[SR-Users] Error opening Kamailio's FIFO
Daniel-Constantin Mierla
miconda at gmail.com
Wed Nov 28 08:33:35 CET 2018
It might be some change to the systemd configs or just kamailio didn't
start at that moment. I remember I faced a similar issue when the /tmp/
folder was a virtual one created by systemd for each app, so two apps
couldn't access each other the same /tmp/.
Anyhow, I would suggest to use /var/run/kamailio/ as the folder for fifo
and control socket files, it is considered a better practice from
security point of view, because /tmp is writable for everyone.
Cheers,
Daniel
On 27.11.18 20:38, Markus wrote:
> I just restarted kamailio and the fifo appeared directly in /tmp
>
> So sorry, no idea why it didn't work the last time. (I did restart
> kamailio on 8th of November, before I posted here).
>
> Sorry for wasting everyone's time.
>
> Regards
> Markus
>
> [root at voip14 ~]# ls -altr /tmp/
> total 8
> drwxrwxrwt. 2 root root 6 Dec 3 2016 .XIM-unix
> drwxrwxrwt. 2 root root 6 Dec 3 2016 .X11-unix
> drwxrwxrwt. 2 root root 6 Dec 3 2016 .font-unix
> drwxrwxrwt. 2 root root 6 Dec 3 2016 .Test-unix
> drwxrwxrwt. 2 root root 6 Dec 3 2016 .ICE-unix
> dr-xr-xr-x. 17 root root 4096 Dec 3 2016 ..
> drwx------ 3 root root 16 Jul 21 2017
> systemd-private-e65a999fb0a24807a4ecb73e06ed5560-mariadb.service-VCo53M
> prw-rw---- 1 kamailio kamailio 0 Nov 27 20:34 kamailio_fifo
> drwxrwxrwt. 8 root root 4096 Nov 27 20:34 .
>
>
>
> Am 27.11.2018 um 18:32 schrieb Daniel-Constantin Mierla:
>> Hello,
>>
>> was kamailio still running at that time? Was it restarted since your
>> previous email?
>>
>> Can you start kamailio and then look inside /tmp for folders line
>> /tmp/systemd-...? List their content and see if any of them has the
>> kamailio fifo file.
>>
>> The thing here is that systemd may create a virtual tmp for each
>> application, to isolate it from security point of view.
>>
>> Cheers,
>> Daniel
>>
>> On 27.11.18 18:05, Markus wrote:
>>> Hi,
>>>
>>> it contains "tmp" which is empty:
>>>
>>> [root at voip14 /]# ls -altr
>>> /tmp/systemd-private-e65a999fb0a24807a4ecb73e06ed5560-mariadb.service-VCo53M/
>>>
>>> total 4
>>> drwxrwxrwt 2 root root 6 Jul 21 2017 tmp
>>> drwx------ 3 root root 16 Jul 21 2017 .
>>> drwxrwxrwt. 8 root root 4096 Nov 27 03:10 ..
>>> [root at voip14 /]# ls -altr
>>> /tmp/systemd-private-e65a999fb0a24807a4ecb73e06ed5560-mariadb.service-VCo53M/tmp/
>>>
>>> total 0
>>> drwx------ 3 root root 16 Jul 21 2017 ..
>>> drwxrwxrwt 2 root root 6 Jul 21 2017 .
>>>
>>> Maybe mi_fifo module does not get loaded? How can I find out?
>>>
>>>
>>>
>>> Am 27.11.2018 um 13:27 schrieb Daniel-Constantin Mierla:
>>>> Hello,
>>>>
>>>> can you check what is inside the folder:
>>>>
>>>> /tmp/systemd-private-e65a999fb0a24807a4ecb73e06ed5560-mariadb.service-VCo53M/
>>>>
>>>>
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>> On 27.11.18 13:15, Markus wrote:
>>>>> @David: I think it's all correct:
>>>>>
>>>>> /etc/kamailio/kamailio.cfg:
>>>>>
>>>>> loadmodule "mi_fifo.so"
>>>>> # ----- mi_fifo params -----
>>>>> modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
>>>>>
>>>>> /etc/kamailio/kamctlrc:
>>>>>
>>>>> ## path to FIFO file
>>>>> FIFOPATH="/tmp/kamailio_fifo"
>>>>>
>>>>> @Daniel: Yes, kamailio is running:
>>>>>
>>>>> [root at voip14 kamailio]# ps auxww|grep kamailio
>>>>> kamailio 27242 0.0 0.4 295068 7784 ? S Nov08 0:00
>>>>> /usr/sbin/kamailio -P /var/run/kamailio.pid -m 64 -M 8 -u kamailio -g
>>>>> kamailio
>>>>> ...etc...
>>>>>
>>>>> Yes, I use systemd under CentOS Linux release 7.2.1511 (Core) and
>>>>> this
>>>>> is what /tmp looks like:
>>>>>
>>>>> [root at voip14 kamailio]# ls -altr /tmp/
>>>>> total 8
>>>>> drwxrwxrwt. 2 root root 6 Dec 3 2016 .XIM-unix
>>>>> drwxrwxrwt. 2 root root 6 Dec 3 2016 .X11-unix
>>>>> drwxrwxrwt. 2 root root 6 Dec 3 2016 .font-unix
>>>>> drwxrwxrwt. 2 root root 6 Dec 3 2016 .Test-unix
>>>>> drwxrwxrwt. 2 root root 6 Dec 3 2016 .ICE-unix
>>>>> dr-xr-xr-x. 17 root root 4096 Dec 3 2016 ..
>>>>> drwx------ 3 root root 16 Jul 21 2017
>>>>> systemd-private-e65a999fb0a24807a4ecb73e06ed5560-mariadb.service-VCo53M
>>>>>
>>>>> drwxrwxrwt. 8 root root 4096 Nov 27 03:10 .
>>>>> [root at voip14 kamailio]#
>>>>>
>>>>> There's nothing in there.
>>>>>
>>>>> What to do now?
>>>>>
>>>>> Thank you,
>>>>> Markus
>>>>>
>>>>>
>>>>> Am 13.11.2018 um 08:39 schrieb Daniel-Constantin Mierla:
>>>>>> Also be sure that kamailio is actually running.
>>>>>>
>>>>>> Be careful if you use systemd, because it can create a virtual /tmp
>>>>>> for each application, so they do not see the same files in /tmp
>>>>>> folder...
>>>>>>
>>>>>> Cheers,
>>>>>> Daniel
>>>>>>
>>>>>>
>>>>>> On 09.11.18 04:44, David Villasmil wrote:
>>>>>>>
>>>>>>> Verify both names are correct on kamailio.cfg and kamctlrc
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Nov 8, 2018, 14:35 Markus <universe at truemetal.org
>>>>>>> <mailto:universe at truemetal.org>> wrote:
>>>>>>>
>>>>>>> Hi list,
>>>>>>>
>>>>>>> when I run "/usr/sbin/kamctl address reload" I get:
>>>>>>>
>>>>>>> ERROR: Error opening Kamailio's FIFO /tmp/kamailio_fifo
>>>>>>> ERROR: Make sure you have the line 'modparam("mi_fifo",
>>>>>>> "fifo_name",
>>>>>>> "/tmp/kamailio_fifo")' in your config
>>>>>>> ERROR: and also have loaded the mi_fifo module.
>>>>>>>
>>>>>>> In /etc/kamailio/kamailio.cfg I have:
>>>>>>>
>>>>>>> loadmodule "mi_fifo.so"
>>>>>>>
>>>>>>> # ----- mi_fifo params -----
>>>>>>> modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
>>>>>>>
>>>>>>> But there's no fifo in /tmp.
>>>>>>>
>>>>>>> What am I doing wrong?
>>>>>>>
>>>>>>> kamailio-4.4.4-1.1.x86_64 on CentOS Linux release 7.2.1511
>>>>>>> (Core).
>>>>>>>
>>>>>>> Thank you!
>>>>>>> Markus
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Kamailio (SER) - Users Mailing List
>>>>>>> sr-users at lists.kamailio.org
>>>>>>> <mailto: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
>>>>>>
>>>>>> --
>>>>>> Daniel-Constantin Mierla --www.asipto.com
>>>>>> www.twitter.com/miconda --www.linkedin.com/in/miconda
>>>>>> Kamailio World Conference --www.kamailioworld.com
>>>>>> Kamailio Advanced Training, Nov 12-14, 2018, in Berlin
>>>>>> --www.asipto.com
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> 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
>>>>
>>>
>>>
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>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>
>
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--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference -- www.kamailioworld.com
Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- www.asipto.com
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