kubernetes实验挑战二（troubleshoot pv pvc ）

news2025/1/13 10:34:00

This 2-Node Kubernetes cluster is broken! Troubleshoot, fix the cluster issues and then deploy the objects according to the given architecture diagram to unlock our Image Gallery!!
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1、

kubeconfig = /root/.kube/config, User = ‘kubernetes-admin’ Cluster: Server Port = ‘6443’'.
Fix kube-apiserver. Make sure its running and healthy.
Master node: coredns deployment has image: ‘registry.k8s.io/coredns/coredns:v1.8.6’

首先查看错误提示：
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显示端口连接被拒绝，查看端口是否正常

由此可见端口错误，修改端口为6443

vim .kube/config
server:https://controlplane:6443

其次，查看apiserver日志，看错误在哪里
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根据日志提示，修改kube-apiserver.yml文件里的证书名称，之后重启kubelet即可

最后，查看coredns pod的状态

修改镜像地址

确认running

2、
Copy all images from the directory ‘/media’ on the controlplane node to ‘/web’ directory on node01

scp /media/* node01:/web/

3、

Create new PersistentVolume = ‘data-pv’
PersistentVolume = data-pv, accessModes = ‘ReadWriteMany’
PersistentVolume = data-pv, hostPath = ‘/web’
PersistentVolume = data-pv, storage = ‘1Gi’

apiVersion: v1
kind: PersistentVolume
metadata:
  name: data-pv
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteMany
  hostPath:
    path: "/web"

4、

Create new PersistentVolumeClaim = ‘data-pvc’
PersistentVolume = ‘data-pvc’, accessModes = ‘ReadWriteMany’
PersistentVolume = ‘data-pvc’, storage request = ‘1Gi’
PersistentVolume = ‘data-pvc’, volumeName = ‘data-pv’

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  volumeName: data-pv

5、

New Service, name: ‘gop-fs-service’
Service name: gop-fs-service, port: ‘8080’
Service name: gop-fs-service, targetPort: ‘8080’
Service name: gop-fs-service, NodePort: ‘31200’

apiVersion: v1
kind: Service
metadata:
  name: gop-fs-service
spec:
  type: NodePort
  selector:
    app.kubernetes.io/name: gop-fs-server
  ports:
    - protocol: TCP
      port: 8080
      targetPort: 8080
      nodePort: 31200

6、

Create a pod for file server, name: ‘gop-file-server’

pod: gop-file-server image: ‘kodekloud/fileserver’

pod: gop-file-server mountPath: ‘/web’

pod: gop-file-server volumeMount name: ‘data-store’

pod: gop-file-server persistent volume name: data-store

pod: gop-file-server persistent volume claim used: ‘data-pvc’

apiVersion: v1
kind: Pod
metadata:
  name: gop-file-server
spec:
  volumes:
    - name: data-store
      persistentVolumeClaim:
        claimName: data-pvc
  containers:
    - name: gop-file-server
      image: kodekloud/fileserver
      volumeMounts:
        - mountPath: "/web"
          name: data-store