How To Install Jenkins on Ubuntu

Jenkins is a powerful application that allows continuous integration and continuous delivery of projects, regardless of the platform you are working on. It is a free source that can handle any kind of build or continuous integration. You can integrate Jenkins with a number of testing and deployment technologies. This article explains about- “How to install Jenkins on Ubuntu”

To add Jenkins PPA on Ubuntu, use the following command –

$ wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -
$ sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

Now update the packages, use the following command –

$ sudo apt-get update

To install Jenkins, use the following command –

$ sudo apt-get install jenkins

The sample output should be like this –

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
   libterm-readkey-perl linux-headers-4.4.0-31 linux-headers-4.4.0-31-generic
   linux-image-4.4.0-31-generic linux-image-extra-4.4.0-31-generic
   linux-signed-image-4.4.0-31-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
   daemon
The following NEW packages will be installed:
   daemon jenkins
0 upgraded, 2 newly installed, 0 to remove and 28 not upgraded.
Need to get 69.9 MB of archives.
After this operation, 70.5 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://in.archive.ubuntu.com/ubuntu xenial/universe amd64 daemon amd64 0.6.4-1 [98.2 kB]
.............................................................................................

To set the port number for Jenkins, using the following command –

$ sudo nano etc/default/jenkins

The sample output should be like this –

# defaults for jenkins continuous integration server

# pulled in from the init script; makes things easier.
NAME=jenkins

# location of java
JAVA=/usr/bin/java

# arguments to pass to java
JAVA_ARGS="-Djava.awt.headless=true" # Allow graphs etc. to work even when an $
#JAVA_ARGS="-Xmx256m"
#JAVA_ARGS="-Djava.net.preferIPv4Stack=true" # make jenkins listen on IPv4 addr$

PIDFILE=/var/run/$NAME/$NAME.pid

# user and group to be invoked as (default to jenkins)
JENKINS_USER=$NAME
JENKINS_GROUP=$NAME
........................................................................

Now search for HTTP_PORT=8080 and replace by HTTP_PORT=8081 as shown below –

# port for HTTP connector (default 8080; disable with -1)
HTTP_PORT=8081

Now save and exit the file.To restart Jenkins, use the following command –

$ sudo service jenkins restart

Copy the following URL and paste on your any favorite browser –

http://localhost:8081/

The sample output should be like this –

Use the following command to find the admin password as shown below –

$ sudo nano /var/lib/jenkins/secrets/initialAdminPassword

Copy the password and paste on your browser. Now click on continue button. The sample output would be like this –

Now click on Install Suggested Plugins which will promote the following screen as shown below –

After completion of installation process, the following screen comes up for creating the first admin user which is as shown below –

Complete the information which is required and click on the save and finish button. Now it will promote the following screen as shown below –

Now click on start using Jenkins which will promote the following screen as shown below –

In the above article, we have learnt – Learn how To Install Jenkins on Ubuntu. In our next articles, we will come up with more Linux based tricks and tips. Keep reading!