cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Milind Parikh <milindpar...@gmail.com>
Subject Re: IP address resolution in MultiDC setup
Date Mon, 25 Apr 2011 16:11:35 GMT
@Sasha
Very interesting that you find a big difference in latency between nodes.
Any hypothesis on what is going on in internal aws routing that makes it
inefficient?
Milind





On Mon, Apr 25, 2011 at 9:48 AM, Sasha Dolgy <sdolgy@gmail.com> wrote:

> 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...
> >>>
> >>>
> >>
>

Mime
View raw message