Jenkins Nexus Integration - How to integrate Nexus with Jenkins

 

You need to install Nexus Artifact Uploader plug-in to integrate Nexus with Jenkins. Let us see how to integrate Jenkins with Nexus and able to upload War/Ear/Jar/Exe/DLLs.


Pre-requistes:

Install Nexus Artifact Uploader plugin in Jenkins.

Steps:

1. Once you installed the above plug-ins, click existing FreeStyle job configuration or create a new job.

2. Under source code management. enter bitbucket repo url and git credentials.

3. Go to build section, add Maven targets. with goals clean install. Also click advance, give path of POM.xml

4. click on Add build step, choose Nexus artifact uploader.

5. Enter information per below screen shot.
Make sure you enter version as 1.0-SNAPSHOT and repository as maven-snapshots. You can take the information from your WebApp/pom.xml from Bitbucket Repo

6. Click on Apply, Save.

7. Now login to Nexus repo, Click on Components, Click on maven-snapshots

8. you shall see the WAR being uploaded here.

Note:

Click here for Jenkins pipeline code for Nexus Upload.

How to Install Nexus on RedHat Linux

Nexus is binary repository manager, used for storing build artifacts. We will eventually integrate Nexus with Jenkins for uploading WAR/EAR/JAR files there.

Here are the steps for installing Sonatype Nexus 3 in RHEL in EC2 on AWS. Please create a new Redhat EC2 instance with small type. Choose Redhat Enterprise 8.

Pre-requisites:
Make sure you open port 8081 in AWS security group

Installation Steps:

sudo yum install wget -y

Download Open JDK

sudo yum install java-1.8.0-openjdk.x86_64 -y

Execute the below command to navigate to /opt directory by changing directory:
cd /opt

Download Nexus
sudo wget http://download.sonatype.com/nexus/3/nexus-3.23.0-03-unix.tar.gz

Extract Nexus
sudo tar -xvf nexus-3.23.0-03-unix.tar.gz
sudo mv nexus-3.23.0-03 nexus

Create a user called Nexus
sudo adduser nexus

Change the ownership of nexus files and nexus data directory to nexus user.
sudo chown -R nexus:nexus /opt/nexus
sudo chown -R nexus:nexus /opt/sonatype-work

Configure to run as Nexus user

change as below screenshot by removing # and adding nexus
 sudo vi /opt/nexus/bin/nexus.rc

Modify memory settings in Nexus configuration file
sudo vi /opt/nexus/bin/nexus.vmoptions

Modify the above file as shown in red highlighted section:

-Xms512m
-Xmx512m
-XX:MaxDirectMemorySize=512m

after making changes, press wq! to come out of the file.

Configure Nexus to run as a service

sudo vi /etc/systemd/system/nexus.service
Copy the below content highlighted in green color.

[Unit]

Description=nexus service

After=network.target

[Service]

Type=forking

LimitNOFILE=65536

User=nexus

Group=nexus

ExecStart=/opt/nexus/bin/nexus start

ExecStop=/opt/nexus/bin/nexus stop

User=nexus

Restart=on-abort
[Install]

WantedBy=multi-user.target

Create a link to Nexus
sudo ln -s /opt/nexus/bin/nexus /etc/init.d/nexus

Execute the following command to add nexus service to boot.

sudo chkconfig --add nexus
sudo chkconfig --levels 345 nexus on

Start Nexus
sudo service nexus start

Check whether Nexus service is running
sudo service nexus status

Check the logs to see if Nexus is running
tail -f /opt/sonatype-work/nexus3/log/nexus.log

You will see Nexus started..
If you Nexus stopped, review the steps above.

Now press Ctrl C to come out of this windows.

Once Nexus is successfully installed, you can access it in the browser by URL - http://public_dns_name:8081

Click on Sign in link

user name is admin and password can be found by executing below command:

sudo cat /opt/sonatype-work/nexus3/admin.password

Copy the password and click sign in.
Now setup admin password as admin123

you should see the home page of Nexus:

Please follow steps for integrating Nexus with Jenkins