We are expecting to deploy it on amazon cloud ec2, if it may help. I am sure people would have deployed Cassandra data centers in different regions on cloud before. But I am unable to find documentation of any such deployment online.
Because of this multi-regions the public-private IP address issue is important. pankaj On Mon, Apr 25, 2011 at 4:55 PM, Milind Parikh <milindpar...@gmail.com>wrote: > It will be through an overlay n/w. unfortunately setting up such n/w is > complex. Look @ something like openvpn. > > If multicast is supported, it will be easier. With complex software such as > Cassandra, it is much better to go with the expected flow; rather than > devicing your own flows.....my2c. > > /*********************** > sent from my android...please pardon occasional typos as I respond @ the > speed of thought > ************************/ > > On Apr 25, 2011 5:27 AM, "pankaj soni" <pankajsoni0...@gmail.com> wrote: > > Hi, > > We have a scenario for which we are considering using apache Cassandra for > deployment for our data storage needs.The setup is to be spread across > multiple data centers in different regions(physical locations). With each > data center having multiple nodes. However we can afford at most 1 public IP > address for each data center. With nodes inside the data center > communicating over private IP. We plan to use RF=3 and > OldNetworkTopologyStrategy > for replica placement. > > > 1 . This leads us to question that how will node discovery take place and > how will Cassandra ring be formed between multiple data centers? > > 2. How is data partitioning to be carried on in this scenario? > > 3. If say data resides in Data center 1 node 2 and read query is sent to > Data center 2 node 1, assuming it DC2 has no local replica than how is read > query to be serviced? This is our biggest concern as articles relating to > public/private IPs for cassandra could not be found. > > > As in Cassandra any node can be queried for data and same goes for write > requests, cassandra is our first choice in environments we have to deploy. > > Any suggestion is welcome. > > pankaj > >
