How to start jenkins?

Question

I installed jenkins via sudo apt-get install jenkins. However, it doesn't start up. Tried to start it manually using sudo /etc/init.d/jenkins start. But it shows this message when I try to start it that way:

start: Rejected send message, 1 matched rules; type="method_call", sender=":1.67" (uid=1000 pid=7970 comm="start jenkins ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")"

init.d method just says starting, but never starts...

How do I fix this and get jenkins to start up?

Solution 1

Check the jenkins upstart configuration file /etc/init/jenkins.conf.

Verify that the path for JAVA_HOME is correct. On a fresh install, it may look like /usr/lib/jvm/java-default (or default-java), however, if you've used apt-get to install the java 6 jre, the directory is actually /usr/lib/jvm/java-6-sun

Solution 2

If you change JAVA_HOME to /usr in /etc/init/jenkins.conf then you can use whichever Java implementation you like.

You can see your altenative installations of java with (as root - add sudo if need be):

update-alternatives --list java

You can set your java alternative with:

update-alternatives --config java