nexus-install-in-ubuntu.md

update packages

sudo apt-get update

install openjdk 8

sudo apt install openjdk-8-jdk

change user to sudo

sudo su

browse to /opt. where we will install nexus

get nexus binary

wget https://sonatype-download.global.ssl.fastly.net/nexus/3/nexus-3.24.0-02-unix.tar.gz

tar -zxvf nexus-3.24.0-02-unix.tar.gz

mv /opt/nexus-3.24.0-02 /opt/nexus

add user. (best practice to avoid root user. create new user)

sudo adduser nexus

add priviledge to new user

visudo

###add nexus ALL=(ALL) NOPASSWD: ALL

change ownership to new user

sudo chown -R nexus:nexus /opt/nexus

sudo chown -R nexus:nexus /opt/sonatype-work

update /opt/nexus/bin/nexus.rc file, just uncomment run_as_user

vi /opt/nexus/bin/nexus.rc

run_as_user="nexus"

Add nexus as a service at boot time

sudo ln -s /opt/nexus/bin/nexus /etc/init.d/nexus

start nexus

/etc/init.d/nexus start

check the services running on ports

netstat -nlpt

it should show like below

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

tcp 0 0 0.0.0.0:8081 0.0.0.0:* LISTEN -

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:36665 0.0.0.0:* LISTEN -
tcp6 0 0 :::22 :::* LISTEN -

http://nexuxserver url:8081 (default 8081). Make sure you have 8081 port in your security group (for AWS) / network rule (for Azure) / ingress rule ( for GCP)

Use below credentials to login

username : admin

get initial password from path /opt/sonatype-work/nexus3/admin.password

run cat /opt/sonatype-work/nexus3/admin.password in your nexus server.

pull artifact from nexus to jenkins and deploy to tomcat

in JENKINS build job write below shell script to pull artifact

wget --user= --password= <nexus artifact url (war/ear)>

wget --user=admin --password=admin http://35.184.138.42:8081/repository/maven-snapshots/awstechguide/spring-webapp/1.0.0-SNAPSHOT/spring-webapp-1.0.0-20200703.145607-1.WAR