[SR-Users] Kamailio Asterisk integration with docker DNS Problem

Fred Posner fred at palner.com
Sat Jul 13 15:36:54 CEST 2019

The error indicates kamailio can not resolve the location of asterisk2. Try checking the dns (can you resolve it on the kamailio box?) or using the IP. 

-- Fred

> On Jul 13, 2019, at 07:09, Amir <gheshlaghy at gmail.com> wrote:
> Hi
> I have created a kamailio container with docker and two asterisk container
> And this is my dispatcher list:
> 1 sip:asterisk:5060
> 1 sip:asterisk2:5060
> and this is my both asterisk SIP.conf
> [Kamailio]
> host=kamailio
> port=5060
> insecure=invite
> type=friend
> context=from-internal
> The problem is that I use User-defined networks which has its own DNS
> when a container starts a dns record would be set
> If I start a kamailio first then start two asterisks the asterisk works fine
> because the name "kamailio" has been set in docker dns
> but I should restart the kamailio because at startup It could not resolve astersik dns records
> after the everything works fine but if the any of the asterisk instances crash/stop kamailio
> can not detect that because a dns record would not be available:
> 17(22) ERROR: <core> [core/resolve.c:1684]: sip_hostport2su(): could not resolve hostname: "asterisk2"
> 17(22) ERROR: tm [ut.h:309]: uri2dst2(): failed to resolve "asterisk2"
> 17(22) ERROR: tm [uac.c:452]: t_uac_prepare(): no socket found
> 17(22) ERROR: dispatcher [dispatch.c:3110]: ds_ping_set(): unable to ping [sip:asterisk2:5060]
> It is kind of loop , I think maybe I can fix asterisk problem with asterisk realtime and
> set the sip.conf in database. 
> anyone has any suggestion for this problem?
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