Hi Kenneth, Replies inline below.
On 12-Mar-2018 3:40 AM, "Kenneth Brotman" <kenbrot...@yahoo.com.invalid> wrote: Hi Kunal, That version of Cassandra is too far before me so I’ll let others answer. I was wonder why you wouldn’t want to end up on 3.0x if you’re going through all the trouble of migrating anyway? Application side constraints - some data types are different between 2.1.x and 3.x (for example, date vs. timestamp). Besides, this is production setup - so, cannot take risk. Are both data centers in the same region on AWS? Can you provide yaml file for us to see? No, they are in different regions - GCE setup is in us-east while AWS setup is in Asia-south (Mumbai) Thanks, Kunal Kenneth Brotman *From:* Kunal Gangakhedkar [mailto:kgangakhed...@gmail.com] *Sent:* Sunday, March 11, 2018 2:32 PM *To:* user@cassandra.apache.org *Subject:* Adding new DC? Hi all, We currently have a cluster in GCE for one of the customers. They want it to be migrated to AWS. I have setup one node in AWS to join into the cluster by following: https://docs.datastax.com/en/cassandra/2.1/cassandra/ operations/ops_add_dc_to_cluster_t.html Will add more nodes once the first one joins successfully. The node in AWS has an elastic IP - which is white-listed for ports 7000-7001, 7199, 9042 in GCE firewall. The snitch is set to GossipingPropertyFileSnitch. The GCE setup has dc=DC1, rack=RAC1 while on AWS, I changed the DC to dc=DC2. When I start cassandra service on the AWS instance, I see the version handshake msgs in the logs trying to connect to the public IPs of the GCE nodes: OutboundTcpConnection.java:496 - Handshaking version with /xx.xx.xx.xx However, nodetool status output on both sides don't show the other side at all. That is, the GCE setup doesn't show the new DC (dc=DC2) and the AWS setup doesn't show old DC (dc=DC1). In cassandra.yaml file, I'm only using listen_interface and rpc_interface settings - no explicit IP addresses used - so, ends up using the internal private IP ranges. Do I need to explicitly add the broadcast_address? for both side? Would that require restarting of cassandra service on GCE side? Or is it possible to change that setting on-the-fly without a restart? I would prefer a non-restart option. PS: The cassandra version running in GCE is 2.1.18 while the new node setup in AWS is running 2.1.20 - just in case if that's relevant Thanks, Kunal
