Unable to install kubernetes csi-rbdplugin (rook-ceph) due to module nbd not found

[jikunchong]

embedded board: Radxa Rock 5b system image: rock-5b-ubuntu-focal-server-arm64-20230201-1200-gpt.img.xz ubuntu server version: 20.04.6

step docs: https://kubesphere.cloud/docs/ksv/02-quick-start/01-install-ksv-in-single-node-mode/

rock@rock-5b:~$ sudo su
./install.sh -a --ratio 3
# ...
kubectl get pod -A

NAMESPACE           NAME                                                READY   STATUS             RESTARTS   AGE
kube-system         coredns-7448499f4d-85mp6                            1/1     Running            0          70m
kube-system         kube-multus-ds-prtmn                                1/1     Running            0          70m
kube-system         kube-ovn-cni-qqf2c                                  1/1     Running            0          70m
kube-system         kube-ovn-controller-94c9596c4-brd44                 1/1     Running            0          70m
kube-system         kube-ovn-monitor-7c98d98457-pzsfg                   1/1     Running            0          70m
kube-system         kube-ovn-pinger-ksjb4                               1/1     Running            0          69m
kube-system         ovn-central-668ff5988f-j8fhx                        1/1     Running            0          70m
kube-system         ovs-ovn-cmr4c                                       1/1     Running            0          70m
kubekey-system      kubekey-controller-manager-9b55dbfd5-j9d6b          2/2     Running            0          70m
kubesphere-system   ks-installer-5cbb65bdf5-c45jj                       1/1     Running            0          70m
kubesphere-system   minio-7f687756bb-fvh5t                              0/1     Pending            0          65m
rook-ceph           csi-rbdplugin-254f7                                 2/3     CrashLoopBackOff   17         66m
rook-ceph           csi-rbdplugin-provisioner-7dfb48857f-88bqm          6/6     Running            0          66m
rook-ceph           rook-ceph-crashcollector-rock-5b-66c67c6946-hdp2g   1/1     Running            0          64m
rook-ceph           rook-ceph-mgr-a-744d5bbb45-hm96k                    1/1     Running            0          64m
rook-ceph           rook-ceph-mon-a-f548555b4-6kfhh                     1/1     Running            0          65m
rook-ceph           rook-ceph-operator-5fdc669785-9nszp                 1/1     Running            0          67m
rook-ceph           rook-ceph-osd-0-7c76d846d5-x9v7m                    0/1     CrashLoopBackOff   16         62m
rook-ceph           rook-ceph-osd-prepare-rock-5b-7xcms                 0/1     Completed          0          59m
rook-ceph           rook-ceph-tools-6c55fbd449-4j496                    1/1     Running            0          67m
rook-ceph           rook-discover-vhqbz                                 1/1     Running            0          66m
rook-ceph           snapshot-controller-0                               1/1     Running            0          67m

kubectl logs -n rook-ceph csi-rbdplugin-254f7 csi-rbdplugin

W0706 08:05:02.918278   40415 rbd_attach.go:209] rbd-nbd: nbd modprobe failed with error an error (exit status 1) occurred while running modprobe args: [nbd]
E0706 08:05:03.002118   40415 rbd_util.go:241] modprobe failed: an error (exit status 1) occurred while running modprobe args: [rbd]
F0706 08:05:03.002490   40415 driver.go:148] an error (exit status 1) occurred while running modprobe args: [rbd]
goroutine 1 [running]:
k8s.io/klog/v2.stacks(0x1)
        /go/src/github.com/ceph/ceph-csi/vendor/k8s.io/klog/v2/klog.go:1038 +0xac
# ...

modprobe nbd

modprobe: FATAL: Module nbd not found in directory /lib/modules/5.10.110-37-rockchip-g74457be0716d

[jikunchong]

@opsiff @RadxaStephen please add modprobe nbd, tks

[jikunchong]

tks. When can I obtain kernel updates?

[jikunchong]

@opsiff Can you help me build a kernel image? Our team is waiting for it to be used to install and use CEPH storage services on Kubernetes, please.

embedded board: Radxa Rock 5b system image: rock-5b_ubuntu_jammy_cli_b36.img.xz

[opsiff]

@opsiff Can you help me build a kernel image? Our team is waiting for it to be used to install and use CEPH storage services on Kubernetes, please.

embedded board: Radxa Rock 5b system image: rock-5b_ubuntu_jammy_cli_b36.img.xz

Emmm,I think that you need to contact with radxa officals.

[jikunchong]

I have found the official document. Let me give it a try first.

https://wiki.radxa.com/Rock5/guide/build-kernel-on-5b

[jikunchong]

I have successfully built the kernel and installed rook-ceph on Kubernetes. Looking forward to providing an official image that supports the NBD module in the future.