Fwd: Gluster Volume Replication using 2 AWS instances on Autoscaling

[bernhard glomm <bernhard.glomm@xxxxxxxxxxx>]

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Bernhard Glomm
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Begin forwarded message:

From: bernhard glomm <bernhard.glomm@xxxxxxxxxxx>

Subject: Re: Gluster Volume Replication using 2 AWS instances on Autoscaling

Date: March 13, 2014 6:08:10 PM GMT+01:00

To: Vijay Bellur <vbellur@xxxxxxxxxx>

??? I thought  replace-brick was not recommended at the moment
in 3.4.2 on a replica 2 volume I use successfully:

volume remove-brick <vol-name>  replica 1 <brick-name>  force
# replace the old brick with the new one, mount another disk or what ever, than
volume add-brick <vol-name> replica 2 <brick-name> force
volume heal <vol-name>

hth

Bernhard


On Mar 13, 2014, at 5:48 PM, Vijay Bellur <vbellur@xxxxxxxxxx> wrote:

On 03/13/2014 09:18 AM, Alejandro Planas wrote:

Hello,

We have 2 AWS instances, 1 brick on each instance, one replicated volume
among both instances. When one of the instances fails completely and
autoscaling replaces it with a new one, we are having issues recreating
the replicated volume again.

Can anyone provide some light on the gluster commands required to
include this new replacement instance (with one brick) as a member of
the replicated volume?

You can probably use:

volume replace-brick <volname> <old-brick> <new-brick> commit force

This will remove the old-brick from the volume and bring in new-brick to the volume. self-healing can then synchronize data to the new brick.

Regards,
Vijay

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