Health Check Commands: rok-disk-manager

Please refer to the following commands to perform a health check or investigation into the Rok Disk Manager (RDM).

1. Check the status of the RDM DaemonSet:

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

2. Check the  status of the RDM Pods:

$ kubectl get pods -n rok-system -l name=rok-disk-manager -o wide

3. Inspect the events on the RDM DaemonSet:

$ kubectl describe daemonset -n rok-system rok-disk-manager

4. Inspect the events of a specific RDM Pod:

$ kubectl describe pod -n rok-system rok-disk-manager-XYZ

5. Inspect the logs of a specific RDM Pod:

$ kubectl logs -n rok-system rok-disk-manager-XYZ -f

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

2022-03-09T16:03:27.937936+0000 rok-disk-manager pid=9/tid=9/pytid=140245501699520 
disk_setup:136 [INFO] Disk setup completed successfully

2022-03-09T16:03:27.938113+0000 rok-disk-manager pid=9/tid=9/pytid=140245501699520 
disk_setup:342 [INFO] Sleeping for 60 before re-running disk setup

Useful links

1. Rok Components
2. Rok installation guide
3. RDM user guide
4. rok-deploy task