SonaType Nexus3 is one of the popular binary repository managers, used for storing build artifacts such as Jars,WARs, EARs. It is Java based web application.
Pre-requistes
Please create a new Ubuntu 18.0.4 EC2 instance
with small type in AWS cloud. You would need at least 2 GB RAM.
Let us see how to configure Nexus 3 on Ubuntu 18.0.4.
How to setup SonaType Nexus3 on Ubuntu:
Java 8 installation
sudo apt update && sudo apt install
openjdk-8-jre-headless -y
Note:
Nexus is not compatible with Java 11 in Ubuntu 18.0.4. So we need to install
Java 8.
java
-version
Execute the below commands - navigate to /opt directory by changing
directory:
cd
/opt
Download Nexus
sudo
wget https://download.sonatype.com/nexus/3/nexus-3.22.0-02-unix.tar.gz
Extract Nexus files
sudo tar -xvf nexus-3.22.0-02-unix.tar.gz
sudo
mv nexus-3.22.0-02 nexus
Create a user called Nexus
sudo
adduser nexus
give some password may be as admin, but do remember.
Keep entering enter for all other values and press y to confirm
the entries.
Give permission to Nexus
user
sudo
chown -R nexus:nexus /opt/nexus
sudo
chown -R nexus:nexus /opt/sonatype-work
sudo vi /opt/nexus/bin/nexus.rc
change run_as_user="nexus"
Modify memory settings
sudo vi /opt/nexus/bin/nexus.vmoptions
Add all the below changes
the file with below yellow highlighted entry:
-Xms512M
-Xmx512M
-XX:MaxDirectMemorySize=512m
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
Now Start Nexus
sudo systemctl enable nexus
sudo systemctl start nexus
sudo systemctl status nexus
if it says stopped, review the steps above and you can
troubleshoot by looking into Nexus logs by executing below command:
tail
-f /opt/sonatype-work/nexus3/log/nexus.log
Press control C to come out of the above
window.
It should say
Started Sonatype Nexus OSS 3.22.0-02. If you Nexus stopped, review
the steps above.
Once Nexus is successfully installed, you can access it in the
browser by
URL - http://public_dns_name:8081
Now click on Sign
in, enter admin as user name and password by executing below cat command.
cat
/opt/sonatype-work/nexus3/admin.password
Now change admin
password as admin123
enable anonymous
access
Click Finish.
Sign in with user name/password is admin/admin123
you should see the home page of Nexus.
Please follow steps for integrating Nexus with
Jenkins
http://www.cidevops.com/2018/06/jenkins-nexus-integration-how-to.html
