Re: How to check for a path in a url and restart runit if fails

[Eric PAILLEAU]

Le 12/04/2012 15:27, David Montgomery a écrit :
> When I run apache ab in a t1.micro the site crashes.  This is what I
> want.  Its a spawn-fcgi script under control of runit.  I am using
> nginx and the unix socket is in /tmp/9002.socket.
>
> But I also want to use monit to bring it back up.  When I go
> http://mysite.com/pixel  in FF the page will not load. Even further
> the pid still looks alive according to monit.  I get a green light.
> When testing local host I still get a green light.  According to monit
> the site is still good and the pid is still good so wit will not
> restart.   I get no emails alerts and monit loves to send emails:)
>
> I can now restart the service from monit.  But, monit will not
> automatically restart the service.  I have tried the following.
>
> check host localhost with address 127.0.0.1
>      start program = "/bin/bash -c '/usr/bin/killall pixelServer&&
> sleep 2&&  /home/ubuntu/test.sh'"
>      stop program = "/usr/bin/sv kill pixelServer"
>      if failed url
>           http://127.0.0.1:80/pixel
>           and timeout 2 seconds
>        then exec "/bin/bash -c '/home/ubuntu/test.sh'"
Hi,
Be carefull

/usr/bin/killall pixelServer&&  sleep 2&&  /home/ubuntu/test.sh

Will work only if there is some processes to kill, try

(/usr/bin/killall pixelServer&&  sleep 2 ) ; /home/ubuntu/test.sh

this way the script will be launched if there was process(es) OR NOT.
If there is process(es) to kill , a 2 second sleep wait will be done only if 
some processes was existing,
to let them time to close properly.