Re: Monit http error status

[Houssan A. Hijazi]

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 <address@hidden>

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 <address@hidden> 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
>

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Houssan A. Hijazi 

Analista de Sistemas

www.lojasnoparaguai.com.br / www.libanovivo.org