Gluster users - Sep 2017 - Adding bricks to an existing installation.

All,

We currently have a Gluster installation which is made of 2 servers. Each
server has 10 drives on ZFS. And I have a gluster mirror between these 2.

The current config looks like:
SERVER A-BRICK 1 replicated to SERVER B-BRICK 1

I now need to add more space and a third server. Before I do the changes, I
want to know if this is a supported config. By adding a third server, I
simply want to distribute the load. I don't want to add extra redundancy.

In the end, I want to have the following done:
Add a peer to the cluster
Add 2 bricks to the cluster (one on server A and one on SERVER C) to the
existing volume
Add 2 bricks to the cluster (one on server B and one on SERVER C) to the
existing volume
After that, I need to rebalance all the data between the bricks...

Is this config supported? Is there something I should be careful before I
do this? SHould I do a rebalancing before I add the 3 set of disks?

Regards,


Ludwig
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Do you have sharding enabled ? If yes, don't do it.
If no I'll let someone who knows better answer you :)

On Mon, Sep 25, 2017 at 02:27:13PM -0400, Ludwig Gamache
wrote:
> All,
> 
> We currently have a Gluster installation which is made of 2 servers. Each
> server has 10 drives on ZFS. And I have a gluster mirror between these 2.
> 
> The current config looks like:
> SERVER A-BRICK 1 replicated to SERVER B-BRICK 1
> 
> I now need to add more space and a third server. Before I do the changes, I
> want to know if this is a supported config. By adding a third server, I
> simply want to distribute the load. I don't want to add extra
redundancy.
> 
> In the end, I want to have the following done:
> Add a peer to the cluster
> Add 2 bricks to the cluster (one on server A and one on SERVER C) to the
> existing volume
> Add 2 bricks to the cluster (one on server B and one on SERVER C) to the
> existing volume
> After that, I need to rebalance all the data between the bricks...
> 
> Is this config supported? Is there something I should be careful before I
> do this? SHould I do a rebalancing before I add the 3 set of disks?
> 
> Regards,
> 
> 
> Ludwig
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://lists.gluster.org/mailman/listinfo/gluster-users
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Sharding is not enabled.

Ludwig

On Mon, Sep 25, 2017 at 2:34 PM, <lemonnierk at ulrar.net> wrote:
> Do you have sharding enabled ? If yes, don't do it.
> If no I'll let someone who knows better answer you :)
>
> On Mon, Sep 25, 2017 at 02:27:13PM -0400, Ludwig Gamache wrote:
> > All,
> >
> > We currently have a Gluster installation which is made of 2 servers.
Each
> > server has 10 drives on ZFS. And I have a gluster mirror between these
2.
> >
> > The current config looks like:
> > SERVER A-BRICK 1 replicated to SERVER B-BRICK 1
> >
> > I now need to add more space and a third server. Before I do the
> changes, I
> > want to know if this is a supported config. By adding a third server,
I
> > simply want to distribute the load. I don't want to add extra
redundancy.
> >
> > In the end, I want to have the following done:
> > Add a peer to the cluster
> > Add 2 bricks to the cluster (one on server A and one on SERVER C) to
the
> > existing volume
> > Add 2 bricks to the cluster (one on server B and one on SERVER C) to
the
> > existing volume
> > After that, I need to rebalance all the data between the bricks...
> >
> > Is this config supported? Is there something I should be careful
before I
> > do this? SHould I do a rebalancing before I add the 3 set of disks?
> >
> > Regards,
> >
> >
> > Ludwig
>
> > _______________________________________________
> > Gluster-users mailing list
> > Gluster-users at gluster.org
> > http://lists.gluster.org/mailman/listinfo/gluster-users
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://lists.gluster.org/mailman/listinfo/gluster-users
>


-- 
Ludwig Gamache
IT Director - Element AI
4200 St-Laurent, suite 1200
514-704-0564
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