This is my documentation of recent changes to the way the TEI Jenkins Continuous Integration Server VMs are configured.
The new VM whose machine name is teijenkins1204 is now running Jenkins on port 8080, and also Apache proxying Jenkins on port 80. JA (sysadmin) has pointed the DNS entry for teijenkins.hcmc.uvic.ca at this machine, so the Jenkins instance is accessible on port 80 and 8080 there. The dual access allows for normal access to Jenkins on port 80 (convenient), but also for a situation in which we might want to put up a temporary warning page on port 80 while solving a problem with Jenkins accessed through 8080, then restore the proxy setup. I followed these instructions to set up proxying.
That machine is also running denyhosts.
The old machine hostname has been changed to teijenkinsdev, and JA has pointed teijenkinsdev.hcmc.uvic.ca at it. The Jenkins service has been disabled on this machine using sysv-rc-conf. When I ran that tool, it showed X characters for the jenkins service on run levels 2, 3, 4 and 5. I removed all of them; to re-enable the service, run it again and replace them. In the meantime, you can run Jenkins manually using
sudo /etc/init.d/jenkins start. The plan is to reprovision that machine with more RAM and disk space, and then build it up with Ubuntu 12.10 to test and tweak the build script; doing this for every Ubuntu release will make it less messy to migrate to the next LTS when it comes out.