第一步，选择2台机器 做高可用
第一台：10.1.234.101
第二台：10.1.234.102
vip : 10.1.234.100
[root@k8s-master1 nfs]# ping 10.1.234.100 PING 10.1.234.100 (10.1.234.100) 56(84) bytes of data. 64 bytes from 10.1.234.100: icmp_seq=1 ttl=64 time=0.358 ms 64 bytes from 10.1.234.100: icmp_seq=2 ttl=64 time=0.361 msnfs deployment ip 地址用 vip
[root@k8s-master1 nfs]# cat deployment.yaml apiVersion: v1 kind: ServiceAccount metadata: name: nfs-client-provisioner --- kind: Deployment apiVersion: apps/v1 metadata: name: nfs-client-provisioner spec: replicas: 1 strategy: type: Recreate selector: matchLabels: app: nfs-client-provisioner template: metadata: labels: app: nfs-client-provisioner spec: serviceAccountName: nfs-client-provisioner containers: - name: nfs-client-provisioner image: quay.io/external_storage/nfs-client-provisioner:latest volumeMounts: - name: nfs-client-root mountPath: /persistentvolumes env: - name: PROVISIONER_NAME value: fuseim.pri/ifs - name: NFS_SERVER value: 10.1.234.100 - name: NFS_PATH value: /ifs/kubernetes volumes: - name: nfs-client-root nfs: server: 10.1.234.100 path: /ifs/kubernetes部署应用
[root@k8s-master1 nfs]# kubectl get pods,pvc -n edu NAME READY STATUS RESTARTS AGE pod/wenruo-crm-64dbc5d8c8-5q9pq 1/1 Running 0 24m NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE persistentvolumeclaim/wenruo-crm-pvc Bound pvc-938bcb8a-c431-4b09-80f7-7cabe70a195a 5Gi RWX managed-nfs-storage 24m [root@k8s-master1 configmap_nginx]# curl wenruo-crm.rpdns.com 10
现在一切正常：
关掉：10.1.234.101
再次访问就会卡在这里
[root@k8s-master1 configmap_nginx]# curl wenruo-crm.rpdns.com curl: (52) Empty reply from server再次访问 404，503
[root@k8s-master1 configmap_nginx]# curl wenruo-crm.rpdns.com <html> <head><title>404 Not Found</title></head> <body> <center><h1>404 Not Found</h1></center> <hr><center>nginx/1.17.9</center> </body> </html>[root@k8s-master1 configmap_nginx]# curl wenruo-crm.rpdns.com <html> <head><title>503 Service Temporarily Unavailable</title></head> <body> <center><h1>503 Service Temporarily Unavailable</h1></center> <hr><center>nginx/1.15.5</center> </body> </html>
我们再看看 vip,正常通信
[root@k8s-master1 configmap_nginx]# ping 10.1.234.100 PING 10.1.234.100 (10.1.234.100) 56(84) bytes of data. 64 bytes from 10.1.234.100: icmp_seq=1 ttl=64 time=0.459 ms 64 bytes from 10.1.234.100: icmp_seq=2 ttl=64 time=0.244 ms10.1.234.102 网页文件是否同步，确认已同步
[root@localhost kubernetes]# cat /ifs/kubernetes/edu-wenruo-crm-pvc-pvc-938bcb8a-c431-4b09-80f7-7cabe70a195a/index.html 10现在我在启动 10.1.234.101
由于我配置的10.1.234.101 keepalive 是master 起来后会抢占 vip
再次测试，已恢复
[root@k8s-master1 configmap_nginx]# curl wenruo-crm.rpdns.com 10结论： nfs keepalive 对k8s 无效
