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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Replicating nodes through firewall
Date Thu, 17 Jun 2010 20:46:51 GMT
jmx does this fun thing where the node you're connecting to, connects
back to jconsole over a random port:
http://blogs.sun.com/jmxetc/entry/connecting_through_firewall_using_jmx

On Wed, Jun 16, 2010 at 7:34 AM,  <jeff@javajet.com> wrote:
> I am trying to set up replication among three cassandra nodes. I believe it
> is because I am not setting the correct seed hostnames in storage-conf.xml.
> How can I set up node communication through the NAT on firewall.
>
> Two nodes will be on my network with private ip 192.168.15.86 and
> 192.168.15.88. Port forwarding from my router's public ip to ONE internal
> node ip: 192.168.15.86. I have port forwarding to 192.168.15.86 set up for
> JMX port 8088 and cassandra port 9160.
>
> I am using the hosts file to define the ip numbers for the cassandra nodes:
> 192.168.15.86    node1_rocinante
> 192.168.15.88    node2_spork
> <<not shown>>            node3_rackspace
>
> I can not seem to communicate from my internal node to the cassandra node at
> rackspace over port 8088 using "nodetool" or jmx gui, although I can telnet
> to both 8088 and cassandra port 9160 from shell. Here are JMX JAVA OPTS for
> cassandra on my node:
>        -Dcom.sun.management.jmxremote.port=8088
>        -Dcom.sun.management.jmxremote.ssl=false
>        -Dcom.sun.management.jmxremote.authenticate=false
>        -Djava.rmi.server.hostname=node1_rocinante
>
>
>
> Here is the netstat output showing the private ip rackspace cassandra node
> 192.168.100.50 trying to handshake but failing because the nodes are
> assigned my private ip numbers 192.168.15.88, 192.168.15.86. For review,
> rackspace
>
>
> tcp        0      1 192.168.100.50:39671        192.168.15.88:7000
>  SYN_SENT    26725/java
> tcp        0      1 192.168.100.50:39670        192.168.15.86:7000
>  SYN_SENT    26725/java
>
>
> Here are what I think are pertinent example settings in the storage-conf.xml
> for an internal node:
> :
>
> ...
>  <Seeds>
>        <Seed>node1_rocinante</Seed>
>        <Seed>node2_spork</Seed>
>        <Seed>node3_rackspace</Seed>
> </Seeds>
> ...
>  <ListenAddress>node1_rocinante</ListenAddress>
>  <!-- internal communications port -->
>  <StoragePort>7000</StoragePort>
> ...
>
>
>
>
>
> Jeffrey Griffin, Developer
> JavaJet Consulting  LLC
>  o: 1.717.533.5557
> m: 1.717.419.2869
> skype: javajet.coder



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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