@Sean -> You can manually change the ports used by Datastax agent using the address.yaml file in the agent install directory.
+1 on using racks to separate it out... but it will increase operational complexity somewhat On 26 May 2015 at 08:11, Nate McCall <n...@thelastpickle.com> wrote: > >> If you're running multiple nodes on a single server, vnodes give you no >> control over which instance has which key (whereas you can assign initial >> tokens). Therefore you could have two of your three replicas on the same >> physical server which, if it goes down, you can't read or write at quorum. >> > > Yep. You *will* have overlapping ranges on each physical server so long as > Vnodes > 'number of nodes in the cluster'. > > > >> >> However, can't you use the topology snitch to put both nodes in the same >> rack? Won't that prevent the issue and still allow you to maintain quorum >> if a single server goes down? If I have a 20-node cluster with 2 nodes on >> each physical server, can I use 10 racks to properly segment my partitions? >> > > That's a good point, yes. I'd still personally prefer the operational > simplicity of simply spacing out token assignments though, but YMMV. > > > > -- > ----------------- > Nate McCall > Austin, TX > @zznate > > Co-Founder & Sr. Technical Consultant > Apache Cassandra Consulting > http://www.thelastpickle.com > -- Ben Bromhead Instaclustr | www.instaclustr.com | @instaclustr <http://twitter.com/instaclustr> | (650) 284 9692
