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

I had the same issue, and when I checked if Java is installed I realised it's not, so installing Java solved the problem for me.

Check for java:

java -version

If Java is installed in the system, the command will return the java version otherwise it will show a message like this.

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-5-jre-headless
 * openjdk-8-jre-headless
 * gcj-4.8-jre-headless
 * gcj-4.9-jre-headless
 * openjdk-9-jre-headless

To install java use the following command.

sudo apt-get install default-jre