Gluster users - Nov 2024 - Add an arbiter when have multiple bricks at same server.

Right now you have 3 "sets" of replica 2 on 2 hosts.In your case you
don't need so much space for arbiters (10-15GB with 95 maxpct is enough for
each "set") and you need a 3rd system or when the node that holds the
data brick + arbiter brick fails (2 node scenario) - that "set" will
be unavailable.
If you do have a 3rd host, I think the command would be:gluster volume add-brick
VOLUME replica 2 arbiter 1 server3:/first/set/arbiter
server3:/second/set/arbiter server3:/last/set/arbiter

Best Regards,Strahil Nikolov

Best Regards,
Strahil Nikolov 
 
  On Tue, Nov 5, 2024 at 21:17, Gilberto Ferreira<gilberto.nunes32 at
gmail.com> wrote:   ________



Community Meeting Calendar:

Schedule -
Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
Bridge: https://meet.google.com/cpu-eiue-hvk
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Ok.
I have a 3rd host with Debian 12 installed and Gluster v11. The name of the
host is arbiter!

I already add this host into the pool:
arbiter:~# gluster pool list
UUID                                    Hostname                State
0cbbfc27-3876-400a-ac1d-2d73e72a4bfd    gluster1.home.local     Connected
99ed1f1e-7169-4da8-b630-a712a5b71ccd    gluster2                Connected
4718ead7-aebd-4b8b-a401-f9e8b0acfeb1    localhost               Connected

But when I do this:
pve01:~# gluster volume add-brick VMS replica 2 arbiter 1 arbiter:/arbiter1
arbiter:/arbiter2 arbiter:/arbiter3
I got this error:

For arbiter configuration, replica count must be 3 and arbiter count must
be 1. The 3rd brick of the replica will be the arbiter

Usage:
volume add-brick <VOLNAME> [<replica> <COUNT> [arbiter
<COUNT>]]
<NEW-BRICK> ... [force]

gluster vol info
pve01:~# gluster vol info

Volume Name: VMS
Type: Distributed-Replicate
Volume ID: e1a4f787-3f62-441e-a7ce-c0ae6b111ebf
Status: Started
Snapshot Count: 0
Number of Bricks: 3 x 2 = 6
Transport-type: tcp
Bricks:
Brick1: gluster1:/disco2TB-0/vms
Brick2: gluster2:/disco2TB-0/vms
Brick3: gluster1:/disco1TB-0/vms
Brick4: gluster2:/disco1TB-0/vms
Brick5: gluster1:/disco1TB-1/vms
Brick6: gluster2:/disco1TB-1/vms
Options Reconfigured:
performance.client-io-threads: off
transport.address-family: inet
storage.fips-mode-rchecksum: on
cluster.granular-entry-heal: on
cluster.data-self-heal: off
cluster.metadata-self-heal: off
cluster.entry-self-heal: off
cluster.self-heal-daemon: off

What am I doing wrong?




---


Gilberto Nunes Ferreira
(47) 99676-7530 - Whatsapp / Telegram






Em qua., 6 de nov. de 2024 ?s 11:32, Strahil Nikolov <hunter86_bg at
yahoo.com>
escreveu:
> Right now you have 3 "sets" of replica 2 on 2 hosts.
> In your case you don't need so much space for arbiters (10-15GB with 95
> maxpct is enough for each "set") and you need a 3rd system or
when the node
> that holds the data brick + arbiter brick fails (2 node scenario) - that
> "set" will be unavailable.
>
> If you do have a 3rd host, I think the command would be:
> gluster volume add-brick VOLUME replica 2 arbiter 1
> server3:/first/set/arbiter server3:/second/set/arbiter
> server3:/last/set/arbiter
>
>
> Best Regards,
> Strahil Nikolov
>
> Best Regards,
> Strahil Nikolov
>
> On Tue, Nov 5, 2024 at 21:17, Gilberto Ferreira
> <gilberto.nunes32 at gmail.com> wrote:
> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge: https://meet.google.com/cpu-eiue-hvk
> Gluster-users mailing list
> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users
>
>
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