[asterisk-users] Asterisk stopped after Internet connection dropped ?! Asterisk 1.4.26.1

[Lyle Giese]

bruce bruce wrote:
> I am not sure why it would be sleeping. I have never dealt with
> putting a linux server to sleep. It is connected to a UPS, but I don't
> think it has been put to sleep by the UPS as the USB cable from UPS is
> not connected to it.
>
> Can you please elaborate on what you mean by AMI:Ping? Is there a
> service that you recommand that does this or are there any opensource
> monitoring tools out there that I can use?
>
> But my main question remains why there are no activities on 24th and 25th?
>
>
> This is what I see in the /var/log/messages.1:
>
> Jul 23 17:11:55 elastix last message repeated 20 times
> Jul 23 17:22:51 elastix last message repeated 38 times
> Jul 23 17:30:39 elastix last message repeated 26 times
> Jul 23 17:30:39 elastix last message repeated 45 times
> Jul 23 19:09:42 elastix ntpd[3113]: synchronized to 216.216.216.216,
> stratum 2
> Jul 23 20:17:44 elastix ntpd[3113]: synchronized to 216.216.216.216,
> stratum 2
> Jul 23 21:29:16 elastix dhclient: DHCPREQUEST on eth0 to 192.168.1.254
> port 67
> Jul 23 21:29:16 elastix dhclient: DHCPACK from 192.168.1.254
> Jul 23 21:29:16 elastix dhclient: bound to 192.168.1.100 -- renewal in
> 37640 seconds.
> Jul 26 09:22:37 elastix syslogd 1.4.1: restart.
> Jul 26 09:22:37 elastix kernel: klogd 1.4.1, log source = /proc/kmsg
> started.
> Jul 26 09:22:37 elastix kernel: Linux version 2.6.18-164.el5
> (mockbuild at builder16.centos.org
> <mailto:mockbuild at builder16.centos.org>) (gcc version 4.1.2 20080704
> (Red Hat 4.1.2-46)) #1 SMP Thu Se$
> Jul 26 09:22:37 elastix kernel: BIOS-provided physical RAM map:
>
> Morning of the 26th at 9:22 the server was restarted because it was
> un-reachable from outside and hence the restart log but where is the
> 24th, and 25th?
>
> Thanks,
> Bruce
>
> On Thu, Jul 29, 2010 at 9:10 AM, Paul Belanger
> <paul.belanger at polybeacon.com <mailto:paul.belanger at polybeacon.com>>
> wrote:
>
>     On Wed, Jul 28, 2010 at 9:06 PM, bruce bruce <bruceb444 at gmail.com
>     <mailto:bruceb444 at gmail.com>> wrote:
>     > See the jump from Jul 23rd to Jul 26th. Is this an indication of
>     Asterisk
>     > being down?
>     >
>     No, it just means there was no logger activity for those days.  You
>     need to add a monitoring solution to your Asterisk box (IE: AMI:
>     Ping).
>
>     --
>     Paul Belanger | dCAP
>     Polybeacon | Consultant
>     Jabber: paul.belanger at polybeacon.com
>     <mailto:paul.belanger at polybeacon.com> | IRC: pabelanger (Freenode)
>     blog.polybeacon.com <http://blog.polybeacon.com>
>
>     --
>
It's 'well known' that Asterisk gets confused and runs around in a very
tight loop when DNS resolution is failing.  Asterisk does a lot of DNS
queries and when the Internet goes down, that puts Asterisk into a loop. 

Depending on your machine, I am guessing that Asterisk locked up or
dropped out on the 23rd and the restart on the 26th brought it back to life.

Nagios is a good choice for monitoring servers and services.  I use it
here to monitor all the servers and SIP on my Asterisk box.

Lyle Giese
LCR Computer Services, Inc.

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