How to install Nexus on EC2 by Raj Gupta

Nexus:-Nexus is one a artifact repository which helps to store your build outcomes.

Minimum Memory for this is 4G. try in t2.Medium server if you are doing it on  AWS.

yum update

yum install java-1.8*

java -version

cd /opt

yum install wget -y

wget https://sonatype-download.global.ssl.fastly.net/nexus/3/nexus-3.0.2-02-unix.tar.gz

tar -zxvf  nexus-3.0.2-02-unix.tar.gz

mv /opt/nexus-3.0.2-02 /opt/nexus    -------rename it

cd nexus

As a good security practice, it is not advised to run nexus service as root. so create new user called nexus and grant sudo access to manage nexus services

sudo adduser nexus

visudo                 -----go to this sudo file and add this user under root and give same permission as root(nexus   ALL=(ALL)       ALL)

then set the password for this user

passwd nexus

sudo chown -R nexus:nexus /opt/nexus

ls -ld /opt/nexus

Now open /opt/nexus/bin/nexus.rc file, uncomment run_as_user parameter and set it as following.

vi /opt/nexus/bin/nexus.rc     and add run_as_user="nexus" line to file

Add nexus as a service at boot time

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

Login as a nexus user and start service

su - nexus

service nexus start

service nexus status

Login nexus server from browser on port 8081

http://<Nexus_server ip address>:8081

Use default credentials to login

username : admin

password : admin123