# 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