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From Jon Haddad <>
Subject Re: can't reach cassandra outside my lan
Date Thu, 30 Nov 2017 18:42:21 GMT
Cassandra is listening on your localhost address,, not your laptop’s address on
the network.  Set rpc_address to the address on your network, or use rpc_interface and let
Cassandra figure it out.

> On Nov 30, 2017, at 10:38 AM, Andrea Giordano <> wrote:
> Hi, osx user here.
> I have installed a simple Cassandra db on my laptop and I would like to query it outside
the Lan.
> So I set port forwarding and port triggering on my router (vodafone station) to link
external 9042 to internal 9042.
> Moreover I set on cassandra.yaml the broadcast_rpc_address to my router ip.
> Unfortunately, when I try to connect using java api I obtain:
> Exception in thread "main" com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried for query failed (tried: /HERE_THERE_IS_ROUTER_IP:9042 (com.datastax.driver.core.exceptions.TransportException:
[/HERE_THERE_IS_ROUTER_IP:9042] Cannot connect))
> I noted that without setting broadcast_rpc_address I can reach Cassandra trough
so the database is active and running.
> I’ve also tried  
> lsof -n -i4TCP:9042 | grep LISTEN
> and I obtain 
> java    7555 giordano  184u  IPv4 0x513195612572e265      0t0  TCP (LISTEN)
> when I unset broadcast_rpc_address
> and no output when I set broadcast_rpc_address.
> Is the problem in the yaml settings on in the router settings?
> P.S.: I have also modifying listen_address in the same way, without good news.
> P.P.S: clearly each time I edited the yaml file I restarted cassandra

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