadWriteMany
#对应的storageClass名
storageClassName: "managed-nfs-storage"
#定义动态分配存储空间大小为10M
resources:
requests:
storage: 10Mi
创建pod该pod在pvc创建一个文件SUCCESS
# cat test-pod.yaml
kind: Pod
apiVersion: v1
metadata:
name: test-pod
spec:
containers:
- name: test-pod
#image: busybox:1.24
image: busybox
command:
- "/bin/sh"
args:
- "-c"
- "touch /mnt/SUCCESS && exit 0 || exit 1"
volumeMounts:
- name: nfs-pvc
mountPath: "/mnt"
restartPolicy: "Never"
volumes:
- name: nfs-pvc
persistentVolumeClaim:
claimName: test-claim
创建另外一个pod挂载该文件至/mnt
# cat test-pod2.yaml
apiVersion: v1
kind: Pod
metadata:
name: test-pod2
spec:
containers:
- name: nginx
image: nginx
volumeMounts:
- name: nfs-pvc
mountPath: "/mnt"
volumes:
- name: nfs-pvc
persistentVolumeClaim:
claimName: test-claim
创建成功在新的服务器文件夹下可以看到创建对应的目录
# ls -lah /ifs/kubernetes/