Installing Jenkins on the Apache Tomcat server

You can perform the following steps if you do not wish to have a standalone server for Jenkins master, and want to host it along with other services that exist on the Apache Tomcat server:

1. Move to the /tmp directory and download the Jenkins application using the wget command, as shown here:

        cd /tmp
        wget http://mirrors.jenkins.io/war-stable/latest/jenkins.war 

1. The previous command will download the latest stable version of jenkins.war file.
2. Move the file from /tmp to /opt/tomcat/:

        sudo mv jenkins.war /opt/tomcat/webapps/ 

1. List the content of the /opt/tomcat/webapps/ directory :

        sudo ls -l /opt/tomcat/webapps 

You should see the following output:

        total 68984 
        -rw-rw-r--  1 ubuntu ubuntu 70613578 Jul 19 22:37 jenkins.war 
        drwxr-x---  3 root   root       4096 Jul 31 21:09 ROOT 
        drwxr-x--- 14 root   root       4096 Jul 31 21:09 docs 
        drwxr-x---  6 root   root       4096 Jul 31 21:09 examples 
        drwxr-x---  5 root   root       4096 Jul 31 21:09 manager 
        drwxr-x---  5 root   root       4096 Jul 31 21:09 host-manager 
        drwxr-x--- 10 root   root       4096 Jul 31 22:52 jenkins 

You will notice that a jenkins folder automatically gets created the moment you move the jenkins.war package to the webapps folder. This is because the .war file is a web application archive file that automatically gets extracted once deployed to the webapps directory. What we did is a small deployment activity.

1. And that is all you need to do. You can access Jenkins using http://<IP address of Tomcat server>:8080/jenkins.