Noel,
>> If the check script fails, have it kill the program. Then the program
check will notice it's not running and restart it.
I like that idea! I should probably use an "EVERY" qualifier on the check
script statement to stay away from a race condition and give xyzzy some
time to get up and get established.
Thanks,
Steven
On Tue, Oct 9, 2018 at 5:11 PM Noel <[email protected]> wrote:
> If the check script fails, have it kill the program. Then the program
> check will notice it's not running and restart it.
>
> Or you can write everything into one script...
>
>
> -- Noel Jones
>
>
> On 10/9/2018 1:05 PM, Steven Christensen wrote:
>
> Noel,
>
> I see what you mean.
>
> But if check_xyzzy fails, how can I cause xyzzy to be restarted? I don't
> know of any way to have one check cause another check to be restarted.
>
> I was thinking more, and this may not be solvable with separate check
> statements.
> I may have to combine both the checking of the process and checking of the
> actual functioning of the feature in a single unified script, like this:
>
> =====================================
> check program xyzzy with path "/root/check_xyzzy.sh"
> start program "/root/start_xyzzy.sh"
> stop program /usr/bin/pkill -f "xyzzy"
> if status != 0 then restart
> =====================================
>
> where check_xyzzy.sh checks 2 things:
> 1) ps -ef | fgrep "xyzzy" -- to make sure the process exists
> 2) check the function that xyzzy provides, to make sure the function is
> working
>
> It would return a bad status if either of these fails.
>
> -- Steven
>
>
> On Tue, Oct 9, 2018 at 11:22 AM Noel <[email protected]> wrote:
>
>> You have it backwards. check_xyzzy depends on xyzzy.
>>
>> First run the process, then run the script to see if the process is
>> working.
>>
>>
>> -- Noel Jones
>>
>> On 10/8/2018 6:08 PM, Steven Christensen wrote:
>>
>> Hi Viktor,
>>
>> Thank you for your examples. You have a very complex monit configuration,
>> and I can learn a lot.
>>
>> However, I tried the "depends" implementation, but it did not work when
>> trying to start the service.
>>
>> If my "xyzzy" service depends on "check_xyzzy" then it will not be able
>> to start, because before xyzzy is able to start. monit wants check_xyzzy to
>> work, but check_xyzzy doesn't succeed, because xyzzy isn't running. It is a
>> "chicken and egg" problem.
>>
>> -- Steven
>>
>>
>>
>> On Sat, Oct 6, 2018 at 2:03 AM SZÉPE Viktor <[email protected]> wrote:
>>
>>> Idézem/Quoting Steven Christensen <[email protected]>:
>>>
>>> > Hello,
>>> >
>>> > Long time monit user, and I really love it.
>>> >
>>> > I have the following (equivalent) process monitor entry:
>>> >
>>> > =====================================
>>> > check process xyzzy matching "xyzzy"
>>> > start program "/root/start_xyzzy.sh"
>>> > stop program /usr/bin/pkill -f "xyzzy"
>>> > =====================================
>>> >
>>> > But sometimes the process can exist but it isn't doing what it needs
>>> to do.
>>> > I have another script which checks if xyzzy is actually working, and
>>> > returns a status depending on the results of the check.
>>> >
>>> > So I'd like something that looks like this (note last line):
>>> > =====================================
>>> > check process xyzzy matching "xyzzy"
>>> > start program "/root/start_xyzzy.sh"
>>> > stop program /usr/bin/pkill -f "xyzzy"
>>> > if program "/root/check_xyzzy.sh" status != 0 then restart
>>> > =====================================
>>> >
>>> > It's the last line I don't know how to achieve. Are there any
>>> suggestions?
>>> >
>>> > Thanks - Steven
>>>
>>> Hello Steven!
>>>
>>> I use tiny script with "depends on"
>>>
>>> https://github.com/szepeviktor/debian-server-tools/blob/master/monitoring/monit/services/fail2ban_script
>>> to check on services
>>>
>>> https://github.com/szepeviktor/debian-server-tools/blob/master/monitoring/monit/services/fail2ban#L11
>>>
>>>
>>> SZÉPE Viktor, honlap üzemeltetés / Running your application
>>> https://github.com/szepeviktor/debian-server-tools/blob/master/CV.md
>>> --
>>> ügyelet/hotline: +36-20-4242498 [email protected] skype: szepe.viktor
>>> Budapest, III. kerület
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
>>
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