[kubernetes]-挂载nfs出错排查

待我称王封你为后i 2023-07-09 15:26 2阅读 0赞

##### kubect describe pod 提示下面的日志 #####

Warning  FailedMount  96s    kubelet, k8s-op-n01  Unable to mount volumes for pod "zbox-dp-799c8c4f57-jhk8p_default(fc77befc-597e-11ea-ba61-00163e0d21c0)": timeout expired waiting for volumes to attach or mount for pod "default"/"zbox-dp-799c8c4f57-jhk8p". list of unmounted volumes=[zbox-data]. list of unattached volumes=[zbox-data default-token-w742g]
      Warning  FailedMount  94s    kubelet, k8s-op-n01  MountVolume.SetUp failed for volume "nfs-pv" : mount failed: exit status 32
    Mounting command: systemd-run
    Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/fc77befc-597e-11ea-ba61-00163e0d21c0/volumes/kubernetes.io~nfs/nfs-pv --scope -- mount -t nfs 192.168.13.212:/opt/zbox /var/lib/kubelet/pods/fc77befc-597e-11ea-ba61-00163e0d21c0/volumes/kubernetes.io~nfs/nfs-pv
    Output: Running scope as unit run-17269.scope.
    mount.nfs: Connection refused

##### 这里以为是镜像的问题 没考虑到nfs server的问题 #####

启动一个基础镜像并测试命令

yum install -y nfs-utils
    systemctl enable rpcbind.service
    systemctl start rpcbind.service

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发现提示D-Bus 不允许启动systemctl

查了资料发现 官方提供的镜像都不允许使用systemctl 也算是意外收获吧

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##### 使用下面的方法 启动尝试 #####

docker run -itd   --name=sys-test-2 --privileged -e "container=docker"   harbor.aircourses.com/kubernetes/jdk-1.8.0_161:v1  /usr/sbin/init

systemctl的确可以了

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但是问题还是存在

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后面直接在服务器测试挂载nfs 也不行。

##### 排查之后确认 #####

nfs 卸载的时候 出现busy 我直接重启了nfs-server ，然后client端上目录没有卸载，而且无法cd进去，可能是这个问题

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##### 重载一下再启动 #####

# 重载一下再启动
    systemctl daemon-reload
    systemctl restart rpcbind.socket
    systemctl start nfs

可以了

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