Hey Justin, Since Riak is lockless, what is the best approach to pulling a distributed FS snapshot of the bitcask files across nodes? I assume if they're not close to each other, you'll have an issue if you have to restore a cluster.
-J On Sun, Jul 11, 2010 at 8:14 PM, Justin Sheehy <jus...@basho.com> wrote: > Hi, Jan. > > On Sun, Jul 11, 2010 at 8:53 PM, Jan Vincent <jvliwa...@gmail.com> wrote: > >> Given that riak is new in the database field, if ever I use riak in >> production, >> what would be the best way to back it up? I know that there's redundancy >> on the different nodes and NRW may be modifiable per request, but I'm >> wondering if there's a way to snapshot the dataset periodically -- at least >> until riak becomes provably battle tested. > > Riak is fairly battle-tested already: we were using its prior version > under Basho's own customer-facing applications in 2008, and a number > of external customers and users are in production today. That said, > even a solid distributed database needs to be backed up as there are > many reasons to have backups. > > The easiest and best way to back up Riak is, if you are using bitcask > (the default) as the backend, to simply back up the filesystem of your > nodes with whatever backup system you use for the rest of your > systems. Bitcask uses append-only files, and once it closes a file it > will never change the content of that file again. This makes it very > backup-friendly. > > If you are using a backend with less backup-friendly disk format (such > as innostore) then you can use the "riak-admin backup" command at > either the per-node or whole-cluster level to produce a > backend-independent snapshot that can be loaded back in via > "riak-admin restore". This method is much slower, will impose > additional load on your cluster when running, and requires that you > have a place to put the generated snapshot. However, it will work > regardless of backend and is also a simple if heavyweight way to > migrate to a cluster with a different configuration. > > -Justin > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
