Hi Simon, My intention for this is to create a pre-prod test environment - so having an exact replica of the data isn't an issue. Previously I have used the riak-admin backup/restore, but the file has grown to about 70GB, and so takes around a day to backup, copy and restore into a new cluster.
Multi-data centre replication looks interesting - and probably we'll end up using that for redundancy reasons. In the short term I'm looking for an as-quick-as-possible spawn of a new cluster, with as-accurate-as-possible data in there.. Asking too much?! Don't want to sound ungrateful ;) On 24 October 2012 01:07, Simon Vans-Colina <simo...@basho.com> wrote: > Hi David, Matt, > > We've just discussed this and its a bit tricky. For 4 servers with N=3 it > is possible to stop 2 nodes, (say 3 and 4) and then send a "force-remove" > command to the remaining servers (1 and 2). > > Then you could start (3 and 4), and send *them* a force-remove of (1 and > 2). > > This is risky because you're only guaranteed one replica of the data on > each of the new clusters. > > The other risk is that new data written to (1 and 2) will not be > replicated over to (3 and 4). Are you planning on re-joining the cluster > back up afterwards? > > There's better ways than doing "mitotis" (although i love the name). Look > into Multi Data Center Replication, or just add new nodes and do a > force-replace. If the data is small enough, you could use the backup commn > > Hope i got this right, i'm quite new to this myself. > > Cheers > > On Thu, Oct 18, 2012 at 10:35 PM, David Lowell <d...@go2ctv.com> wrote: > >> If I have a cluster of say, 4 nodes, is it possible to split that cluster >> into two clusters of 2 nodes, each with a full complement of the original >> cluster's data, while the data is continuously being served? Obviously, we >> would require that the data be small enough to fit on 2 nodes. >> >> Thanks for your help, >> >> Dave >> >> -- >> Dave Lowell >> d...@connectv.com >> >> >> _______________________________________________ >> riak-users mailing list >> riak-users@lists.basho.com >> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com >> >> > > > -- > Simon Vans-Colina - Client Services Engineer - Basho > > Tel:+44 744 791 4640 > Twitter: @simonvc > >
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