Hello, someone published a npm package for etcd-based discovery service, which sounds similar to what you want to do:
- https://www.kamailio.org/w/2015/10/kamailio-dispatcher-discovery-service-with-nodejs-and-etcd/ Alternative to dispatcher, you can also consider using rtjson module to push back destinations to kamailio in a json document via some API service. But if you want to watch the state of destinations, then dispatcher is the way to go. Cheers, Daniel On 31/01/2017 11:28, Casco, Alessio wrote: > Hello Daniel! > > My goal is the following: I would like to use a service discovery > application (consul is an example) that dynamically guides the > kamailio back-ends. As soon as a new back-end registers into the > discovery service, kamailio will start sending traffic to it. > > Since writing a module is not an option right now, I though about > using DNS and SRV records to achieve the same result, doing so I will > be able to instruct kamailio dynamically, the idea of the dispatcher > group, came in my mind only because I'd like to have something outside > the main kamailio config, so in the case I have to change the name or > do some adjustments, I don't have to restart the entire kamailio but > use a RPC command for example. > > Thanks > Alessio > > On Mon, Jan 30, 2017 at 4:20 PM, Daniel-Constantin Mierla > <mico...@gmail.com <mailto:mico...@gmail.com>> wrote: > > Hello, > > if you expect that dispatcher module will list the associated ip > addresses with the hostname after a DNS SRV lookup, then this is > not available. > > Dispatcher module will still use the single hostname to set r-uri > (or dst uri) and then TM module does the lookup before sending, > inside t_relay(). Also, irc, the keepalive is sent only to the > first ip resolved for a hostname. > > If you want to relay on DNS SRV for loadbalancing, you don't need > dispatcher at all, everything is done transparently for > configuration file by tm and core. > > Maybe you can detail a bit more what you want to achieve with > dispatcher on this topic and we can think of alternatives, > > Cheers, > Daniel > > > On 26/01/2017 11:34, Casco, Alessio wrote: >> Thanks for your help, >> >> Unfortunately with kamailio 4.4.4, dispatcher module and your >> suggestions, I still don't see the SRV record picked up (at least >> using the kamcmd dispatcher.list command). >> >> I didn't try the LCR module yet, I want to be sure first that >> dispatcher is not able to handle SRV first >> >> Thanks >> Alessio >> >> On Wed, Jan 25, 2017 at 8:06 PM, Jeremy Gadd >> <jeremyg...@gmail.com <mailto:jeremyg...@gmail.com>> wrote: >> >> Holy cow, sorry about that! >> >> Put the hostname in dispatcher (no port or _sip._udp) and >> enable these: >> >> use_dns_cache=on >> use_dns_failover=on >> dns_srv_lb=on >> >> That's how I got it working (using the LCR module). >> >> On Wed, Jan 25, 2017 at 1:05 PM, Jeremy Gadd >> <jeremyg...@gmail.com <mailto:jeremyg...@gmail.com>> wrote: >> >> Put the hostname in dispatcher (no port) and enable these: >> >> >> On Wed, Jan 25, 2017 at 9:30 AM, Casco, Alessio >> <alessio.ca...@nexmo.com >> <mailto:alessio.ca...@nexmo.com>> wrote: >> >> Hello Guys! >> >> I'd like to be able to use SRV records inside >> dispatcher groups, so I can automatise the discovery >> of new backends on my network using DNS >> >> I've tried with the following formats into the >> dispatcher.list file: >> >> $group _sip._udp.sip-voice_backends >> $group sip-voice_backends >> >> and none looks to be working, running >> the kamailio_ctl dispatcher.list won't show me the >> group set with SRV records. ( I also try NAPTR >> records, with no luck as well.) >> >> * Does the dispatcher module support SRV or NAPTR >> records? (maybe my format is not correct) >> * If not, do you have any other idea on what I could >> do to achieve what I'd like to do? >> >> Thanks >> Alessio >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - >> sr-users mailing list >> sr-users@lists.sip-router.org >> <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users> >> >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users >> mailing list >> sr-users@lists.sip-router.org >> <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users> >> >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users> > > -- > Daniel-Constantin Mierla > www.twitter.com/miconda <http://www.twitter.com/miconda> -- > www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda> > Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - > www.asipto.com <http://www.asipto.com> > Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com > <http://www.kamailioworld.com> > -- Daniel-Constantin Mierla www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com
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