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From Alain RODRIGUEZ <arodr...@gmail.com>
Subject Re: VPC AWS
Date Thu, 05 Jun 2014 13:14:43 GMT
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 <oberman@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 <arodrime@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) oberman@civicscience.com
>

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