Re: how do you prevent locking when you bring up a new node? --- without a snapshot

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Re: how do you prevent locking when you bring up a new node? --- without a snapshot Alexey Yurchenko 9/21/12 12:46 AM
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