WFC failover

Question

WFC failover

Hram Admin 80

Hello!

I have a two-node WFC which is used for the AlwaysON AG.

I'm used to monitor cluster failovers by 1641 events from FailoverClustering source: it usually displays something like

"Cluster role "Role1" is moving from NODE1 to NODE2"

...but in my new cluster (roles = AlwaysON availability groups with asynchronus-commit mode/manual failover) I see this:

02-1

It seems to be correlated with this event: 02-2

First I thought that it is this change -from "RESOLVING_NORMAL to SECONDARY_NORMAL" - that triggers the changes in WFC but it's obviously the other way around: the change in WFC is leading to change in AG - but what does mean "Role AG... is moving from NODE1 to NODE2" ???

Thank you in advance,
Michael

2 answers

Your answer

Answer 1

Hello,

Thank you for posting in Q&A forum.

Event ID 19406 is caused when the replica state changes. Because the 19406 class is generic and because there could be a variety of reasons for this error, I recommend that you refer to the following link to further troubleshoot and determine the cause.

https://learn.microsoft.com/en-us/sql/database-engine/availability-groups/windows/always-on-extended-events?view=sql-server-ver16

https://learn.microsoft.com/en-us/troubleshoot/windows-server/high-availability/troubleshoot-unexpected-cluster-failover-issue?source=recommendations

I hope the information above is helpful.

Best regards

Zunhui

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.

Answer 2

Hram Admin 80

Zunhui Han, thank you for the links, but the articles to which they refer contain general recommendations on AlwaysON troubleshooting. I haven't seen the explanation so far of the process when the cluster role is moving from host1 to host1 - I just can't understand how it's possible... :(

Regards,
Michael

Share via

WFC failover

2 answers

Your answer