way too much overhead in case of systemd-services
http://www.freedesktop.org/software/systemd/man/systemd.service.html

the only case which is needs to be supported by the service
itself is "WatchdogSec=" for exactly this case which i
solved with the attached solution

any other sort of crash and termination is controlled
out-of-the-box by systemd itself with proper units

Am 19.08.2013 16:25, schrieb Harald Leithner:
> Nice, but you should really try monit. And M/Monit.
> 
> Am 19.08.2013, 16:18 Uhr, schrieb Reindl Harald <[email protected]>:
> 
>> i recently wrote a PHP Skript which is running in
>> an endless-loop and try to connect every 10 seconds
>> to 127.0.0.1 and receive the service-greeting
>>
>> if the connection fails or there is no response
>> "killall dbmail-imapd" or "killall dbmail-pop3d"
>>
>> on systemd-systems with "Restart=always" the "killall"
>> triggers the restart by systemd while prevent that
>> a for whatever reason manually stopped daemon get
>> fired up by a restart and this should catch the cases
>> from thursday where the processes refused to respond
>>
>> another script greps the syslog for "time over, scheduling restart"
>> twice an hour and triggers cronmails to take notice of this but
>> that does a lot of other things on the infrastructure and so no
>> way to publish ist
>>
>> anybody feel free to reuse these two units and the worker
>> on systemd-installations (yes, i know PHP is not the first
>> language for services, but the one i use regulary *gg*)
>> ________________________________________________________
>>
>> [root@mail:~]$ systemctl status monitor-dbmail-imapd.service
>> monitor-dbmail-imapd.service - monitor dbmail-imapd
>>    Loaded: loaded (/etc/systemd/system/monitor-dbmail-imapd.service; enabled)
>>    Active: active (running) since Mo 2013-08-19 16:07:16 CEST; 5min ago
>>  Main PID: 5209 (check-dbmail-se)
>>    CGroup: name=systemd:/system/monitor-dbmail-imapd.service
>>            └─5209 /usr/bin/php /usr/local/bin/check-dbmail-service.php 143 
>> dbmail-imapd
>>
>> [root@mail:~]$ systemctl status monitor-dbmail-pop3d.service
>> monitor-dbmail-pop3d.service - monitor dbmail-pop3d
>>    Loaded: loaded (/etc/systemd/system/monitor-dbmail-pop3d.service; enabled)
>>    Active: active (running) since Mo 2013-08-19 16:07:16 CEST; 5min ago
>>  Main PID: 5210 (check-dbmail-se)
>>    CGroup: name=systemd:/system/monitor-dbmail-pop3d.service
>>            └─5210 /usr/bin/php /usr/local/bin/check-dbmail-service.php 110 
>> dbmail-pop3d

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