# Setup NFS Clients

The NFS server has been setup on the head node, now every compute node must be set up as an NFS client.

1. Install NFS

    dnf install -y nfs-utils

2. Open the file /etc/fstab and add the following text, then save and exit.

    chead1:/export/apps    /opt/apps     nfs    rsize=32768,wsize=32768,vers=3,_netdev,nofail    0 0
    chead1:/export/data    /opt/data     nfs    rsize=32768,wsize=32768,vers=3,_netdev,nofail    0 0
    chead1:/export/service /opt/service  nfs    rsize=32768,wsize=32768,vers=3,_netdev,nofail    0 0
    chead1:/export/site    /opt/site     nfs    rsize=32768,wsize=32768,vers=3,_netdev,nofail    0 0
    chead1:/home           /home         nfs    rsize=32768,wsize=32768,vers=3,_netdev,nofail    0 0

3. Make directories for NFS:

    mkdir /opt/{apps,data,service,site}

4. Start NFS

   systemctl start nfs-client.target
   systemctl enable nfs-client.target 
   

5. Mount NFS

    mount -a

At this point, this node is fully setup to be an NFS client. Repeat these steps on every other compute node, and then NFS will be completely set up.

# Testing

If all was successful, then the following should be the case on all compute nodes:

1. The file /etc/fstab should contain the information from the instructions.

2. The opt directory exists, and contains these four directories:

   [root@cnode01 ~]# ls /opt
   apps  data  service  site

3. The command systemctl status nfs-client.target shows the service as active with no errors.

4. The command df -h shows that NFS has been successfully mounted. E.g.

    [root@cnode01 ~]# df -h
    Filesystem              Size  Used Avail Use% Mounted on
    devtmpfs                872M     0  872M   0% /dev
    tmpfs                   907M     0  907M   0% /dev/shm
    tmpfs                   907M  8.5M  898M   1% /run
    tmpfs                   907M     0  907M   0% /sys/fs/cgroup
    /dev/vda1                10G  1.6G  8.5G  16% /
    tmpfs                   182M     0  182M   0% /run/user/0
    chead1:/export/apps      10G  1.6G  8.5G  16% /opt/apps
    chead1:/export/data      10G  1.6G  8.5G  16% /opt/data
    chead1:/export/service   10G  1.6G  8.5G  16% /opt/service
    chead1:/export/site      10G  1.6G  8.5G  16% /opt/site
    chead1:/home             10G  1.6G  8.5G  16% /home