Install Nexus on Ubuntu 16.04

1. Introduction

This post shows how to install Nexus on Ubuntu 16.04

2. Step by Step

2.1. Download install binary

$ cd /tmp
$ wget http://download.sonatype.com/nexus/3/nexus-3.6.0-02-unix.tar.gz

2.2. Install Nexus on /opt/nexus

$ tar -xvzf nexus-3.6.0-02-unix.tar.gz

$ sudo mv /tmp/nexus-3.6.0-02 /opt

$ sudo mv /opt/nexus-3.6.0-02 /opt/nexus

2.3. Configure Nexus 

a) Configure Nexus Port

$ sudo cp /opt/nexus/etc/nexus-default.properties /opt/nexus/etc/nexus-default.properties.bkp.2017-11-05 # take a backup

$ sudo vim /opt/nexus/etc/nexus-default.properties
    :
application-port=8081
    :

b) Add firewall rule to accept incomming call on nexus port 8081

$ sudo ufw allow 8081

c) Configure Nexus script - run_as_user

$ sudo cp /opt/nexus/bin/nexus /opt/nexus/bin/nexus.bkp.2017-11-05 # backup
$ sudo vim /opt/nexus/bin/nexus
    :
# user to execute as; optional but recommended to set
run_as_user='nexus'
NEXUS_HOME="/opt/nexus"
    :

d) Configure nexus users and group

$ sudo adduser --no-create-home --disabled-login --disabled-password nexus
Adding user `nexus' ...
Adding new group `nexus' (1002) ...
Adding new user `nexus' (1002) with group `nexus' ...
Not creating home directory `/home/nexus'.
Changing the user information for nexus
    :
Is the information correct? [Y/n] Y

e) Set files permission '/opt/nexus'

$ sudo chown -R nexus:nexus /opt/nexus

2.4. Deploying nexus and sonatype-work directories

$ sudo mkdir /var/lib/nexus

$ sudo mkdir /var/lib/nexus/sonatype-work

$ sudo chown -R nexus:nexus /var/lib/nexus

2.5. Run Nexus and check

$ su - nexus
$ whoami
nexus
$ /opt/nexus/bin/nexus start

3. References

• https://www.build-business-websites.co.uk/install-nexus-on-ubuntu-16-04/