http://mithuntechnologies.com/
http://mithuntechnologies.co.in/
Note: As of release 3.78.0, the Unix archive comes bundled with a
platform-specific JDK. This means that the Unix archive cannot be used
on a Mac. No need to install Java.
Login as a root user
sudo su -
cd /opt
wget https://download.sonatype.com/nexus/3/nexus-unix-x86-64-3.78.0-14.tar.gz
tar -xvf nexus-unix-x86-64-3.78.0-14.tar.gz
mv nexus-3.78.0-14 nexus
#As
a good security practice, Nexus is not advised to run nexus service as a
root user, so create a new user called nexus and grant sudo access to
manage nexus services as follows.
useradd nexus
#Give the sudo access to nexus user
visudo
nexus ALL=(ALL) NOPASSWD: ALL
#Change the owner and group permissions to /opt/nexus and /opt/sonatype-work directories.
chown -R nexus:nexus /opt/nexus
chown -R nexus:nexus /opt/sonatype-work
chmod -R 775 /opt/nexus
chmod -R 775 /opt/sonatype-work
#Open /opt/nexus/bin/nexus.rc file and uncomment run_as_user parameter and set as nexus user.
vi /opt/nexus/bin/nexus.rc
run_as_user="nexus"
#Create nexus as a service
ln -s /opt/nexus/bin/nexus /etc/init.d/nexus
#Switch as a nexus user and start the nexus service as follows.
sudo su - nexus
#Enable the nexus services
sudo systemctl enable nexus
#Start the nexus service
sudo systemctl start nexus
#Check the nexus service status
sudo systemctl status nexus
Troubleshooting
---------------------
nexus service is not starting?
a)make sure need to change the ownership and group to /opt/nexus and /opt/sonatype-work directories and permissions (775) for nexus user.
b)make sure you are trying to start nexus service with nexus user.
c)check java is installed or not using java -version command.
d) check the nexus.log file which is availabe in /opt/sonatype-work/nexus3/log directory.
Unable to access nexus URL?
-------------------------------------
a)make sure port 8081 is opened in security groups in AWS ec2 instance.
