To be sure ports are open try to connect from one node to  another:

telnet <node ip> 7000

try all ports.

Andrey


On Wed, Aug 28, 2013 at 10:41 PM, Dinesh <dinesh.gaddam@gmail.com> wrote:
Hi John,

I had my firewall disabled in both the nodes
To make sure. I checked it
# rcSuSEfirewall2 status
Checking the status of SuSEfirewall2                                                                                                        unused

if it's, on it says running

Please suggest the further steps, where to look and troubleshoot, if you have any idea






On Thu, Aug 29, 2013 at 2:34 AM, John Pyeatt <john.pyeatt@singlewire.com> wrote:
Have you verified that your firewall is configured for the cassandra traffic. At the very least you need to make certain the following ports are open between nodes: 7000, 7001, 7199, 9160, 61620 and 61621.


On Wed, Aug 28, 2013 at 12:36 AM, Dinesh <dinesh.gaddam@gmail.com> wrote:
In my case rpc_address in both the nodes is set to 0.0.0.0 which means it listens on all interfaces. it has a larger scope (to listen on all localhost, ipv4, hostnames, ipv6 addresses) than providing just the hostname/ipv4 addresses

anyway I initially checked that, but it's the same exception I got in this case also




On Wed, Aug 28, 2013 at 10:40 AM, Naresh Yadav <nyadav.ait@gmail.com> wrote:

You would need to configure rpc_address also with hostname/ips on both the nodes.

Naresh

On Wed, Aug 28, 2013 at 10:15 AM, Dinesh <dinesh.gaddam@gmail.com> wrote:
Hi,

I am trying to setup a two node Cassandra cluster

Able to start the first node, but not seeing the following exception while starting the second node

ERROR 17:31:34,315 Exception encountered during startup
java.lang.IllegalStateException: Unable to contact any seeds!
        at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:947)
        at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:716)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:554)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:451)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:348)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:447)
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:490)
java.lang.IllegalStateException: Unable to contact any seeds!
        at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:947)
        at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:716)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:554)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:451)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:348)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:447)
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:490)
Exception encountered during startup: Unable to contact any seeds!
ERROR 17:31:34,322 Exception in thread Thread[StorageServiceShutdownHook,5,main]
java.lang.NullPointerException
        at org.apache.cassandra.service.StorageService.stopRPCServer(StorageService.java:321)
        at org.apache.cassandra.service.StorageService.shutdownClientServers(StorageService.java:370)
        at org.apache.cassandra.service.StorageService.access$000(StorageService.java:88)




=============================
My yaml configuration files have these modified


first node yaml
---------------
initial_token: -9223372036854775808 # generated this using tokengen tool
seeds: "10.96.19.207" # which is the IP of first node
listen_address: 10.96.19.207 # which is the IP of first node itself
rpc_address: 0.0.0.0

second node yaml
----------------
initial_token: 0
seeds: "10.96.19.207" # which is the IP of first node
listen_address: 10.96.10.223 # which is the IP of second node
rpc_address: 0.0.0.0


==================

Can anyone please help me what went wrong with my configuration?

Regards
Dinesh









--
Regards
Dinesh



--
John Pyeatt
Singlewire Software, LLC
www.singlewire.com
------------------
608.661.1184
john.pyeatt@singlewire.com



--
Regards
Dinesh