Jenkins fails when running “service start jenkins”

Question

I installed jenkins on Cnetos 7 using the following:

sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins.io/redhat-stable/jenkins.repo
sudo rpm --impor         


        

Answer 1

Adding on to what has been already answered by Guna Sekaran. Jenkins need the user jenkins to be present in order to run the jenkins as a service.

To add user fire 'useradd jenkins' as root and fire 'passwd jenkins' as root before starting Jenkins as a service.

Answer 2

rm -rf /var/log/jenkins too big the log

Answer 3

[100 %]Solved. I had the same problem today. I checked my server space

df-h

I saw that server is out of space so i check which directory has most size by

sudo du -ch / | sort -h

I saw 12.2G /var/lib/jenkins so i entered this folder and cleared all the logs by

cd /var/libs/jenkins
rm *

and restart the jenkins it will work normal

sudo systemctl restart jenkins.service

Answer 4

I was trying to install it in kubuntu 18.04, and i was already sure that i had java installed, I confirmed by trying

java -version

I got the output like that

java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

Since I already know that my java PATH variables are defined in /etc/environment file, I added that file to the top of /etc/init.d/jenkins file

source /etc/environment

you can even remove the PATH from /etc/init.d/jenkins file, since it's already defined in /etc/environment

after that, i restarted my jenkins server,and it seemed to start working fine from localhost:8080

Answer 5

Similar problem on Ubuntu 16.04.

Setting up jenkins (2.72) ...
Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.
invoke-rc.d: initscript jenkins, action "start" failed.
● jenkins.service - LSB: Start Jenkins at boot time
Loaded: loaded (/etc/init.d/jenkins; bad; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2017-08-01 05:39:06 UTC; 7ms ago
Docs: man:systemd-sysv-generator(8)
Process: 3700 ExecStart=/etc/init.d/jenkins start (code=exited, status=1/FAILURE)

Aug 01 05:39:06 ip-0 systemd[1]: Starting LSB: Start Jenkins ....
Aug 01 05:39:06 ip-0 jenkins[3700]: ERROR: No Java executable ...
Aug 01 05:39:06 ip-0 jenkins[3700]: If you actually have java ...
Aug 01 05:39:06 ip-0 systemd[1]: jenkins.service: Control pro...1
Aug 01 05:39:06 ip-0 systemd[1]: Failed to start LSB: Start J....
Aug 01 05:39:06 ip-0 systemd[1]: jenkins.service: Unit entere....
Aug 01 05:39:06 ip-0 systemd[1]: jenkins.service: Failed with....

To fix the issue manually install Java Runtime Environment:

JDK version 9:

sudo apt install openjdk-9-jre

JDK version 8:

sudo apt install openjdk-8-jre

Open Jenkins configuration file:

sudo vi /etc/init.d/jenkins

Finally, append path to the new java executable (line 16):

PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/lib/jvm/java-8-openjdk-amd64/bin/

Answer 6

Looks like java version conflicts.

Please refer https://medium.com/lucian-daniliuc/upgrading-jenkins-on-ubuntu-14-04-lts-df3e1209f98c