I've seen discussion of using the EIP but I do not have direct experience.
Others may be able to provide more help. Previous discussion http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Does-anybody-have-experience-with-running-Cassandra-in-Amazon-s-Virtual-Private-Cloud-VPC-td6335709.html cheers ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 25 May 2011, at 18:49, Marcus Bointon wrote: > On 25 May 2011, at 02:10, aaron morton wrote: > >> Check the listen_address and rpc_address in the yaml file for each node. I >> think they are normally set to the private and public respectively. > > On all modes, listen_address and rpc_address are blank and 0.0.0.0 > respectively, the seed node address uses an EC2 external elastic IP's DNS > name so that it resolves correctly to the seed's internal IP even if it > changes. Those settings work fine for my existing pair - starting and > stopping the instances (resulting in internal IP changes) doesn't break > anything. As far as I can see, setting fixed IPs in here is a recipe for > management nightmares on EC2. > > Sound sane? > > Marcus