We use anywhere from 3-5 seeds for clusters that have over 150 nodes. That should suffice for larger sizes too since they are only for initial discovery.
Seeds are used for ring discovery, so there really isn't a load
concern for them, afaict. Have enough to meet your availability
needs, including placement, and rock out.
On Sat, Apr 3, 2010 at 9:01 AM, Joseph Ruscio <firstname.lastname@example.org> wrote:
> Great, was looking for something like this just the other day. One question I'm still unclear on, when setting up multiple nodes, say 4-8 (or more) what's the suggested ratio of seed vs. non-seed nodes?
> On Apr 3, 2010, at 1:14 AM, Benjamin Black wrote:
>> Just added this to the wiki as it seemed a very frequent request on
>> irc: http://wiki.apache.org/cassandra/MultinodeCluster
>> Would very much appreciate feedback and edits to improve it.