Install GlusterFS on Centos7

source image: https://www.pexels.com/photo/bandwidth-close-up-computer-connection-1148820/

In this tutorial I use 3 systems (2 servers and a client) with 2 server with Centos7 and 1 client with docker gluster/gluster-centos

• IP address 192.168.1.9 (node A)
• IP address 192.168.1.10 (node B)
• IP address 192.168.1.35 (client)

Install GlusterFS on both nodes

First, we need to import the GPG keys on each server and enable the EPEL 7 repository:
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
yum -y install epel-release
yum -y install yum-priorities

add the line priority=10 to the [epel] on /etc/yum.repos.d/epel.repo:

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
failovermethod=priority
enabled=1
priority=10
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
[...]

Then update on existing packages on the system:
yum -y update

After the package is installed, let’s install the repo
yum -y install centos-release-gluster
yum -y install glusterfs-server

If you got a trouble when installing glusterfs-server and it says Requires: liburcu-cds.so.6()(64bit) or Requires: liburcu-bp.so.6()(64bit), try to install userspace-rcu. Since I’m using centos 7 with x86_64 architecture, I run this command

yum -y install http://mirror.centos.org/centos/7.9.2009/storage/x86_64/gluster-9/Packages/u/userspace-rcu-0.10.0-3.el7.x86_64.rpm

Start gluster service:
systemctl start glusterd.service

Open some ports in firewall config:

firewall-cmd --zone=public --add-port=24007-24008/tcp --permanent
firewall-cmd --zone=public --add-port=24009/tcp --permanent
firewall-cmd --zone=public --add-service=nfs --add-service=samba --add-service=samba-client --permanent
firewall-cmd --zone=public --add-port=111/tcp --add-port=139/tcp --add-port=445/tcp --add-port=965/tcp --add-port=2049/tcp --add-port=38465-38469/tcp --add-port=631/tcp --add-port=111/udp --add-port=963/udp --add-port=49152-49251/tcp --permanent
firewall-cmd --reload

Let’s configure node A
gluster peer probe 192.168.1.10

Check the status by command:
gluster peer status

Now, create the gluster volume named testvol with two replicas on 192.168.1.9 and 192.168.1.10 in the /gluster-data directory

gluster volume create testvol replica 2 transport tcp 192.168.1.9:/gluster-data 192.168.1.10:/gluster-data force

Start the volume
gluster volume start testvol

Then check both node info by
gluster volume info

It gonna be like this

gluster volume info on both server

Setting up gluster client
In this tutorial, I using the OSX system with docker installed. So I just need to pull the gluster fs docker image

docker pull gluster/gluster-centos

then, start the container and mount to server A into /mnt/glusterfs

mount.glusterfs 192.168.1.9:/testvol /mnt/glusterfs

mount the volume and check it with df -h

and voila! you’re mounted into gluster-server. try to write some file in folder /mnt/glusterfs from client, then check on /gluster-data both on gluster server