动态PV配置

⚠️

Master 节点安装

新建 kubernetes 目录

cd /mnt/nfs
mkdir -p kubernetes

Helm 部署 PV

调整 nfs.server 和 nfs.path 配置

默认的 StorageClass 名称是 nfs-client

helm repo add nfs-subdir-external-provisioner https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner
helm repo update

 helm install -n kube-system nfs-client  nfs-subdir-external-provisioner/nfs-subdir-external-provisioner\
    --set nfs.server=192.168.88.1 \
    --set nfs.path=/nfs/kubernetes \
    --set storageClass.defaultClass=true \
    --set image.repository=ccr.ccs.tencentyun.com/jansora/nfs-subdir-external-provisioner \
    --set image.tag=v4.0.0 \

默认的镜像被墙了,

检测部署状态为 running

Master 节点执行

kubectl get pods -n kube-system | grep nfs-client

root@master:/mnt# kubectl get pods -n kube-system | grep nfs-client
nfs-client-nfs-subdir-external-provisioner-6f9ccc6df5-z2sml   1/1     Running   0          7m7s

创建通用 PVC 和测试 PVC

创建通用 100G 的 PVC

Master 节点执行

kubectl apply -f https://storage.qiniu.jansora.com/files/uPic/2023/05/12/nfs-pvc.yaml

nfs-pvc.yaml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: nfs-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 100Gi

创建测试 1M 的 PVC

Master 节点执行

kubectl apply -f https://storage.qiniu.jansora.com/files/uPic/2023/05/12/test-pvc.yaml

test-pvc.yaml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Mi

测试 PVC 的有效性

创建一个测试 Pod 指定上述的测试 PVC .

此 Pod 会在挂载的 NFS 目录下创建一个 SUCCESS 的文件

Master 节点执行

kubectl apply -f https://storage.qiniu.jansora.com/files/uPic/2023/05/12/test-pod.yaml

test-pod.yaml

kind: Pod
apiVersion: v1
metadata:
  name: test-pod
spec:
  containers:
    - name: test-pod
      image: busybox:latest
      command:
        - "/bin/sh"
      args:
        - "-c"
        - "touch /mnt/SUCCESS && exit 0 || exit 1"  #创建一个名称为"SUCCESS"的文件
      volumeMounts:
        - name: nfs-pvc
          mountPath: "/mnt"
  restartPolicy: "Never"
  volumes:
    - name: nfs-pvc
      persistentVolumeClaim:
        claimName: test-pvc

检查 nfs 共享存储中是否存在该文件

Master 节点执行

root@master:~# cd /mnt/nfs
root@master:/mnt/nfs# ls -l
total 24
-rw-r--r-- 1 root   root       13 May 11 14:22 a.txt
drwxrwxrwx 3 nobody nogroup  4096 May 12 06:36 kubernetes
drwx------ 2 root   root    16384 May 11 14:20 lost+found
root@master:/mnt/nfs# cd kubernetes/
root@master:/mnt/nfs/kubernetes# ls -l
total 8
drwxrwxrwx 2 nobody nogroup 4096 May 12 06:36 default-nfs-pvc-pvc-3597cad2-005b-4da2-b6bc-f69f9ccdb8c1
drwxrwxrwx 2 nobody nogroup 4096 May 12 07:11 default-test-pvc-pvc-4214a4a0-cc2a-41df-9251-9e08ed536e8b
root@master:/mnt/nfs/kubernetes# cd default-test-pvc-pvc-4214a4a0-cc2a-41df-9251-9e08ed536e8b/
root@master:/mnt/nfs/kubernetes/default-test-pvc-pvc-4214a4a0-cc2a-41df-9251-9e08ed536e8b# ls -l
total 0
-rw-r--r-- 1 nobody nogroup 0 May 12 07:11 SUCCESS

测试通过!!!

9. K8S 从节点加入 11. 部署 Nginx Ingress