GlusterFS volume with Docker

How to use GlusterFS volume with Docker or Docker Swarm.

Assume there are two nodes available for the cluster.

1. Host Resolving:
make sure `/etc/hosts` has all nodes IPs and hostnames mapped correctly.

2. Install GlusterFS on each node:
run these commands on each node

apt-get install software-properties-common -y
add-apt-repository ppa:gluster/glusterfs-3.12
apt-get update
apt install glusterfs-server -y
systemctl start glusterd
systemctl enable glusterd

ssh-keygen -t rsa

3. Test
On the master node, run these commands:
gluster peer probe host01; gluster peer probe host02;

where `host01` & `host02' are the node names.

- Run this command to list connectivity status of each node.
gluster pool list;

3. Shared Storage
On each node, create a space where the shared directory
mkdir -p /gluster/share;


4. Create the volume
- Run these commands on the host machine

gluster volume create staging-gfs replica 2 host01:/gluster/share host02:/gluster/share force;

gluster volume start staging-gfs;

5. Auto mount on reboot
- Run these commands on each node to allow starting the volume upon system reboot.

echo 'localhost:/staging-gfs /mnt glusterfs defaults,_netdev,backupvolfile-server=localhost 0 0' >> /etc/fstab;

mount.glusterfs localhost:/staging-gfs /mnt;
chown -R root:docker /mnt;

6. Check the volume is mounted

On each node, run this command and check it is mounted
df -h;


Reference:
https://thenewstack.io/tutorial-creat...

• #science_technology
• #docker
• #glusterfs
• #volume
• #container