#Overview

Running a Nexus service as a container within OSE v3, with a persistent volume to survive restarts. Uses the sonatype/nexus container.

##Environment Config

This assumes you have followed the training in Using persistent storage. So from that the following would be configured :

nfs-utils installed
Firewall Configured
SELinux Configured

1. Create another export

    mkdir -p /var/export/nexus
    chown nfsnobody:nfsnobody /var/export/nexus
    chmod 700 /var/export/nexus
   

2. Edit /etc/exports and add the following line:

    /var/export/nexus *(rw,sync,all_squash)
   

3. Export

    exportfs -a
   

Running exportfs you should see something similar to:

/var/export/nexus
	<world>
/var/export/vol1
	<world>

##Installation

This assumes you are running as the admin user. You can run as a non-admin user, but for this example creating the Project and the PersistentVolume still needs to be done as an administrator. We will create a separate project to run Nexus in and target it to nodes labelled "region=infra" in.

1. Create the project

    		 oadm new-project infra --node-selector="region=infra" --description="Project for running infrastructure services"
   

2. Create the PersistentVolume:

    oc create -f persistent-volume.yaml
   

3. Create the PersistentVolumeClaim

    oc create -f persistent-volume-claim.yaml -n infra
   

4. Create the pods, service & route

    oc create -f nexus.yaml -n infra
   

5. Attach the claimed volume to the nexus container

    oc volume dc/nexus-dc --add --name=pvol -t persistentVolumeClaim --claim-name=nexus-claim --overwrite -n infra
   

##Running

OSE will do the running for you! First run you will have to configure Nexus. It may take a little while to pull the nexus container to run it but running

1. Head to http://nexus.cloudapps.example.com/ (That is the entry the route creates) which on first run will take you to the front page (Default Nexus login is admin/admin123).

You should be able to look at the exported NFS directory to see the files being created.