Thanks to Marvin's suggestion we were able to determine the issue. One of the three servers in the moodle cluster had a bad netmask and so was not able to validate the CAS service tickets. Netmask has been corrected and the issue is resolved.
-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
