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From Sasha Dolgy <sdo...@gmail.com>
Subject Re: IP address resolution in MultiDC setup
Date Mon, 25 Apr 2011 13:48:08 GMT
We use vyatta to create a vip on each instance and act as the gateway in
each zone & region.  this allows us to bridge into our own facilities
outside of aws.  we still can leverage ec2snitch and find a big speed
difference wrt latency between nodes when by passing internal aws routing...
On Apr 25, 2011 3:30 PM, "pankaj soni" <pankajsoni0126@gmail.com> wrote:
> scrap the last mail, just finished reading Amazon ec2 resource policy.
>
> @milind when deploying cassandra across multiple dcs using your patch, is
it
> possible to have internal network of nodes in each data center talking
over
> private ip?
> then I assume the node with public ip will act as co-ordinator. If it goes
> down the link between data centers will be down?
>
> Thanks
> pankaj
>
> On Mon, Apr 25, 2011 at 6:09 PM, pankaj soni <pankajsoni0126@gmail.com
>wrote:
>
>> Just read your paper on this. Must say helped a great deal.
>>
>> 1 more query does amazon by default award both external and internal IP
>> address for each node? or we have to explicitly buy the external IP's?
>>
>> I am looking into overlay n/w's.
>>
>>
>> On Mon, Apr 25, 2011 at 5:20 PM, Milind Parikh <milindparikh@gmail.com
>wrote:
>>
>>> I stand corrected....I show how cassandra can be deployed in multiple
dcs
>>> through a simple patch; using public ips. In your scenario with an
overlay
>>> n/w, you will not require this patch.
>>>
>>> /***********************
>>> sent from my android...please pardon occasional typos as I respond @ the
>>> speed of thought
>>> ************************/
>>>
>>> On Apr 25, 2011 7:43 AM, "Milind Parikh" <milindparikh@gmail.com> wrote:
>>>
>>> I have authored exactly this paper....please search this ml. Please be
>>> aware about ec2's internal network as you design your deployment. Ec2
also
>>> does not support multicast; which is a pain,but not unsurmountable.
>>>
>>>
>>>
>>> /***********************
>>> sent from my android...please pardon occasional typos as I respond @ the
>>> ...
>>>
>>>
>>> >
>>> > On Apr 25, 2011 7:31 AM, "pankaj soni" <pankajsoni0126@gmail.com>
>>> wrote:
>>> >
>>> > We are expecting t...
>>>
>>> pankaj
>>>
>>>
>>> >
>>> >
>>> >
>>> > On Mon, Apr 25, 2011 at 4:55 PM, Milind Parikh <milindparikh@gmail.com
>
>>> wrote:
>>> > >
>>> > It will be thro...
>>>
>>>
>>

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