Copying data between clusters
alanmc at swingvine.com
Sat May 8 14:27:15 EDT 2010
Is there a way to set a default N (and R/W) value across a cluster via
configuration? I know there's a default_props feature in configuration but
I don't know if it's possible to use that for default N/R/W values and I
don't know what the syntax is.
In case anyone was wondering I went ahead and tried a backup/restore between
production and test and it worked just fine. Restoring from a backup file
will work across different clusters.
On Fri, May 7, 2010 at 9:17 PM, Kevin Smith <ksmith at basho.com> wrote:
> Alan -
> I can't answer your replication questions -- don't have a lot of experience
> with it yet -- but I can take a stab at setting the global replication
> If I'm understanding correctly I believe you're referring to the N value. N
> controls how many replicas of an entry Riak stores, in total, around the
> cluster. Docs on tuning this value can be found here:
> On May 7, 2010, at 10:06 PM, Alan McConnell wrote:
> > • Is it possible to use the built-in backup/restore functions of
> riak-admin to copy data between clusters? The scenario is that we have
> separate test and production environments, each with separate riak clusters
> of different sizes and configurations. Every so often we'd like to copy the
> data from production into test. Can I run 'backup all' in prod, then run
> restore on the resultant file in test, and have everything work? Or does
> restore only work on the same cluster configuration that the backup was
> performed on? What's the easiest way of doing this?
> > • I've noticed that backup takes a very long time, and results in a
> file that is much larger than the actual cluster data directories of the
> cluster. Is this normal?
> > • Not related to backups, but how do I configure the global
> replication count of the cluster?
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