I am trying to move an old Tomcat application to a new one. I am new to Tomcat administration. This application has been around for a long time but due to resources, it hasn't been keeping up with Tomcat releases. However, it's becoming clear that it's time to get more up to date to take advantage of the features in the newer Tomcat (like a newer JSP standard, clustering, improved security etc) so I've been tasked with getting our old software running on newer servers.
Old: Tomcat 3.2.4 Apache web server 1.3.34 + ssl (using Apache SSL) and mod_jk Java 1.4.2. Redhat 7.0 Release 1 New: Tomcat 6.0.16 Apache web server 2.2.8 (using mod_ssl obviously) and mod_jk Java 1.6.0_06 Redhat 5Server Release 5.1.0.2 (64-bit) The class files are still being compiled with Java 1.4.2 and it's still using the old libraries. I'm dropping the webapp into the webapps directory. Non-servlet/jsp files are being served by Apache web server. I picked up a copy of "Tomcat: The Definitive Guide" 2nd Edition by Brittain & Darwin and have found it very helpful. I've mostly got it working but there is some oddness with sessions at login time that I haven't quite figured out. It may also be an Apache web server problem. I'm not sure. I think it may have to do with the transition between non-SSL to SSL when I login. Apache has a main host on myHost.myDomain:80 and a VirtualHost for myHost.myDomain.com:443. I think that might be part of my problem. For some reason I end up having to login twice because the session doesn't get recognized initially (though the second time, it tells me I'm already logged in). After that, the app works fine but the double login thing is annoying. I'm not sure if it's my app's fault or my configuration. BTW, this app is huge and has been around for about 8 years but I've only been working with it for about 5 months. Does anyone have any pointers to which configuration directives I should be looking for? When Apache switches you from its main host to one of its virtual hosts, does it change the session id or is that completely unrelated to the session id in Tomcat?
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