Hello, Rob! Thank you very much for the detailed support. Regards, Florin
On Wed, Nov 26, 2014 at 12:41 AM, Robert Coli <rc...@eventbrite.com> wrote: > On Tue, Nov 25, 2014 at 7:09 AM, Spico Florin <spicoflo...@gmail.com> > wrote: > >> 1. For ensuring high availability I would like to install one Cassandra >> cluster on one availability zone >> (on Amazon EC2 US-east) and one Cassandra cluster on other AZ (Amazon EC2 >> US-west). >> > > One cluster, replication factor of 2, cluster configured with a rack aware > snitch is how this is usually done. Well, more accurately, people usually > deploy with at least RF=3 and across 3 AZs. A RF of at least 3 is also > required to use QUORUM Consistency Level. > > If you will always operate only out of EC2, you probably want to look into > the EC2Snitch. If you plan to ultimately go multi-region, > EC2MultiRegionSnitch. If maybe hybrid in the future, > GossipingPropertyFileSnitch. > > > http://www.datastax.com/documentation/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html > > http://www.datastax.com/documentation/cassandra/2.0/cassandra/architecture/architectureSnitchEC2MultiRegion_c.html > > http://www.datastax.com/documentation/cassandra/2.0/cassandra/architecture/architectureSnitchGossipPF_c.html > > For some good meta on the internals here : > > https://issues.apache.org/jira/browse/CASSANDRA-3810 > > =Rob > http://twitter.com/rcolidba > >
