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

Amir gheshlaghy at gmail.com
Sun Jul 14 12:20:54 CEST 2019


Hi Henning
Thank you for clearing that up, I have 3 problem which you have mentioned 2
of them:
- because of the missing DNS entry your Kamailio would not (re)start
properly: I tried flag 16  as you mentioned but still dose not work
1 sip:asterisk:7060 16
1 sip:asterisk2:7060 16
1 sip:asterisk3:7060 16
- because of the missing DNS entry the dispatcher module would not detect
the asterisk server as "down"
- because of the missing DNS entry my Asterisks would not (re)start properly
maybe I should try asterisk realtime for the last problem

I can make it work like this:
Start Kamailio first Then start asterisk containers Then restart astersik

Cheers
Amir


On Sun, Jul 14, 2019 at 1:31 PM Henning Westerholt <hw at skalatan.de> wrote:

> Hello Amir,
>
> what is your issue exactly:
>
> - because of the missing DNS entry the dispatcher module would not detect
> the asterisk server as "down"
>
> - because of the missing DNS entry your Kamailio would not (re)start
> properly
>
> You could try with flag 16 to disable DNS resolution at startup in your
> dispatcher file:
>
>
> https://kamailio.org/docs/modules/5.2.x/modules/dispatcher.html#idm1020020140
>
> Cheers,
>
> Henning
> Am 14.07.19 um 09:33 schrieb Amir:
>
> I do not have a DNS server, Docker User-defined networks has it's own
> built in DNS server,
> The problem is when I stop a container its DNS record would be deleted and
> therefore kamailio server could not check server health.
> I think if I could tell kamailio server that IF you did not find a DNS
> record it means that a server is down my solution would work.
>
> On Sat, Jul 13, 2019 at 10:56 PM Mojtaba <mespio at gmail.com> wrote:
>
>> Hello,
>> Did you add SRV record for each server in your DNS server?
>>
>> On Sat, Jul 13, 2019 at 6:07 PM Fred Posner <fred at palner.com> wrote:
>> >
>> > 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?
>> >
>> > _______________________________________________
>> > Kamailio (SER) - Users Mailing List
>> > sr-users at lists.kamailio.org
>> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>> >
>> > _______________________________________________
>> > Kamailio (SER) - Users Mailing List
>> > sr-users at lists.kamailio.org
>> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>>
>> --
>> --Mojtaba Esfandiari.S
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing Listsr-users at lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
> --
> Henning Westerholt - https://skalatan.de/blog/
> Kamailio services - https://skalatan.de/services
>
>
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