Node Raiddegraded

NodeRAIDDegraded #

Meaning #

This alert is triggered when a node has a storage configuration with RAID array, and the array is reporting as being in a degraded state due to one or more disk failures.

Impact #

The affected node could go offline at any moment if the RAID array fully fails due to further issues with disks.

Diagnosis #

You can open a shell on the node and use the standard Linux utilities to diagnose the issue, but you may need to install additional software in the debug container:

$ NODE_NAME='<value of instance label from alert>'

$ oc debug "node/$NODE_NAME"
$ cat /proc/mdstat

Mitigation #

See the Red Hat Enterprise Linux documentation for potential steps.