# Setup NFS Server

The instructions on this page are done entirely on the head node.

On the head node, do:
```
yum install -y nfs-utils
```
Make a directory for everything that we may want to share.
```
mkdir /export
mkdir /export/{apps,data,service,site}
```
Ensure that permissions are correct.
```
chmod 775 -R /export/
```

Go to /etc/exports and add this:

/export/apps 10.50.0.0/16(rw,no_root_squash,sync)
/export/data 10.50.0.0/16(rw,no_root_squash,sync)
/export/service 10.50.0.0/16(rw,no_root_squash,sync)
/export/site 10.50.0.0/16(rw,no_root_squash,sync)
/home 10.50.0.0/16(rw,no_root_squash,sync)

Bind mounts for the NFS server. Open the the file /etc/fstab and add this, then save and close the file.

/export/apps    /opt/apps none defaults,bind 0 0
/export/data    /opt/data none defaults,bind 0 0
/export/service /opt/service none defaults,bind 0 0
/export/site    /opt/site none defaults,bind 0 0

Create several new directories:
```
mkdir /opt/{apps,data,service,site}
```
Start and enable NFS:
```
systemctl start nfs
systemctl enable nfs
```
start activates NFS, and enable means that NFS will startup on boot.
Export and show the mount points, then mount them.
```
exportfs -va
mount -a
```
the v option shows more information and the a option exports/mounts all.

The NFS server has now been setup.

# Testing

If all was successful, then the following should be the case on the head node:

The export directory exists, and contains these four directories:
```
[root@chead1 ~]# ls /export/
apps  data  service  site
```

The export directory has these permissions:

[root@chead1 ~]# ls -l /export
total 0
drwxrwxr-x. 2 root root 6 Sep 20 09:36 apps
drwxrwxr-x. 2 root root 6 Sep 20 09:36 data
drwxrwxr-x. 2 root root 6 Sep 20 09:36 service
drwxrwxr-x. 2 root root 6 Sep 20 09:36 site

The files /etc/exports and /etc/fstab both contain the information from the instructions.
The opt directory exists, and contains these four directories:
```
[root@chead1 ~]# ls /opt/
apps  data  service  site
```
The command systemctl status nfs shows the service as active with no errors.

The command showmount --exports displays that the correct directories have been exported, e.g.

[root@chead1 ~]# showmount --exports
Export list for chead1.pri.mycluster1.cluster.local:
/home           10.50.0.0/16
/export/site    10.50.0.0/16
/export/service 10.50.0.0/16
/export/data    10.50.0.0/16
/export/apps    10.50.0.0/16