I'm running CentOS 7 and I've tried this on Tomcat 7.0.55 and 8.0.12, both with the same results. This also works perfectly fine in a production environment with 7.0.55.
I'm running CAS and without clustering Tomcat, the login page works perfectly. When I attempt to cluster Tomcat, I have to hit the login page twice. The first time I log in, it simply clears the fields and goes back to the login page. The second time I log in it works. I'm posting to this list because I'm pretty sure it's something I'm missing with Tomcat config, not CAS the application as it works just fine in production. I have tried this with a fully configured cluster section in server.xml and with just uncommenting the default cluster tag. It happens either way. If I don't have a cluster section at all in server.xml, CAS works as it should. The logs aren't showing any errors or anything that seems useful to this problem. I have run out of things to try and it works fine on 3 out of 4 of the Tomcat servers. I have gone so far as to completely wipe out this one server and build it back from scratch. Never-the-less, the problem remains. I've run out of things to try and would appreciate any suggestions anyone may have. Thanks, Peter -- Peter Kirby System and Database Administrator @ Harding University
