Ubuntu 16.04
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GlusterFS : Distributed Setting2016/06/05

Configure Storage Clustering.
For example, create a distributed volume with 2 servers.
This example shows to use 2 servers but it's possible to use more than 3 servers.
+----------------------+          |          +----------------------+
| [GlusterFS Server#1] | || [GlusterFS Server#2] |
|   node01.srv.world   +----------+----------+   node02.srv.world   |
|                      |                     |                      |
+----------------------+                     +----------------------+

It is recommended to use partitions for GlusterFS volumes which are different from the / partition.
The environment on this example is set as that sdb1 is mounted on /glusterfs directory for GlusterFS Configuration on all Nodes.
[2] Create a Directory for GlusterFS Volume on all Nodes.
mkdir /glusterfs/distributed

[3] Configure Clustering like follows on a node. (it's OK on any node)
# probe the node

gluster peer probe node02

peer probe: success.
# show status

gluster peer status

Number of Peers: 1

Hostname: node02
Uuid: e8a3bcde-013e-4910-bbe6-0ce70d2e8feb
State: Peer in Cluster (Connected)

# create volume

gluster volume create vol_distributed transport tcp \
node01:/glusterfs/distributed \

volume create: vol_distributed: success: please start the volume to access data
# start volume

gluster volume start vol_distributed

volume start: vol_distributed: success
# show volume info

gluster volume info

Volume Name: vol_distributed
Type: Distribute
Volume ID: 8fbb6cf9-eab0-44e3-b040-d474a801d3c1
Status: Started
Number of Bricks: 2
Transport-type: tcp
Brick1: node01:/glusterfs/distributed
Brick2: node02:/glusterfs/distributed
Options Reconfigured:
performance.readdir-ahead: on
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