[rabbitmq-discuss] Cluster Setup

Tim Watson tim at rabbitmq.com
Wed Jul 18 15:03:42 BST 2012


On 18 Jul 2012, at 14:12, mrajkovic wrote:

> Hi Matthias,
> 
> I did a netstat -p -l and i got the following:-
> 
> 
> Proto Recv-Q Send-Q Local Address           Foreign Address         State      
> PID/Program name
> tcp        0      0 127.0.0.1:4369          0.0.0.0:*               LISTEN     
> 1872/epmd
> 

How exactly did you run netstat to get this? You might something like *:epmd *:* LISTEN when running on Linux and something quite different on BSD (and derivatives like Darwin) so it'd help to know what OS/version you're running on that machine.

> i'm not sure why it is only listening on 127.0.0.1 ...
> 

I wouldn't be too concerned about that. For example, on two machines I'm running iske and frigg, I get:

+++++

t4 at iske $ netstat | grep LISTEN
t4 at iske $ netstat | grep epmd
tcp4       0      0  localhost.62696        localhost.epmd         CLOSE_WAIT 

+++++

t4 at frigg:~ $ telnet iske 4369
Trying 10.20.218.219...
Connected to iske.
Escape character is '^]'.

+++++

t4 at iske $ netstat | grep epmd
tcp4       0      0  10.20.xxx.219.epmd     10.20.xxx.230.52475    ESTABLISHED
tcp4       0      0  localhost.62696        localhost.epmd         CLOSE_WAIT 

+++++

Can you telnet similarly between machines? If not then you've almost certainly got either firewall/iptables configuration getting in the way, or the network configuration on mf-01 isn't quite right. What OS is that machine running and what does it's /etc/hosts configuration look like? Erlang sometimes needs a bit of convincing to get machines talking to each other, depending on the OS and network config. 

> Any ideas?
> 
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