[Gluster-users] [External] Replica 3 - how to replace failed node (peer)

Martin Toth
Wed, 10 Apr 2019 10:34:37 -0000

I?ve read this documentation but step 4 is really unclear to me. I don?t
understand related mkdir/rmdir/setfattr and so on.

Step 4:
Using the gluster volume fuse mount (In this example: /mnt/r2) set up metadata
so that data will be synced to new brick (In this case it is from
Server1:/home/gfs/r2_1 to Server1:/home/gfs/r2_5)

Why should I change trusted.non-existent-key on this volume?
It is even more confusing because other mentioned howtos does not contain this
step at all.

BR,
Martin

> On 10 Apr 2019, at 11:54, Davide Obbi <davide.obbi at booking.com>
wrote:
>
>
https://docs.gluster.org/en/v3/Administrator%20Guide/Managing%20Volumes/#replace-faulty-brick
<https://docs.gluster.org/en/v3/Administrator%20Guide/Managing%20Volumes/#replace-faulty-brick>
>
> On Wed, Apr 10, 2019 at 11:42 AM Martin Toth <snowmailer at gmail.com
<mailto:snowmailer at gmail.com>> wrote:
> Hi all,
>
> I am running replica 3 gluster with 3 bricks. One of my servers failed -
all disks are showing errors and raid is in fault state.
>
> Type: Replicate
> Volume ID: 41d5c283-3a74-4af8-a55d-924447bfa59a
> Status: Started
> Number of Bricks: 1 x 3 = 3
> Transport-type: tcp
> Bricks:
> Brick1: node1.san:/tank/gluster/gv0imagestore/brick1
> Brick2: node2.san:/tank/gluster/gv0imagestore/brick1 <? this brick is
down
> Brick3: node3.san:/tank/gluster/gv0imagestore/brick1
>
> So one of my bricks is totally failed (node2). It went down and all data
are lost (failed raid on node2). Now I am running only two bricks on 2 servers
out from 3.
> This is really critical problem for us, we can lost all data. I want to add
new disks to node2, create new raid array on them and try to replace failed
brick on this node.
>
> What is the procedure of replacing Brick2 on node2, can someone advice? I
can?t find anything relevant in documentation.
>
> Thanks in advance,
> Martin
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> --
> Davide Obbi
> Senior System Administrator
>
> Booking.com B.V.
> Vijzelstraat 66-80 Amsterdam 1017HL Netherlands
> Direct +31207031558
>  <https://www.booking.com/>
> Empowering people to experience the world since 1996
> 43 languages, 214+ offices worldwide, 141,000+ global destinations, 29
million reported listings
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