December 25, 2021 – indepthtechnology

Jenkins is an open-source automation tool which offers an easy way to set up a continuous integration and continuous delivery (CI/CD) pipeline.

OS: Ubuntu 18.04 Bionic Beaver LTS

CI/CD Tool: Jenkins

Java: OpenJDK8

First Step:

Install Java–> since Jenkins is built on Java application, install Java JDK.

sudo apt update

sudo apt install openjdk-8-jdk

cloud_user@0d52cf7c051c:~$ sudo apt update
[sudo] password for cloud_user:
Hit:1 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:3 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease
Reading package lists… Done
Building dependency tree
Reading state information… Done
1 package can be upgraded. Run ‘apt list –upgradable’ to see it.
cloud_user@0d52cf7c051c:~$

cloud_user@0d52cf7c051c:~$ sudo apt install openjdk-8-jdk
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following additional packages will be installed:
ca-certificates-java fonts-dejavu-extra java-common libatk-wrapper-java libatk-wrapper-java-jni libgif7 libice-dev libpcsclite1 libpthread-stubs0-dev libsm-dev
libx11-dev libx11-doc libxau-dev libxcb1-dev libxdmcp-dev libxt-dev openjdk-8-jdk-headless openjdk-8-jre openjdk-8-jre-headless x11proto-core-dev x11proto-dev
xorg-sgml-doctools xtrans-dev
Suggested packages:
default-jre libice-doc pcscd libsm-doc libxcb-doc libxt-doc openjdk-8-demo openjdk-8-source visualvm icedtea-8-plugin libnss-mdns fonts-ipafont-gothic
fonts-ipafont-mincho fonts-wqy-microhei fonts-wqy-zenhei fonts-indic
The following NEW packages will be installed:
ca-certificates-java fonts-dejavu-extra java-common libatk-wrapper-java libatk-wrapper-java-jni libgif7 libice-dev libpcsclite1 libpthread-stubs0-dev libsm-dev
libx11-dev libx11-doc libxau-dev libxcb1-dev libxdmcp-dev libxt-dev openjdk-8-jdk openjdk-8-jdk-headless openjdk-8-jre openjdk-8-jre-headless x11proto-core-dev
x11proto-dev xorg-sgml-doctools xtrans-dev
0 upgraded, 24 newly installed, 0 to remove and 1 not upgraded.
Need to get 43.9 MB of archives.
After this operation, 170 MB of additional disk space will be used.
Do you want to continue? [Y/n] click Yes

Once Java is installed add repository as a second step

2nd Step: Add the Jenkins repository:

This step is required to trust the package

wget -q -O – https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add –

Then add Jenkins repository to the system

sudo sh -c ‘echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list’

3rd Step: Install Jenkins:

Once repository is enabled install Jenkins as mentioned below.

$ Sudo apt update

$ sudo apt install jenkins

cloud_user@0d52cf7c051c:~$ sudo apt update
Hit:1 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:3 http://us-west-1.ec2.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease
Reading package lists… Done
Building dependency tree
Reading state information… Done

cloud_user@0d52cf7c051c:~$ sudo apt install jenkins
Reading package lists… Done
Building dependency tree
Reading state information… Done
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 1 not upgraded.
Need to get 71.9 MB of archives.
After this operation, 72.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] Click yes

After installing the Jenkins verify Jenkins service status.

systemctl status jenkins

cloud_user@0d52cf7c051c:~$ systemctl status jenkins
● jenkins.service – LSB: Start Jenkins at boot time
Loaded: loaded (/etc/init.d/jenkins; generated)
Active: active (exited) since Sat 2021-12-25 08:28:44 UTC; 1min 1s ago
Docs: man:systemd-sysv-generator(8)
Tasks: 0 (limit: 1114)
CGroup: /system.slice/jenkins.service

Allow port 8080 on Ubunutu inbuilt firewall

cloud_user@0d52cf7c051c:~$ sudo ufw allow 8080
Rules updated
Rules updated (v6)

Now browse server IP as with port 8080 and you will see below page