Health Check Commands: rok-kmod

Please refer to the following commands to perform a health check or investigation into Rok kmod ("Kernel Module").

1.Check the status of the Rok kmod DaemonSet:

$ kubectl get daemonset -n rok-system rok-disk-manager -o wide

Inspect the events on the Rok kmod DaemonSet:

$ kubectl describe daemonset -n rok-system rok-kmod

Check the status of the Rok kmod Pods:

$ kubectl get pods -n rok-system -l app=rok-kmod -o wide

Inspect the events and logs of a specific Rok kmod Pod:

$ kubectl describe pod -n rok-system rok-kmod-XYZ

$ kubectl logs -n rok-system rok-kmod-XYZ -f

After successful deployment, and under normal operation, every RDM Pod should emit log messages similar to the following ones after deployment:

2022-03-09T13:21:53.517563+0000 rok-kmod pid=9/tid=9/pytid=140015886546688 base:246 
[INFO] Successfully prepared kernel modules

2022-03-09T13:21:53.517563+0000 rok-kmod pid=9/tid=9/pytid=140015886546688 base:246 
[INFO] Successfully installed modules

After successful deployment, and under normal operation, every RDM Pod should emit log messages similar to the following ones after restart:

2022-03-09T13:21:53.517563+0000 rok-kmod pid=9/tid=9/pytid=140015886546688 base:246 
[INFO] Successfully prepared kernel modules

2022-03-09T13:21:53.517938+0000 rok-kmod pid=9/tid=9/pytid=140015886546688 cli:193 
[WARNING] No kernel modules to install

Useful links

1. Rok Components

2. Rok installation guide

3. Rok kmod user guide

4. rok-deploy task