It's appear that one of my cluster node (node7) can't load any cluster resources with error code "NSS /ErrorCode=20897"

and from google, i found that this error code complaint bout this node is not a cluster member and try to use shared volume. I just leave & join back to the cluster and lucky this node now able to load any cluster resources.

My question is, what could be the reason this node out of sudden not a member of the cluster? License? but it's ok. TimeSync? but time is sync with DS. is it bcoz of SBD partition?

Apreciate any explaination..