31 Jan
2017
31 Jan
'17
11:49 a.m.
Hello
Thanks, I will have a look
Alesio
On Tue, Jan 31, 2017 at 11:47 AM, Daniel-Constantin Mierla <
miconda(a)gmail.com> wrote:
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 <
miconda(a)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 <jeremygadd(a)gmail.com>
wrote:
Daniel-Constantin Mierlawww.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
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 <jeremygadd(a)gmail.com>
wrote:
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
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--
Daniel-Constantin Mierlawww.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
-- Put the hostname in dispatcher (no port) and
enable these:
On Wed, Jan 25, 2017 at 9:30 AM, Casco, Alessio <
alessio.casco(a)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
>
>
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>
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