XCA Availability Primary Dropped All APs

[Dustin_Willis]

Hey all,

Availability pair of E1120 units, running XCA 5.46.09.0008 in Active/Passive.  

Both units are accessible, and the availability shows in sync and working.  This config has been stable for about 3 years or so.  

The Primary unit suddenly dropped 100% (51) of the APs, showing all down and critical.  The backup unit picked them up, but I have no explanation for what happened and can't get it back.  The primary unit is pingable from anywhere I've tried on the network, and no network changes have occurred.  I've rebooted both units and a few APs, and restored a backup from last week just in case - no improvements.  They land on the same x465 switch stack, and no problems are indicated there. 

Does the controller hold a certificate that the AP would use to communicate which might have expired?  Didn't find one, but just grasping for things that could cause a systemic disconnect like this.  Ideas where to start?  

[Dustin_Willis]

Figured it out - I re-created the certificate on the LAN interface with the factory/default CA, and the APs started to reappear on the primary.  I never found a way to actually view or check that certificate for expiration.  Whatever happened, that fixed it.