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Date: Thu, 5 Jun 2014 09:06:59 -0400
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 <CAAjbL_m4yTTqoNSbWf83C6k13xh17JkONP3j2CngG2WSSe24LA@mail.gmail.com>
Subject: Re: VPC AWS
From: William Oberman <oberman@civicscience.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
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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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<div>I don&#39;t think traffic will flow between &quot;classic&quot; ec2 an=
d vpc directly. There is some kind of gateway bridge instance that sits bet=
ween, acting as a NAT. =C2=A0 I would think that would cause new=C2=A0chall=
enges for:<br>
</div><div>-transitions=C2=A0</div><div>-clients</div><div><br></div>Sorry =
this response isn&#39;t heavy on content! =C2=A0I&#39;m curious how this th=
read goes...<div><br></div><div>Will</div><div><span></span><br><div>On Thu=
rsday, June 5, 2014, Alain RODRIGUEZ &lt;<a href=3D"mailto:arodrime@gmail.c=
om">arodrime@gmail.com</a>&gt; wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi guys,<div><br></div><div=
>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 regar=
ding this switch and the Cassandra configuration inside a VPC.</div>


<div><br></div><div>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 t=
o 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, s=
ince we will add DC very soon.</div>


<div><br></div><div>Else, I would like to know if I should keep using EC2Mu=
ltiRegionSnitch or change the snitch to anything else.</div><div><br></div>=
<div>What about broadcast/listen ip, seeds...?</div><div><br></div><div>


We currently use public ip as for broadcast address and for seeds. We use p=
rivate ones for listen address. Machines inside the VPC will only have priv=
ate IP AFAIK. Should I keep using a broadcast address ?</div><div><br>

</div>
<div>Is there any other incidence when switching to a VPC ?</div><div><br><=
/div><div>Sorry if the topic was already discussed, I was unable to find an=
y useful information...</div></div>
</blockquote></div></div><br><br>-- <br>Will Oberman<br>Civic Science, Inc.=
<br>6101 Penn Avenue, Fifth Floor<br>Pittsburgh, PA 15206<br>(M) 412-480-78=
35<br>(E) <a href=3D"mailto:oberman@civicscience.com" target=3D"_blank">obe=
rman@civicscience.com</a><br>

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