I was making assumptions (sorry!), namely the goal to switching to vpc was getting "backend resources" (like cassandra) off the public internet.
Will On Thursday, June 5, 2014, Alain RODRIGUEZ <arodr...@gmail.com> wrote: > I think you can define VPC subnet to be public (to have public + private > IPs) or private only. > > Any insight regarding snitches ? What snitch do you guys use ? > > > 2014-06-05 15:06 GMT+02:00 William Oberman <ober...@civicscience.com > <javascript:_e(%7B%7D,'cvml','ober...@civicscience.com');>>: > >> I don't think traffic will flow between "classic" ec2 and vpc directly. >> There is some kind of gateway bridge instance that sits between, acting as >> a NAT. I would think that would cause new challenges for: >> -transitions >> -clients >> >> Sorry this response isn't heavy on content! I'm curious how this thread >> goes... >> >> Will >> >> On Thursday, June 5, 2014, Alain RODRIGUEZ <arodr...@gmail.com >> <javascript:_e(%7B%7D,'cvml','arodr...@gmail.com');>> wrote: >> >>> Hi guys, >>> >>> We are going to move from a cluster made of simple Amazon EC2 servers to >>> a VPC cluster. We are using Cassandra 1.2.11 and I have some questions >>> regarding this switch and the Cassandra configuration inside a VPC. >>> >>> Actually I found no documentation on this topic, but I am quite sure >>> that some people are already using VPC. If you can point me to any >>> documentation regarding VPC / Cassandra, it would be very nice of you. We >>> have only one DC for now, but we need to remain multi DC compatible, since >>> we will add DC very soon. >>> >>> Else, I would like to know if I should keep using EC2MultiRegionSnitch >>> or change the snitch to anything else. >>> >>> What about broadcast/listen ip, seeds...? >>> >>> We currently use public ip as for broadcast address and for seeds. We >>> use private ones for listen address. Machines inside the VPC will only have >>> private IP AFAIK. Should I keep using a broadcast address ? >>> >>> Is there any other incidence when switching to a VPC ? >>> >>> Sorry if the topic was already discussed, I was unable to find any >>> useful information... >>> >> >> >> -- >> Will Oberman >> Civic Science, Inc. >> 6101 Penn Avenue, Fifth Floor >> Pittsburgh, PA 15206 >> (M) 412-480-7835 >> (E) ober...@civicscience.com >> <javascript:_e(%7B%7D,'cvml','ober...@civicscience.com');> >> > > -- Will Oberman Civic Science, Inc. 6101 Penn Avenue, Fifth Floor Pittsburgh, PA 15206 (M) 412-480-7835 (E) ober...@civicscience.com
