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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Configuring multiple nodes
Date Mon, 21 Sep 2009 03:52:49 GMT
Could you mention this on http://wiki.apache.org/cassandra/RunningCassandra ?

On Sun, Sep 20, 2009 at 10:46 PM, Anthony Molinaro
<anthonym@alumni.caltech.edu> wrote:
> One other gotcha I've come across trying to use jmx was on machines with
> multiple interfaces.  The rmi server doesn't always bind to the one
> you want.  I add this to my JVM_OPTS in cassandra.in.sh
>
> -Djava.rmi.server.hostname=$IP
>
> where IP is
>
> IP=`/sbin/ifconfig  | grep 'inet addr:' | grep -v '127.0.0.1' | cut -d: -f2 |
> awk '{ print $1}'`
>
> This cause the rmi server to bind to the appropriate address for the vmware
> I run this in, allowing me to connect via jconsole running on the host OS.
>
> I use the same thing in EC2 but the ip address is gotten from a tool which
> queries the interfaces setup by the ami and finds the right one.
>
> -Anthony
>
> On Sun, Sep 20, 2009 at 09:09:29PM -0500, Eric Evans wrote:
>> On Sun, 2009-09-20 at 09:42 +0930, Chris Were wrote:
>>
>> > *sigh* I should have tried turning iptables off -- I can now see both
>> > nodes. Thanks :)
>> >
>> >
>> > That being said, I'm no expert in iptables rules. This is what I added
>> > for cassandra, what rules do others use?
>> >
>> >
>> > -A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 9160
>> > -j ACCEPT
>> > -A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 7000
>> > -j ACCEPT
>> > -A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 7001
>> > -j ACCEPT
>> > -A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 8888
>> > -j ACCEPT
>>
>> Assuming that you are using defaults, and you want to use nodeprobe (or
>> any other jmx client) remotely then you'll also need to open tcp/8080.
>>
>> --
>> Eric Evans
>> eevans@rackspace.com
>>
>
> --
> ------------------------------------------------------------------------
> Anthony Molinaro                           <anthonym@alumni.caltech.edu>
>

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