Volume empty about csi-driver

[szuro]

Had the same issue using microk8s.
It seems to be solved after providing the following values for the helm chart:

$ cat csi-values.yaml
app:
  kubeletRootDir: "/var/snap/microk8s/common/var/lib/kubelet"

Then just install with:
helm upgrade -i -n cert-manager -f csi-values.yaml cert-manager-csi-driver jetstack/cert-manager-csi-driver --wait

[manelio]

Same problem here. I'm using microk8s, Kubernetes version 1.26:

kubectl get csidrivers

NAME                  ATTACHREQUIRED   PODINFOONMOUNT   STORAGECAPACITY   TOKENREQUESTS   REQUIRESREPUBLISH   MODES       AGE
csi.cert-manager.io   true             true             false             <unset>         false               Ephemeral   50m

# Deploy example app

kubect apply -f https://raw.githubusercontent.com/cert-manager/csi-driver/main/deploy/example/example-app.yaml

kubectl get pod -n sandbox

NAME                          READY   STATUS    RESTARTS   AGE
my-csi-app-5c569977c8-b6dx4   1/1     Running   0          4m45s
my-csi-app-5c569977c8-c84kt   1/1     Running   0          4m45s
my-csi-app-5c569977c8-f6nrv   1/1     Running   0          4m45s
my-csi-app-5c569977c8-mn78w   1/1     Running   0          4m45s
my-csi-app-5c569977c8-tjwbl   1/1     Running   0          4m45s

# Directory /tls exists, but is empty

kubectl exec -n sandbox --stdin --tty $(kubectl get pod -n sandbox -l app=my-csi-app -o custom-columns=:metadata.name | tail -n1) -- ls -la /tls

total 8
drwxr-xr-x    2 root     root          4096 Jan 28 16:07 .
drwxr-xr-x    1 root     root          4096 Jan 28 16:07 ..

Edit: csi-driver log shows concerning messages:

I0201 10:23:11.880983       1 nodeserver.go:83] driver "msg"="Registered new volume with storage backend" "pod_name"="app-5dfb558dbb-rk8xv"
I0201 10:23:11.881091       1 manager.go:302] manager "msg"="Processing issuance" "volume_id"="csi-795b25d19675b007b4d71802bd485a92369c9437ce3d9224511bf5338f5ef143"
I0201 10:23:12.209743       1 manager.go:340] manager "msg"="Created new CertificateRequest resource" "volume_id"="csi-795b25d19675b007b4d71802bd485a92369c9437ce3d9224511bf5338f5ef143"
I0201 10:23:13.210873       1 nodeserver.go:100] driver "msg"="Volume registered for management" "pod_name"="app-5dfb558dbb-rk8xv"
I0201 10:23:13.210891       1 nodeserver.go:113] driver "msg"="Ensuring data directory for volume is mounted into pod..." "pod_name"="app-5dfb558dbb-rk8xv"
I0201 10:23:13.211448       1 nodeserver.go:132] driver "msg"="Bind mounting data directory to the pod's mount namespace" "pod_name"="app-5dfb558dbb-rk8xv"
I0201 10:23:13.213119       1 nodeserver.go:138] driver "msg"="Volume successfully provisioned and mounted" "pod_name"="app-5dfb558dbb-rk8xv"
I0201 10:23:34.735988       1 nodeserver.go:159] driver "msg"="Stopped management of volume" "target_path"="/var/snap/microk8s/common/var/lib/kubelet/pods/39e87081-472e-4f0c-a58c-74cf63ee13bd/volumes/kubernetes.io~csi/tls/mount" "volume_id"="csi-5bb5586064040ada5584fb6348169a07a0cec94e4007d2eba9d16ccca41779b8"
E0201 10:23:34.736098       1 server.go:109] driver "msg"="failed processing request" "error"="file does not exist" "request"={} "rpc_method"="/csi.v1.Node/NodeUnpublishVolume"
I0201 10:23:35.239902       1 nodeserver.go:159] driver "msg"="Stopped management of volume" "target_path"="/var/snap/microk8s/common/var/lib/kubelet/pods/39e87081-472e-4f0c-a58c-74cf63ee13bd/volumes/kubernetes.io~csi/tls/mount" "volume_id"="csi-5bb5586064040ada5584fb6348169a07a0cec94e4007d2eba9d16ccca41779b8"