在将 GKE 集群节点的镜像类型从 container-vm 迁移到 cos 之后,似乎不再可能为 pod 挂载 NFS 卷。
问题似乎缺少 NFS 客户端库,因为命令行中的挂载命令在我尝试的所有 COS 版本上都失败(cos-stable-58-9334-62-0、cos-beta-59-9460-20-0、cos -dev-60-9540-0-0)。
sudo mount -t nfs mynfsserver:/myshare /mnt
失败了
mount: wrong fs type, bad option, bad superblock on mynfsserver:/myshare,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
但这与此处列出的支持的卷类型相矛盾: https ://cloud.google.com/container-engine/docs/node-image-migration#storage_driver_support
在 pod 中挂载 NFS 卷适用于具有 image-typecontainer-vm
但不适用于cos
.
随着 cos 我收到以下消息kubectl describe pod
:
MountVolume.SetUp failed for volume "kubernetes.io/nfs/b6e6cf44-41e7-11e7-8b00-42010a840079-nfs-mandant1" (spec.Name: "nfs-mandant1") pod "b6e6cf44-41e7-11e7-8b00-42010a840079" (UID: "b6e6cf44-41e7-11e7-8b00-42010a840079") with: mount failed: exit status 1
Mounting command: /home/kubernetes/containerized_mounter/mounter
Mounting arguments: singlefs-1-vm:/data/mandant1 /var/lib/kubelet/pods/b6e6cf44-41e7-11e7-8b00-42010a840079/volumes/kubernetes.io~nfs/nfs-mandant1 nfs []
Output: Mount failed: Mount failed: exit status 32
Mounting command: chroot
Mounting arguments: [/home/kubernetes/containerized_mounter/rootfs mount -t nfs singlefs-1-vm:/data/mandant1 /var/lib/kubelet/pods/b6e6cf44-41e7-11e7-8b00-42010a840079/volumes/kubernetes.io~nfs/nfs-mandant1]
Output: mount.nfs: Failed to resolve server singlefs-1-vm: Temporary failure in name resolution