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<div class="moz-cite-prefix">On 09/22/2017 02:25 AM, Kotresh
Hiremath Ravishankar wrote:<br>
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<div>The volume layout of geo-replication slave volume
could be different from master volume.<br>
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It's not mandatory that if the master volume is arbiter
type, the slave also needs to be arbiter.<br>
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But if it's decided to use the arbiter both at master and
slave, then the expansion rules is<br>
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applicable both at master and slave.<br>
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Adding Ravi for arbiter related question<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Sep 21, 2017 at
2:07 PM, Marcus <span dir="ltr"><<a
href="mailto:marcus.pedersen@slu.se"
target="_blank" moz-do-not-send="true">marcus.pedersen@slu.se</a>></span>
wrote:<br>
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<p>Hi all!</p>
Today I have a small gluster replication
on 2 machines.<br>
My plan is to scale this, I though need
some feedback that how I plan things is in
the right direction.<br>
<br>
First of all I have understood the need of
an arbiter.<br>
When I scale this, say that I just have 2
replica and 1 arbiter, when I add another
two machines can I still use the same
physical machine as the arbiter?<br>
Or when I add additional two machines I
have to add another arbiter machine as
well?<br>
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<br>
You can use the same physical machine for hosting multiple arbiter
bricks. The general rule of brick placement is the same for any type
of replica volume: No 2 bricks of the same replica subvolume should
be on the same node.<br>
<br>
Thanks,<br>
Ravi<br>
<br>
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My second question is about
geo-replication.<br>
If I want to setup a geo-replication on
above gluster cluster do I need to have
the exact "same" machines in the
reo-replication?<br>
I know that disk size should be same size
on both the brick and on the
geo-replication side.<br>
So if I have 2 replica and 1 arbiter, do I
need 2 replica and 1 arbiter for the
geo-replication?<br>
Or is it sufficient for a 2 replica and 1
arbiter to use 1 replica for the
geo-replication?<br>
What I wonder is when I scale my gluster
with additional 2 machines, do I need 2
machines for geo-replication or 1 machine
for geo-replication?<br>
So adding 2 machines means adding 4
machines in total or do I just need 3 in
total?<br>
Is there a need for a arbiter in the
geo-replication?<br>
<br>
Many questions, but I hope that you can
help me out!<br>
<br>
Many thanks in advance!<br>
<br>
Best regards<br>
Marcus Pedersén<br>
<br>
<br>
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<div>Thanks and Regards,<br>
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Kotresh H R<br>
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