GlusterFS : GlusterFS + NFS-Ganesha2023/06/19

	Install NFS-Ganesha and integrate with GlusterFS to mount Gluster Volume with NFS protocol. The supported NFS protocols by NFS-Ganesha are v3, v4.0, v4.1, pNFS. For example, Configure NFS Export setting to a Gluster Volume [vol_distributed] like an example of the link here.
[1]	Disable NFS feature in Gluster first. The NFS feature in Gluster is officially deprecated. Also if NFS server is running, stop and disable it, too.

# OK if [nfs.disable: on] (default setting)

root@node01:~#

gluster volume get vol_distributed nfs.disable

Option                                  Value
------                                  -----
nfs.disable                             on

# if [nfs.disable: off], turn to disable

root@node01:~#

gluster volume set vol_distributed nfs.disable on

volume set: success

# if NFS server is running, disable it

root@node01:~#

systemctl disable --now nfs-server

[2]	Install and Configure NFS-Ganesha on a Node in GlusterFS Cluster.

root@node01:~#

apt -y install nfs-ganesha-gluster

root@node01:~#

mv /etc/ganesha/ganesha.conf /etc/ganesha/ganesha.conf.org

root@node01:~#

vi /etc/ganesha/ganesha.conf

# create new

NFS_CORE_PARAM {
    # possible to mount with NFSv3 to NFSv4 Pseudo path
    mount_path_pseudo = true;
    # NFS protocol
    Protocols = 3,4;
}
EXPORT_DEFAULTS {
    # default access mode
    Access_Type = RW;
}
EXPORT {
    # unique ID
    Export_Id = 101;
    # mount path of Gluster Volume
    Path = "/vol_distributed";
    FSAL {
    	# any name
        name = GLUSTER;
        # hostname or IP address of this Node
        hostname="10.0.0.51";
        # Gluster volume name
        volume="vol_distributed";
    }
    # config for root Squash
    Squash="No_root_squash";
    # NFSv4 Pseudo path
    Pseudo="/vfs_distributed";
    # allowed security options
    SecType = "sys";
}
LOG {
    # default log level
    Default_Log_Level = WARN;
}

root@node01:~#

systemctl restart nfs-ganesha

root@node01:~#

systemctl enable nfs-ganesha

# show exports list

root@node01:~#

showmount -e localhost

Export list for localhost:
/vfs_distributed (everyone)

[3]	Verify NFS mounting on a Client Host.

root@client:~#

apt -y install nfs-common

# specify Pseudo path set on [Pseudo=***] in ganesha.conf

root@client:~#

mount -t nfs4 node01.srv.world:/vfs_distributed /mnt

root@client:~#

df -hT

Filesystem                        Type      Size  Used Avail Use% Mounted on
udev                              devtmpfs  1.9G     0  1.9G   0% /dev
tmpfs                             tmpfs     392M  580K  391M   1% /run
/dev/mapper/debian--vg-root       ext4       28G  1.4G   26G   5% /
tmpfs                             tmpfs     2.0G     0  2.0G   0% /dev/shm
tmpfs                             tmpfs     5.0M     0  5.0M   0% /run/lock
/dev/vda1                         ext2      455M   58M  373M  14% /boot
tmpfs                             tmpfs     392M     0  392M   0% /run/user/0
node01.srv.world:/vfs_distributed nfs4       56G  3.2G   51G   6% /mnt

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