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how do you prevent locking when you bring up a new node? --- without a snapshot
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Mark Niel  
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 More options Sep 20 2012, 6:27 pm
From: Mark Niel <markandmo...@gmail.com>
Date: Thu, 20 Sep 2012 15:27:02 -0700 (PDT)
Local: Thurs, Sep 20 2012 6:27 pm
Subject: how do you prevent locking when you bring up a new node? --- without a snapshot
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Hello,

Let's say I have a 3 cluster system with one of them being an arbiter.

One of the nodes (not the arbiter) does a hard crash that is unrecoverable.
How do you sync it without locking if you don't have a snapshot?

I know we can do snapshots, and I believe there is a extrabackup with
galera option.
Let's assume you can't snapshot it for whatever reason.
Does adding the new node lock the primary node? The arbiter doesn't have
the data, so there is only one node with data.

Thanks!
Mark


 
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Alex Yurchenko  
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 More options Sep 21 2012, 3:46 am
From: Alex Yurchenko <alexey.yurche...@codership.com>
Date: Fri, 21 Sep 2012 10:46:31 +0300
Local: Fri, Sep 21 2012 3:46 am
Subject: Re: how do you prevent locking when you bring up a new node? --- without a snapshot
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On 2012-09-21 01:27, Mark Niel wrote:

> Hello,

> Let's say I have a 3 cluster system with one of them being an
> arbiter.

> One of the nodes (not the arbiter) does a hard crash that is
> unrecoverable.
> How do you sync it without locking if you don't have a snapshot?

> I know we can do snapshots, and I believe there is a extrabackup with
> galera option.
> Let's assume you can't snapshot it for whatever reason.
> Does adding the new node lock the primary node? The arbiter doesn't
> have
> the data, so there is only one node with data.

in that case you should use xtrabackup snapshot transfer. It is
practically non-blocking (unless you have significant data in myisam
tables)

> Thanks!
> Mark

--
Alexey Yurchenko,
Codership Oy, www.codership.com
Skype: alexey.yurchenko, Phone: +358-400-516-011

 
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