@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 <sdo...@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" <pankajsoni0...@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 <pankajsoni0...@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 <milindpar...@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" <milindpar...@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" <pankajsoni0...@gmail.com> > >>> wrote: > >>> > > >>> > We are expecting t... > >>> > >>> pankaj > >>> > >>> > >>> > > >>> > > >>> > > >>> > On Mon, Apr 25, 2011 at 4:55 PM, Milind Parikh < > milindpar...@gmail.com> > >>> wrote: > >>> > > > >>> > It will be thro... > >>> > >>> > >> >
