Hi,
my monit configuration:
check program webserverresponse with path /home/myhome/webserver_response.sh
if status == 502 then exec "/etc/init.d/nginx restart"
if status == 502 then alert
depends on nginx
webserver_response.sh content:
#!/bin/bash
curl -sL -w "%{http_code}\\n" "http://www.mysite.com"; -o /dev/null
exit $?
output:
user@ps90700:~$ ./webserver_response.sh
502
--
user@ps90700:~$ ./webserver_response.sh echo $?
502
and in log file:
[PST Nov 8 03:53:29] debug : 'webserverresponse' status check succeeded
thanks, Martin
2012/11/8 Martin Pala <[email protected]>
> It seems that the test script doesn't return the 502 then.
>
> Can you provide output of this?:
> --8<--
> /home/myhome/webserver_response.sh
> echo $?
> --8<--
>
>
>
> On Nov 6, 2012, at 12:55 PM, Houssan A. Hijazi <[email protected]>
> wrote:
>
> Hi,
>
> in a logs i have always:
>
> [PST Nov 6 03:53:13] debug : 'nginx' zombie check succeeded
> [status_flag=0000]
> [PST Nov 6 03:53:13] debug : 'nginx' succeeded connecting to INET[
> www.mysite.org:80 <http://www.mysite.org/>] via TCP
> [PST Nov 6 03:53:13] debug : 'nginx' succeeded testing protocol [HTTP]
> at INET[www.mysite.org:80 <http://www.mysite.org/>] via TCP
> [PST Nov 6 03:53:13] debug : 'webserverresponse' status check succeeded
>
> is always succeded the status of webserverresponse. My configuration are
> ok?
>
>
> Thanks
> 2012/11/6 Martin Pala <[email protected]>
>
>> Hi,
>>
>> can you run monit in debug mode ("-v" option) and check the logs?
>>
>> Regards,
>> Martin
>>
>>
>> On Nov 5, 2012, at 6:09 PM, Houssan A. Hijazi <[email protected]>
>> wrote:
>>
>> Hi,
>>
>> my config file:
>>
>> check process nginx
>> with pidfile /dh/nginx/servers/httpd-ps93737/var/logs/nginx.pid #Pid
>> file for nginx in my case it located in /opt/nginx/logs/
>> start program = "/etc/init.d/nginx start"
>> stop program = "/etc/init.d/nginx stop"
>> if failed host www.mysite.com port 80 protocol HTTP then restart #set
>> your server IP that runs nginx
>> if 5 restarts with 5 cycles then alert
>> check program webserverresponse with path
>> /home/myhome/webserver_response.sh
>> # if status == 502 then restart
>> if status == 502 then exec "/usr/local/bin/monit restart nginx"
>> depends on nginx
>>
>> My /home/myhome/webserver_response.sh return 502, but not work, not
>> restart nginx.
>>
>> I did something wrong?
>>
>> thanks
>>
>> 2012/11/2 Martin Pala <[email protected]>
>>
>>> You can keep the "depends on nginx" as well (if the parent nginx service
>>> will be restarted, it will suppress the child service test during the
>>> restart).
>>>
>>>
>>> On Nov 2, 2012, at 10:16 PM, "Houssan A. Hijazi" <[email protected]>
>>> wrote:
>>>
>>> Hi,
>>>
>>> thanks for your hint.
>>>
>>> i don't need put: depends on nginx ?
>>>
>>> Thanks
>>>
>>>
>>>
>>> 2012/11/2 Martin Pala <[email protected]>
>>>
>>>> I'm sorry i provided wrong hint - the child service restart action
>>>> doesn't trigger the parent's service restart (the action cascades from
>>>> parents to children but bot vice versa).
>>>>
>>>> The correct way to restart the nginx and prevent th race condition
>>>> between the two checks is:
>>>>
>>>> check program webserverresponse with path
>>>> /home/myhome/webserver_response.sh
>>>> if status == 502 then exec "/usr/bin/monit restart nginx"
>>>>
>>>> Regards,
>>>> Martin
>>>>
>>>>
>>>>
>>>> On Nov 1, 2012, at 6:19 PM, "Houssan A. Hijazi" <[email protected]>
>>>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> this rule is not work:
>>>>
>>>> check program webserverresponse with path
>>>> /home/myhome/webserver_response.sh
>>>> if status == 502 then restart
>>>> depends on nginx
>>>>
>>>> if i run /home/myhome/webserver_response.sh in terminal it print 502
>>>> but the monit not restart.
>>>>
>>>> Can you help me?
>>>>
>>>> thanks
>>>>
>>>> 2012/11/1 Houssan A. Hijazi <[email protected]>
>>>>
>>>>> Thanks, Martin
>>>>>
>>>>>
>>>>> 2012/11/1 Martin Pala <[email protected]>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> the "check program" was added in Monit 5.3 ... you need to upgrade
>>>>>> monit.
>>>>>>
>>>>>> Regards,
>>>>>> Martin
>>>>>>
>>>>>>
>>>>>> On Nov 1, 2012, at 2:59 PM, "Houssan A. Hijazi" <
>>>>>> [email protected]> wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> i created the file like this:
>>>>>>
>>>>>> #!/bin/bash
>>>>>> curl -o /dev/null --silent --head --write-out '%{http_code}\n'
>>>>>> http://www.mysite.org
>>>>>>
>>>>>> it return the http response code.
>>>>>>
>>>>>> in monit configuration i do:
>>>>>>
>>>>>> check process nginx
>>>>>> with pidfile /dh/nginx/servers/httpd-myserver/var/logs/nginx.pid
>>>>>> start program = "/etc/init.d/nginx start"
>>>>>> stop program = "/etc/init.d/nginx stop"
>>>>>> if failed host www.mysite.org port 80 protocol HTTP then restart
>>>>>> #set your server IP that runs nginx
>>>>>> if 5 restarts with 5 cycles then alert
>>>>>> check program webserverresponse with path
>>>>>> /home/myhome/webserver_response.sh
>>>>>> if content == "502" then restart
>>>>>> depends on nginx
>>>>>>
>>>>>> When i try start monit:
>>>>>>
>>>>>> $ sudo /etc/init.d/monit start
>>>>>> Starting daemon monitor: Syntax error:
>>>>>> /etc/monit/conf.d/nginx.conf:7: Error: syntax error
>>>>>> 'webserverresponse'
>>>>>>
>>>>>> Monit version: 1:5.1.1-1
>>>>>>
>>>>>> thanks
>>>>>>
>>>>>>
>>>>>> 2012/10/31 Martin Pala <[email protected]>
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> the default HTTP protocol test returns just failure if the HTTP code
>>>>>>> is error.
>>>>>>>
>>>>>>> You can use the "check program" test with custom script and use
>>>>>>> curl/wget to get the http response code, for example (not tested):
>>>>>>> /usr/local/bin/myhttptest.sh:
>>>>>>> --8<--
>>>>>>> #!/bin/bash
>>>>>>> exit `curl -sL -w "%{http_code}\\n" "http://mymachine"; -o /dev/null`
>>>>>>> --8<--
>>>>>>>
>>>>>>> and then connect it to Monit like this:
>>>>>>> --8<--
>>>>>>> check process apache with pidfile /var/run/apache.pid
>>>>>>> start program = ...
>>>>>>> stop program = ...
>>>>>>>
>>>>>>> check program myhttptest with path /usr/local/bin/myhttptest.sh
>>>>>>> if status == 502 then restart
>>>>>>> depends on apache
>>>>>>> --8<--
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Another option is to use the generic send/expect test to write
>>>>>>> simple HTTP check and test the 502 response - generic example from the
>>>>>>> monit manual:
>>>>>>> --8<--
>>>>>>> if failed host cave.persia.ir port 4040
>>>>>>> send "Open, Sesame!\r\n"
>>>>>>> expect "Please enter the cave\r\n"
>>>>>>> send "Shut, Sesame!\r\n"
>>>>>>> expect "See you later [A-Za-z ]+\r\n"
>>>>>>> then restart
>>>>>>> --8<--
>>>>>>>
>>>>>>>
>>>>>>> Regards,
>>>>>>> Martin
>>>>>>>
>>>>>>>
>>>>>>> On Oct 30, 2012, at 1:57 PM, Houssan A. Hijazi <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>> > Hi,
>>>>>>> >
>>>>>>> > i am on dreamhost using nginx with fastcgi, i need use monit to
>>>>>>> monitoring the nginx error, if error is 502 so restart.
>>>>>>> >
>>>>>>> > in my monit.log i have:
>>>>>>> >
>>>>>>> > HTTP error: Server returned status 502
>>>>>>> >
>>>>>>> > How i can see if host returned 502 error ?
>>>>>>> >
>>>>>>> > Thanks
>>>>>>> >
>>>>>>> > --
>>>>>>> > To unsubscribe:
>>>>>>> > https://lists.nongnu.org/mailman/listinfo/monit-general
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> To unsubscribe:
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>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> --
>>>>>> *Houssan A. Hijazi *
>>>>>> Analista de Sistemas
>>>>>> www.lojasnoparaguai.com.br / www.libanovivo.org
>>>>>> --
>>>>>> To unsubscribe:
>>>>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> To unsubscribe:
>>>>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> --
>>>>> *Houssan A. Hijazi *
>>>>> Analista de Sistemas
>>>>> www.lojasnoparaguai.com.br / www.libanovivo.org
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> *Houssan A. Hijazi *
>>>> Analista de Sistemas
>>>> www.lojasnoparaguai.com.br / www.libanovivo.org
>>>> --
>>>> To unsubscribe:
>>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>>
>>>>
>>>>
>>>> --
>>>> To unsubscribe:
>>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>>
>>>
>>>
>>>
>>> --
>>> --
>>> *Houssan A. Hijazi *
>>> Analista de Sistemas
>>> www.lojasnoparaguai.com.br / www.libanovivo.org
>>> --
>>> To unsubscribe:
>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>
>>>
>>>
>>> --
>>> To unsubscribe:
>>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>>
>>
>>
>>
>> --
>> --
>> *Houssan A. Hijazi *
>> Analista de Sistemas
>> www.lojasnoparaguai.com.br / www.libanovivo.org
>> --
>> To unsubscribe:
>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>
>>
>>
>> --
>> To unsubscribe:
>> https://lists.nongnu.org/mailman/listinfo/monit-general
>>
>
>
>
> --
> --
> *Houssan A. Hijazi *
> Analista de Sistemas
> www.lojasnoparaguai.com.br / www.libanovivo.org
> --
> To unsubscribe:
> https://lists.nongnu.org/mailman/listinfo/monit-general
>
>
>
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> https://lists.nongnu.org/mailman/listinfo/monit-general
>
--
--
*Houssan A. Hijazi *
Analista de Sistemas
www.lojasnoparaguai.com.br / www.libanovivo.org
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