NFS Setup on RHVH

Tags: Hosted Engine, NFS, RHVH, Red Hat, Storage, Virtualization

Chapter 4. Exporting NFS shares Red Hat Enterprise Linux 8 | Red Hat Customer Portal

Create the file system

1. Ascertain the correct disk using:

   fdisk -l
   
   fdisk <device-id>
   
   n #to create a new partition
   w #write to the partition table
   
   

2. Make xfs filesystem

   mkfs.xfs /dev/<device-id>
   

   blacklist {
           devnode "^sd[a-z]"
   }
   

   Restart the multipath daemon using:

   systemctl restart mutlipathd
   

3. Install nfs-utils to enable nfs shares:

   yum install nfs-utils
   

4. Ascertain that rpcbind is running:

   systemctl status rpcbind
   

5. If rpcbind is not started, start it using:

   systemctl enable --now rpcbind
   

6. Enable nfs-server

   systemctl enable nfs-server
   systemctl start nfs-server
   

7. Mount the shared partition:

   mkdir /storage #create the folder to mount the partition
   mount -t xfs /dev/<dev-id> /storage
   

8. Auto-mount partition on startup using fstab: /Find the block id of the partition:

   blkid
   

   

   • Note the highlighted UUID which you get, this will be used later

   • Make the following entry in /etc/fstab replacing the UUID with the one you found in the previous command:

     UUID=a94f4872-9607-488b-8661-a7f8d79ea924 /storage xfs defaults 0 2
     

   • Mount the file system:

     mount -a
     

9. To share the mount on nfs, make the following entry in the /etc/exports:

   /storage hostname.tld(rw)
   

   IMPORTANT

   The format of the /etc/exports file is very precise, particularly in regards to use of the space character. Remember to always separate exported file systems from hosts and hosts from one another with a space character. However, there should be no other space characters in the file except on comment lines.

   For example, the following two lines do not mean the same thing:

   /home bob.example.com(rw)
   /home bob.example.com (rw)
   

   The first line allows only users from bob.example.com read and write access to the /home directory. The second line allows users from bob.example.com to mount the directory as read-only (the default), while the rest of the world can mount it read/write.

10. Restart the nfs-server:

    systemctl restart nfs-server
    

11. Add firewall rules to enable access from other hosts:

    firewall-cmd --permanent --add-service mountd
    firewall-cmd --permanent --add-service rpc-bind
    firewall-cmd --permanent --add-service nfs
    firewall-cmd --permanent --add-port=<mountd-port>/tcp
    firewall-cmd --permanent --add-port=<mountd-port>/udp
    firewall-cmd --reload