On Wed, Oct 9, 2013 at 11:04 PM, Saurabh <[email protected]>wrote:
> Hi everybody, > Hi Saurabh, > I have Installed juju on my ubuntu 12.04 machine in a local environment. > I am writing a charm for an application development server, but It could > not get java. > I have written the install hook to install open_jdk via apt. > Java gets installed, when I manually chroot to the location of this > machine (chroot /var/lib/lxc/saurabh-local-machine-1/rootfs) and do a > "which java" command It says "/usr/bin/java". But when I do "java -version" > it says "*java: error while loading shared libraries: libjli.so: cannot > open shared object file: No such file or directory* " > You probably don't want to chroot into the filesystem. If you want to run java from the context of the charm, then you can run "juju ssh <unit>" to get into the machine where the charm is installed. For example, I just bootstrapped a local environment and deployed apache2. I now have the unit "apache2/0" running on machine 1. I can log into that machine by doing "juju ssh apache2/0". In your example, you'll "juju ssh $servicename/0", and then you should be able to execute java. On googling a bit I found that I will have to mount proc in the chrooted > environment. I tried to mount proc using the install hook by adding a line > " *mount -t proc none /proc*" but it could not mount /proc as in logs it > says proc already mounted still the application could not get java. > When I manually mount the proc in the chrooted environment and start the > app server it runs fine and java also starts working. > > So my question is how to mount proc using a hook in the chrooted > environment. > If any body has any idea please help. > The charm does not run in a chroot, which is why you get the error. The charm runs in an LXC container, which already has a /proc. Consider it as a lightweight VM. You can read a little more about LXC here, if you're interested: http://lxc.sourceforge.net/ Hope this helps. Cheers, Andrew > Here is the log of that server unit. > > > > 2013-10-09 14:20:56 INFO juju.worker.uniter uniter.go:369 committing > "install" hook > 2013-10-09 14:20:56 INFO juju.worker.uniter uniter.go:387 committed > "install" hook > 2013-10-09 14:20:56 DEBUG juju.worker.uniter modes.go:410 ModeContinue > exiting > 2013-10-09 14:20:56 INFO juju.worker.uniter modes.go:408 ModeContinue > starting > 2013-10-09 14:20:56 INFO juju.worker.uniter modes.go:79 continuing after > "install" hook > 2013-10-09 14:20:56 DEBUG juju.worker.uniter modes.go:410 ModeContinue > exiting > 2013-10-09 14:20:56 INFO juju.worker.uniter modes.go:408 ModeConfigChanged > starting > 2013-10-09 14:20:56 DEBUG juju.worker.uniter.filter filter.go:407 > discarded config event > 2013-10-09 14:20:56 INFO juju.worker.uniter uniter.go:354 running > "config-changed" hook > 2013-10-09 14:20:56 INFO juju.worker.uniter context.go:203 skipped > "config-changed" hook (not implemented) > 2013-10-09 14:20:56 INFO juju.worker.uniter uniter.go:362 ran > "config-changed" hook > 2013-10-09 14:20:56 INFO juju.worker.uniter uniter.go:369 committing > "config-changed" hook > 2013-10-09 14:20:57 INFO juju.worker.uniter uniter.go:387 committed > "config-changed" hook > 2013-10-09 14:20:57 DEBUG juju.worker.uniter modes.go:410 > ModeConfigChanged exiting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:408 ModeContinue > starting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:79 continuing after > "config-changed" hook > 2013-10-09 14:20:57 DEBUG juju.worker.uniter modes.go:410 ModeContinue > exiting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:408 ModeStarting > starting > 2013-10-09 14:20:57 INFO juju.worker.uniter uniter.go:354 running "start" > hook > *2013-10-09 14:20:57 INFO juju.worker.uniter context.go:234 "HOOK mount: > proc already mounted"* > 2013-10-09 14:20:57 INFO juju.worker.uniter uniter.go:362 ran "start" hook > 2013-10-09 14:20:57 INFO juju.worker.uniter uniter.go:369 committing > "start" hook > 2013-10-09 14:20:57 INFO juju.worker.uniter uniter.go:387 committed > "start" hook > 2013-10-09 14:20:57 DEBUG juju.worker.uniter modes.go:410 ModeStarting > exiting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:408 ModeContinue > starting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:79 continuing after > "start" hook > 2013-10-09 14:20:57 DEBUG juju.worker.uniter modes.go:410 ModeContinue > exiting > 2013-10-09 14:20:57 INFO juju.worker.uniter modes.go:408 ModeAbide starting > 2013-10-09 14:20:57 DEBUG juju.worker.uniter.filter filter.go:382 want > forced upgrade false > 2013-10-09 14:20:57 DEBUG juju.worker.uniter.filter filter.go:486 no new > charm event > > > > Thanks > saurabh. > > -- > Juju mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/juju > >
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