… are no single point of failure. In an environment like EC2, where a node can disappear almost without notice, one would… present and identical, at least for the NDB part, in all hosts. Next the NDB configuration must use the hostname like: [NDBD...=/var/lib/mysql-cluster/ DataMemory=1G IndexMemory=100M [NDB_MGMD] Id=1 Hostname=mgmn1 [NDB_MGMD] Id=2 Hostname=mgmn2 [NDBD] Id…

…, so all inter-node traffic will go through the outside EC2 routers, which is slower, adds latency, and AWS will ding… elastic IP will have an associated dns name, such as ec2-50-16-238-173.compute-1.amazonaws.com. What’s….com, data2.example.com. And you use those in your ndb configs. Whenever they need to look for each other, the…

… from a customer that has 100% of its infrastructure on EC2. I had a bit of the same concerns you have… the customer for that. I am not saying that NDB cluster on EC2 performs better or even that it is on par…

… for what a customer would like to have a NDB cluster on EC2. I am particularly concern on the network traffic nodes…