Larry.Finger at lwfinger
Nov 30, 2009, 4:38 PM
Post #10 of 10
(867 views)
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On 11/30/2009 06:04 PM, Michael T. Dean wrote:
> On 11/30/2009 06:36 PM, Matthias Thyroff wrote:
>
>> On 11/28/2009 12:21 AM, Michael T. Dean wrote:
>>> On 11/27/2009 02:13 PM, Michael Harnden wrote:
>>>> On Tuesday 24 November 2009 12:56:03 pm Michael T. Dean wrote:
>>>>> How was monit set to monitor the backend's status? I need to know so
>>>>> I can try to figure out why monit is killing Myth.
>>>> # Monit control file
>>>> #
>>>> # Comments begin with a '#' and extend through the end of the line.
>>>> # Blank lines between program entries are ignored. Keywords are case
>>>> # insensitive. All path's MUST BE FULLY QUALIFIED, starting with '/'
>>>> #
>>>>
>>>> set daemon 30
>>>> set logfile /var/log/monit.log
>>>> set mail-format
>>>> { from: mike [at] XXXX}
>>>> set alert mike [at] XXXX # Send alert to system admin on any event
>>>> set httpd port 2812 and
>>>> allow XXXX.site
>>>> allow 192.168.1.0/255.255.255.0
>>>> allow 127.0.0.1
>>>> allow admin:monit # user 'admin' with password 'monit'
>>>>
>>>>
>>>> check process mythbackend with pidfile /var/run/mythtv/mythbackend.pid
>>>> #group mythtv
>>>> start program = "/etc/init.d/mythtv-backend restart"
>>>> stop program = "/etc/init.d/mythtv-backend stop"
>>>> # if failed port 6544 proto http then restart
>>>>
>>> Does this mean the mythbackend check is commented/doing nothing?
>>>> depends on mysql
>>>>
>>>> check process mysql with pidfile /var/run/mysqld/mysqld.pid
>>>> #group mythtv
>>>> start program = "/etc/init.d/mysql start"
>>>> stop program = "/etc/init.d/mysql stop"
>>>> if failed port 3306 then restart
>>> If so, would that mean that monit is restarting mysql over and over?
>>> (Ripping the MySQL server out from under Myth would cause problems.)
>> I also just found out that it is monit who is restarting my backend every
>> 2 minutes - that was a long way of way too much suffering.
>>
>> It seems that myth backend 0.22 does not write the
>> /var/run/myththv/mythbackend.pid file anymore - and monit used that file
>> for checking for the process. Fails, of course and restarts the service.
>>
>> From short investigation it seems there is no pid file at all anymore.
>>
>> This is where I stop today.
>>
>> Have a good day, thanks for the greatest tv software ever (well don't
>> know
>> any other, don't need to, either, because myth does what I need and much
>> more)
>
> Sounds like a problem with the *buntu mythbackend start scripts--perhaps
> introduced in the switch to upstart. I don't know whether it means that
> the monit config needs changing or whether the upstart script needs
> changing.
On openSUSE, the standard start script for mythbackend needed to be
modified. Initially it had the the -p switch as an argument to
startproc, but there was no pid file created. By moving it to _AFTER_
the starting of mythbackend ($MYTHBACKEND_BIN), then the pid file was
created. The resulting command is:
HOME=${MYTHBACKEND_HOME} /sbin/startproc \
-u ${MYTHBACKEND_USERID} -g ${MYTHBACKEND_GROUPID} \
$MYTHBACKEND_BIN --daemon -p /var/run/mythbackend.pid \
--logfile /var/log/mythtv/mythbackend.log \
$MYTHBACKEND_OPTIONS
Larry
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