[Gluster-users] Add an arbiter when have multiple bricks at same server.

[Gilberto Ferreira]

Ok.
I got confused here!
For each brick I will need one arbiter brick, in a different
partition/folder?
And what if in some point in the future I decide to add a new brick in the
main servers?
Do I need to provide another partition/folder in the arbiter and then
adjust the arbiter brick counter?

---


Gilberto Nunes Ferreira






Em ter., 5 de nov. de 2024 às 13:22, Andreas Schwibbe <a.schwibbe at gmx.net>
escreveu:

> Your add-brick command adds 2 bricks 1 arbiter (even though you name them
> all arbiter!)
>
> The sequence is important:
>
> gluster v add-brick VMS replica 2 arbiter 1 gluster1:/gv0 gluster2:/gv0
> arbiter1:/arb1
>
> adds two data bricks and a corresponding arbiter from 3 different servers
> and 3 different disks,
> thus you can loose any one server OR any one disk and stay up and
> consistent.
>
> adding more bricks to the volume you can follow the pattern.
>
> A.
>
> Am Dienstag, dem 05.11.2024 um 12:51 -0300 schrieb Gilberto Ferreira:
>
> Hi there.
>
> In previous emails, I comment with you guys, about 2 node gluster server,
> where the bricks lay down in different size and folders in the same server,
> like
>
> gluster vol create VMS replica 2 gluster1:/disco2TB-0/vms
> gluster2:/disco2TB-0/vms gluster1:/disco1TB-0/vms gluster2:/disco1TB-0/vms
> gluster1:/disco1TB-1/vms gluster2:/disco1TB-1/vms
>
> So I went ahead and installed a Debian 12 and installed the same gluster
> version that the other servers, which is now 11.1 or something like that.
> In this new server, I have a small disk like 480G in size.
> And I created 3 partitions formatted with XFS using imaxpct=75, as
> suggested in previous emails.
>
> And than in the gluster nodes, I tried to add the brick
> gluster vol add-brick VMS replica 3 arbiter 1 arbiter:/arbiter1/arbiter1
> arbiter:/arbiter2/arbiter2 arbiter:/arbiter3/arbiter3
>
> But to my surprise (or not!) I got this message:
> volume add-brick: failed: Multiple bricks of a replicate volume are
> present on the same server. This setup is not optimal. Bricks should be on
> different nodes to have best fault tolerant co
> nfiguration. Use 'force' at the end of the command if you want to override
> this behavior.
>
> Why is that?
>
>
>
>
>
>
> ---
>
>
> Gilberto Nunes Ferreira
>
>
>
>
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