Re: Cassandra multi-datacenter

2013-05-06 Thread aaron morton
The broadcast_address can be set manually without using the EC2MultiRegionSnitch. It's the address the node wants other nodes to talk to it on http://www.datastax.com/docs/1.2/configuration/node_configuration#broadcast-address You may find it easier to run a VPN between the colo nodes and the

Re: Cassandra multi-datacenter

2013-05-03 Thread Daning Wang
Thanks Jabbar and Aaron. Aaron - for broadcast_address , looks it is only working with EC2MultiRegionSnitch. but in our case, we will have one center in colo, and one center in ec2(sorry, did not make that clear, we'd like to replicate data from colo to EC2) So can we still use broadcast_address?

Re: Cassandra multi-datacenter

2013-05-02 Thread aaron morton
Look at the broadcast_address in the yaml file Cheers - Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 3/05/2013, at 9:10 AM, Jabbar Azam wrote: > I'm not sure why you want to use public Ip's in the other data centre. You're

Re: Cassandra multi-datacenter

2013-05-02 Thread Jabbar Azam
I'm not sure why you want to use public Ip's in the other data centre. You're cassandra nodes in the other datacentre will be accessible from the internet Personally I would use private IP addresses in the second data centre, on a different IP subnet. A VPN is your only solution if you want to ke

Cassandra multi-datacenter

2013-05-02 Thread Daning Wang
Hi all, We are deploying Cassandra on two data centers. there is slower network connection between data centers. Looks casandra should use internal ip to communicate with nodes in the same data center, and public ip to talk to nodes in other data center. We know VPN is a solution, but want to kno