[Gluster-users] Replacing a third data node with an arbiter one

[Sankarshan Mukhopadhyay]

On Fri, Jan 26, 2018 at 7:05 AM, Ravishankar N <ravishankar at redhat.com> wrote:
>
>
> On 01/24/2018 07:20 PM, Hoggins! wrote:
>
> Hello,
>
> The subject says it all. I have a replica 3 cluster :
>
>     gluster> volume info thedude
>
>     Volume Name: thedude
>     Type: Replicate
>     Volume ID: bc68dfd3-94e2-4126-b04d-77b51ec6f27e
>     Status: Started
>     Snapshot Count: 0
>     Number of Bricks: 1 x 3 = 3
>     Transport-type: tcp
>     Bricks:
>     Brick1: ngluster-1.network.hoggins.fr:/export/brick/thedude
>     Brick2: ngluster-2.network.hoggins.fr:/export/brick/thedude
>     Brick3: ngluster-3.network.hoggins.fr:/export/brick/thedude
>     Options Reconfigured:
>     cluster.server-quorum-type: server
>     transport.address-family: inet
>     nfs.disable: on
>     performance.readdir-ahead: on
>     client.event-threads: 8
>     server.event-threads: 15
>
>
> ... and I would like to replace, say ngluster-2 with an arbiter-only
> node, without any data. Is that possible ? How ?
>
> Yes, you would need to reduce it to replica 2 and then convert it to
> arbiter.
> 1. Ensure there are no pending heals, i.e. heal info shows zero entries.
> 2. gluster volume remove-brick thedude replica 2
> ngluster-3.network.hoggins.fr:/export/brick/thedude force
> 3. gluster volume add-brick thedude replica 3 arbiter 1 <IP:brick path of
> the new arbiter brick>
>

Would it be good to have this small sequence of steps noted down
somewhere other than a mailing list archive? I imagine this is going
to be sought out by a few more users choosing this course.