Hi, We use to work on a single DC (EC2Snitch / SimpleStrategy). For latency reason we had top open a new DC in the US (us-east). We run C* 1.2.2. We don't use VPC.
Now we use: - 2 DC (eu-west, us-east) - EC2MultiRegionSnitch / NTS - public IPs as broadcast_address and seeds - private IPs as listen_address Yet we are experimenting some troubles (node can't reach itself, Could not start register mbean in JMX...), mainly because of the use of public IPs and the AWS inter-region communication. If someone has successfully setup this kind of cluster, I would like to know, if our configuration is correct and if I am missing something. I also would like to know what ports I have to open and either where I have to open them from. Any insight would be greatly appreciated.