Hi,
There is an instruction how to switch to a different snitch in datastax docs: https://docs.datastax.com/en/cassandra/3.0/cassandra/operations/opsSwitchSnitch.html Personally I haven't tried to change Ec2 to Ec2Multi, but my understanding is that as long as 'dc' and 'rack' values are left unchanged for all nodes after changing snitch, the shouldn't be any issues. But it's just my guess, you have to test this procedure in non-prod env before making this change in prod. Also, consider using GossipingPropertyFileSnitch which requires some additional configuration in AWS (editing cassandra-racdc.properties file) comparing to native AWS snitches, gives more flexibility. Regards, Kyrill ________________________________ From: srinivasarao daruna <sree.srin...@gmail.com> Sent: Friday, August 10, 2018 5:14:30 PM To: user@cassandra.apache.org Subject: Re: Extending Cassandra on AWS from single Region to Multi-Region Hey All, Any info on this topic.? Thank You, Regards, Srini On Wed, Aug 8, 2018, 9:46 PM srinivasarao daruna <sree.srin...@gmail.com<mailto:sree.srin...@gmail.com>> wrote: Hi All, We have built Cassandra on AWS EC2 instances. Initially when creating cluster we have not considered multi-region deployment and we have used AWS EC2Snitch. We have used EBS Volumes to save our data and each of those disks were filled around 350G. We want to extend it to Multi Region and wanted to know the better approach and recommendations to achieve this process. I agree that we have made a mistake by not using EC2MultiRegionSnitch, but its past now and if anyone faced or implemented similar thing i would like to get some guidance. Any help would be very much appreciated. Thank You, Regards, Srini
