Thank you Marvin for hitting me upside the head with the obvious. After checking the logs it appears that one of the three servers isn't able to connect to our CAS server via HTTPS. I've passed the issue on to our network folks and I'll update everyone with the results.
-Andrew On Jan 10, 2012, at 10:24 AM, Marvin Addison wrote: >> We've been reliably running a single server moodle instance with CAS enabled >> for over a year. Recently we've moved to a cluster of Moodle servers and >> sporadically users are seeing a "CAS Authentication failed!" message. > > Do phpCAS debug logs provide any insight? I'm assuming this is a > ticket validation failure, but the exact cause might provide a > starting point for further investigation. > > M > > -- > You are currently subscribed to [email protected] as: > [email protected] > To unsubscribe, change settings or access archives, see > http://www.ja-sig.org/wiki/display/JSG/cas-user > -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-user
