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List:       cassandra-dev
Subject:    Re: Problems with cassandra on AWS
From:       Alain RODRIGUEZ <arodrime () gmail ! com>
Date:       2016-07-11 20:32:00
Message-ID: CA+VSrLrfXjXRP0Wsd7g6XPyn62dRWMEYLvsEBPsTjK3Oa7NwgA () mail ! gmail ! com
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Hi Kant.

it looks like ec2 instances cannot talk to each other using public IP's


"talk to each other" --> port 7000 (if not using ssl, 7001 if using it).
Make sure this port is open. From IP_1: telnet ip_2 7000 will tell you if
the port is opened.

"using public IP's" --> Are you using Ec2Snitch or Ec2MultiRegionSnitch.
The former uses exclusively private IP (listen_address, rpc_address and
broadcast_address empty / commented). The latter uses public ip for
broadcast_address. You need then to make sure ports are open between the
private IPs.

Having a look at 'nodetool status' before running operations should help
you determine the current status for your cluster. Nodes should be showing
UN status (Up, Normal).

C*heers,
-----------------------
Alain Rodriguez - alain@thelastpickle.com
France

The Last Pickle - Apache Cassandra Consulting
http://www.thelastpickle.com

2016-07-11 10:02 GMT+02:00 Riccardo Ferrari <ferrarir@gmail.com>:

> I would check your security group settings, you need to allow
> communication on cassandra ports (ie 9042,...)
>
> On Mon, Jul 11, 2016 at 8:17 AM, daemeon reiydelle <daemeonr@gmail.com>
> wrote:
>
>> xWell, I seem to recall that the private IP's are valid for
>> communications WITHIN one VPC. I assume you can log into one machine and
>> ping (or ssh) the others. If so, check that cassandra.yaml is not set to
>> listen on 127.0.0.1 (localhost).
>>
>>
>> *.......*
>>
>>
>>
>> *Daemeon C.M. ReiydelleUSA (+1) 415.501.0198
>> <%28%2B1%29%20415.501.0198>London (+44) (0) 20 8144 9872
>> <%28%2B44%29%20%280%29%2020%208144%209872>*
>>
>> On Sun, Jul 10, 2016 at 4:54 PM, Kant Kodali <kant@peernova.com> wrote:
>>
>>> Hi Guys,
>>>
>>> I installed a 3 node Cassandra cluster on AWS and my replication factor
>>> is
>>> 3. I am trying to insert some data into a table. I set the consistency
>>> level of QUORUM at a Cassandra Session level. It only inserts into one
>>> node
>>> and unable to talk to other nodes because it is trying to contact other
>>> nodes through private IP and obviously that is failing so I am not sure
>>> how
>>> to change settings in say cassandra.yaml or somewhere such that
>>> rpc_address
>>> in system.peers table is updated to public IP's? I tried changing the
>>> seeds
>>> to all public IP's that didn't work as it looks like ec2 instances cannot
>>> talk to each other using public IP's. any help would be appreciated!
>>>
>>> Thanks,
>>> kant
>>>
>>
>>
>


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