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ViewsKubernetes - cannot have Windows path mounted on Azure File Share (Linux mounting works properly )
Firstly I succesfully mounted, my Linux path on Pod. I used azure file share and mounted folders appear on File Share.
volumeMounts:
- name: ads-filesharevolume
mountPath: /opt/front/arena/host
volumes:
- name: ads-filesharevolume
azureFile:
secretName: fa-fileshare-secret
shareName: faselectaksshare
readOnly: false
Now on File Share I added one subfolder "windows" for mounting, in logs it mentions it is being mounted properly but I do not have anything mounted (folders and files do not appear on mounted share like it is the case for Linux)
args: [ "-license_file", "C:/Host/dat/license.dat",
"-key_file", "C:/Host/dat/license.key"]
volumeMounts:
- name: ads-win-filesharevolume
mountPath: "C:\\host"
volumes:
- name: ads-win-filesharevolume
azureFile:
secretName: fa-fileshare-secret
shareName: faselectaksshare\windows
readOnly: false
For mountPath I tried with: C:\\host and C:/host and /c/host
Also for shareName I initially tried with faselectaksshare/windows but it threw an exception.
In Pod describe I can see that everything seems OK, but my expected folders from C:/host do not appear in my Azure File Share path in windows subfolder. I receive similar output for all other cases as well.
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-nx49r (ro)
C:/host from ads-win-filesharevolume (rw)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
ads-win-filesharevolume:
Type: AzureFile (an Azure File Service mount on the host and bind mount to the pod)
SecretName: fa-fileshare-secret
ShareName: faselectaksshare\windows
ReadOnly: false
Please help! Thanks
UPDATE: I also tried this approach with subPath and again I do not get any folders mounted. Also I do not get any error in log or in describe pod command
volumeMounts:
- name: ads-filesharevolume
mountPath: /host
subPath: windows
volumes:
- name: ads-filesharevolume
azureFile:
secretName: fa-fileshare-secret
shareName: faselectaksshare
readOnly: false
3 answers
Answer question0
According to the following thread, wsl2 doesn't yet support hostPath volumes.
Thread Source: https://github.com/docker/for-win/issues/5325 Look at this comment: https://github.com/docker/for-win/issues/5325#issuecomment-570683131
Try changing this line
# For "C://host"
mountPath: /run/desktop/mnt/host/c/host
0
Both Windows and Linux containers run at the same time:
Mount for Linux:
volumeMounts:
- name: azure
mountPath: /mnt/azure
volumes:
- name: azure
azureFile:
shareName: aksshare/linux
secretName: azure-secret
Mount for Windows:
volumeMounts:
- name: azure
mountPath: "C:\\fileshare"
volumes:
- name: azure
azureFile:
shareName: aksshare\windows
secretName: azure-secret
And the files that exist in each subfolder of the file share do not affect other ones.
0
kubelet is supposed to mount the Azure File Share into the Container
It uses https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/mount-utils/mount_windows.go and https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/azure_file/azure_file.go
It uses SMB Mapping and then mklink to mount Azure File Share into the Container
Please start kubelet in Windows Node where the Pod is running and the Azure File Share is supposed to be mounted with --v 4 Flag so we get to see debug messages in kubelet log when it tries to mount Azure File Share into the Container. Then please provide the messages in kubelet log. You should see below messages from https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/mount-utils/mount_windows.go
klog.V(3).Infof("mounting source (%q), target (%q), with options (%q)", source, target, sanitizedOptionsForLogging)
klog.V(4).Infof("mount options(%q) source:%q, target:%q, fstype:%q, begin to mount",
sanitizedOptionsForLogging, source, target, fstype)
klog.Warningf("SMB Mapping(%s) returned with error(%v), output(%s)", source, err, string(output))
klog.V(2).Infof("SMB Mapping(%s) already exists while it's not valid, return error: %v, now begin to remove and remount", source, err)
klog.V(2).Infof("SMB Mapping(%s) already exists and is still valid, skip error(%v)", source, err)
klog.Errorf("mklink failed: %v, source(%q) target(%q) output: %q", err, mklinkSource, target, string(output))
klog.V(2).Infof("mklink source(%q) on target(%q) successfully, output: %q", mklinkSource, target, string(output))