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

Sun Jul 14 15:20:47 CEST 2019

If the dns resolution fails, don’t you get the event route
dispatcher:dst-down
 fired?
You could use that route to remove the entry from the dispatcher list.

David

On Sun, 14 Jul 2019 at 12:29, Amir <gheshlaghy at gmail.com> wrote:

> Thank you, Maybe I should develop a health check mechanism and save the
> result in kamailio db and after that:
> kamctl dispatcher reload
>
> On Sun, Jul 14, 2019 at 3:23 PM Sergey Safarov <s.safarov at gmail.com>
> wrote:
>
>> as option you can reload dispatcher table instead of kamailio restart.
>> kamctl dispatcher reload
>>
>>
>>
>> On Sun, Jul 14, 2019 at 1:27 PM Amir <gheshlaghy at gmail.com> wrote:
>>
>>> Sorry for mistyping :
>>> I can make it work like this:
>>> Start Kamailio first Then start asterisk containers Then restart
>>> *KAMAILIO*
>>>
>>>
>>> On Sun, Jul 14, 2019 at 2:50 PM Amir <gheshlaghy at gmail.com> wrote:
>>>
>>>> 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
>>>>>
>>>>> _______________________________________________
>>> Kamailio (SER) - Users Mailing List
>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>> _______________________________________________
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>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
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-- 
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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