I'm attempting to install grails from the Jenkins Grails Plugin (1.6.3). The plugin seemed to install just fine. When I try to install a version of grails, it isn't working as I would expect.
When I'm on the "Manage Jenkins"->"Configure System" screen, the Grails Plugin doesn't have a drop-down of grails versions to choose from when I attempt to install from mirrors. Instead I see a text box that I can type in (see my attached screen shot 'grails_plugin_no_installer.png', where the red arrow is pointing).
As you can see from the screen shot, I also tried to install it directly from a binary archive.
In both cases, after filling out the info as you see it and pressing the 'save' button. Then when I run my job that uses the grail build step (attached screen shot 'build_with_grails_war.png'), I get the error message in attached screen shot 'build_failed.png'.

My first guess was that the server didn't have access to the internet - which might explain why it couldn't find any mirrors to display - but telnet and curl are able to hit internet sights just fine.

I have another instance of Jenkins (also Redhat) where an older version of the Grails Plugin works just fine (1.5). The only notable difference between those instances of Jenkins is that the one that does not work has CloudBees installed, and the one where it works does not have CloudBees installed.

I'm hoping that I'm missing something simple here. Please help me identify the issue and get a version of grails installed on this server. What other info do you need to help debug this?

Thank you.