[mythtv-users] Mythbackend randomly dies

[Nick Rout]

On Tue, Aug 12, 2008 at 3:04 PM, Nick Rout <nick.rout at gmail.com> wrote:
> On Tue, Aug 12, 2008 at 10:59 AM, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
>> Hi
>>
>> 2008/8/12 Tino Keitel <tino.keitel at gmx.de>:
>>> I guess that this will fail to restart mythbackend if there is a shell
>>> where you watch the backend log using less /var/log/mythbackend.log or
>>> something similar.
>>
>> that's correct ; that's also why I wrote not to call this script mythbackend.sh
>>
>> However, if you're watching the log, you logged on the machine and
>> will probably restart mythbackend manually anyway
>
> Some people tend to leave tail -f logfile going all the time inside
> screen or the like. If I have a number of log files I often look at on
> a machine I leave them set up in a screen session and log in from
> anywhere and start screen -dr and can flick through the logs without
> specifically starting them.
>
> So what i am saying is just cos you seem to be watching
> mythbackend.log you aren't necessarily logged in.
>
> There are daemon oversight daemons designed for servers and the like
> that detect the shutdown of a daemon and restart it. One of these
> programs have already invented this wheel. They generally work by
> starting the daemon and then saving its pid in a known place. If the
> pid disappears, then they restart the daemon. Just like Joe suggested
> :-)
>

Oh and another option is to start out of inittab with a respawn
statement, but that can be hard to stop! And occasionally you do need
to stop mythbackend, to reconfigure cards or something.