There's no reason you can't run on multiple cloud providers as long as you treat them as logically distinct DC's. It should largely work the same way as running in several AWS regions, but you'll need to use something like GossipingPropertyFileSnitch because the EC2 snitches are specific to AWS.
On Thu Nov 27 2014 at 2:26:27 AM Spico Florin <spicoflo...@gmail.com> wrote: > Hello! > I have another question. What about the following scenario: two > Cassandra instances installed on different cloud providers (EC2, Flexiant)? > How do you synchronize them? Can you use some internal tools or do I have > to implement my own mechanism? > Thanks. > Florin > > > On Thu, Nov 27, 2014 at 11:18 AM, Spico Florin <spicoflo...@gmail.com> > wrote: > >> 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 >>> >>> >> >> >
