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From Dave Viner <davevi...@gmail.com>
Subject Re: Cassandra nodes on EC2 in two different regions not communicating
Date Wed, 23 Feb 2011 16:09:12 GMT
Try using the IP address, not the dns name in the cassandra.yaml.

If you can telnet from one to the other on port 7000, and both nodes have
the other node in their config, it should work.

Dave Viner


On Wed, Feb 23, 2011 at 1:43 AM, Himanshi Sharma <himanshi.sharma@tcs.com>wrote:

>
> Ya they do. Have specified Public DNS in seed field of each node in
> Cassandra.yaml...nt able to figure out what the problem is ???
>
>
>
>
>  From: Sasha Dolgy <sdolgy@gmail.com> To: user@cassandra.apache.org Date: 02/23/2011
> 02:56 PM Subject: Re: Cassandra nodes on EC2 in two different regions not
> communicating
> ------------------------------
>
>
>
> did you define the other host in the cassandra.yaml ?  on both servers ....
> they need to know about each other
>
> On Wed, Feb 23, 2011 at 10:16 AM, Himanshi Sharma <*
> himanshi.sharma@tcs.com* <himanshi.sharma@tcs.com>> wrote:
>
> Thanks Dave but I am able to telnet to other instances on port 7000
> and when i run  ./nodetool --host *
> ec2-50-18-60-117.us-west-1.compute.amazonaws.com*<http://ec2-50-18-60-117.us-west-1.compute.amazonaws.com/>
ring... I can see only one node.
>
> Do we need to configure anything else in Cassandra.yaml or Cassandra-env.sh
> ???
>
>
>
>
>
>
>   From: Dave Viner <*daveviner@gmail.com* <daveviner@gmail.com>>  To: *
> user@cassandra.apache.org* <user@cassandra.apache.org>  Cc: Himanshi
> Sharma <*himanshi.sharma@tcs.com* <himanshi.sharma@tcs.com>>  Date: 02/23/2011
> 11:36 AM  Subject: Re: Cassandra nodes on EC2 in two different regions not
> communicating
>
>  ------------------------------
>
>
>
> If you login to one of the nodes, can you telnet to port 7000 on the other
> node?
>
> If not, then almost certainly it's a firewall/Security Group issue.
>
> You can find out the security groups for any node by logging in, and then
> running:
>
> % curl "*http://169.254.169.254/latest/meta-data/security-groups*<http://169.254.169.254/latest/meta-data/security-groups>"
>
>
> Assuming that both nodes are in the same security group, ensure that the SG
> is configured to allow other members of the SG to communicate on port 7000
> to each other.
>
> HTH,
> Dave Viner
>
>
> On Tue, Feb 22, 2011 at 8:59 PM, Himanshi Sharma <*himanshi.sharma@tcs.com
> * <himanshi.sharma@tcs.com>> wrote:
>
> Hi,
>
> I am new to Cassandra. I m running Cassandra on EC2. I configured Cassandra
> cluster on two instances in different regions.
> But when I am trying the nodetool command with ring option, I am getting
> only single node.
>
> How to make these two nodes communicate with each other. I have already
> opened required ports. i.e 7000, 8080, 9160 in respective
> security groups. Plz help me with this.
>
> Regards,
> Himanshi Sharma
>
>
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> --
> Sasha Dolgy*
> **sasha.dolgy@gmail.com* <sasha.dolgy@gmail.com>
>
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