[Gluster-users] Replication and geo-replication.

[Jacob Shucart]

Gerald,

This should work.  Geo-replication is separate for regular replication.  Once you have fixed the replication by putting the new hardware in place and performing the replace-brick operation, you will want to trigger a self heal:

http://www.gluster.com/community/documentation/index.php/Gluster_3.2:_Migrating_Volumes
http://www.gluster.com/community/documentation/index.php/Gluster_3.2:_Triggering_Self-Heal_on_Replicate

Then you will want to set up passwordless SSH from root on one of those systems, to root at the remote Gluster system.  Keep in mind that the dependencies all have to be correct for geo-replication on both ends and that it is advisable to have a Gluster volume at the remote end even if it only has one brick since you can expand it later if you need.  You may also want to make sure you have 3.2.3 running at both ends.  You then initiate geo-replication like:

gluster volume geo-replication VOLNAME root at REMOTEHOST::REMOTEVOLNAME start

You can check the status after a few minutes and it will say OK when it is working.  If it says anything other than that, dependencies are probably the issue.  In the commercial appliances we make sure all of the dependencies are in place. For open source you will want to check the documentation for the list.

-Jacob

-----Original Message-----
From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Gerald Brandt
Sent: Thursday, September 29, 2011 4:37 AM
To: gluster-users at gluster.org
Subject: [Gluster-users] Replication and geo-replication.

Hi,

Will the following scenario work?

I created a 2 bricks with replication.  The second brick was my personal machine, so I removed it from the gluster.  I'm now running a replica system with a single brick (ie: no replication).

When my new hardware comes in, I'll add it as the second brick to the replica, and patiently wait while it syncs data.

Once I have a running replica, can I add geo-replication to the mix?  If so, how would that be done?

Gerald
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