GlusterFS 7 : Replication Configuration2020/03/30 |
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Configure Storage Clustering with GlusterFS.
For example, Create a Replication volume with 3 Nodes.
It's possible to create Replication volume with 2 Nodes but it's not recommended because split-brain syndrome maybe happens
on [replica 2 volume]. As a countermeasure for split-brain, it is recommended to create volume with more than 3 Nodes or set [arbiter volume].
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+----------------------+ | +----------------------+
| [GlusterFS Server#1] |10.0.0.51 | 10.0.0.52| [GlusterFS Server#2] |
| node01.srv.world +----------+----------+ node02.srv.world |
| | | | |
+----------------------+ | +----------------------+
|
+----------------------+ |
| [GlusterFS Server#3] |10.0.0.53 |
| node03.srv.world +----------+
| |
+----------------------+
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It is strongly recommended to use partitions for GlusterFS volumes that are different from the / partition.
On this example, it shows settings on the environment that all nodes has [sdb1] and mount it to [/glusterfs]. |
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| [1] | |
| [2] | Create a Directory for GlusterFS Volume on all Nodes. |
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[root@node01 ~]# mkdir -p /glusterfs/replica |
| [3] | Configure Clustering like follows on a node. (it's OK on any node) |
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# probe the node [root@node01 ~]# gluster peer probe node02 peer probe: success. [root@node01 ~]# gluster peer probe node03 peer probe: success. # confirm status [root@node01 ~]# gluster peer status Number of Peers: 2 Hostname: node02 Uuid: f1c4ce91-1b08-45f7-84e7-6549a85071fd State: Peer in Cluster (Connected) Hostname: node03 Uuid: 075c4737-17fb-4476-9668-02dab9315d85 State: Peer in Cluster (Connected) # create volume [root@node01 ~]# gluster volume create vol_replica replica 3 transport tcp \ node01:/glusterfs/replica \ node02:/glusterfs/replica \ node03:/glusterfs/replica volume create: vol_replica: success: please start the volume to access data # start volume [root@node01 ~]# gluster volume start vol_replica volume start: vol_replica: success # confirm volume info [root@node01 ~]# gluster volume info Volume Name: vol_replica Type: Replicate Volume ID: a1e76dec-7102-4af2-ad5f-df89ebbb8351 Status: Started Snapshot Count: 0 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: node01:/glusterfs/replica Brick2: node02:/glusterfs/replica Brick3: node03:/glusterfs/replica Options Reconfigured: transport.address-family: inet storage.fips-mode-rchecksum: on nfs.disable: on performance.client-io-threads: off |
| [4] |
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