Switches in configuration files?

Server NGINX
1

Is there a way to create a variable in the config file that I can set to
true or false (or 1 or 2, etc) and then make my location blocks do an IF
operation based on that var to take different actions in the block.

For instance this is what I currently have:

location ~* /maindir/area1 {
error_page 500 502 503 504 /service-is-down.html;

    access_log  /main.log main;
    proxy_pass  http://my_farm;

    # To temporarily take service offline, comment out the 2 lines

above, and remove the comments from below.
# The incoming requests will then be logged for manual later
handling.
# access_log /deferred.log main;
# empty_gif;
# expires -1d;
}

And instead I’d rather have something like this:

location ~* /maindir/area1 {
error_page 500 502 503 504 /service-is-down.html;

 if(inMaintenanceMode == true) {
    access_log  /main.log main;
    proxy_pass  http://my_farm;
 }
 else
 {
    access_log  /deferred.log main;
    empty_gif;
    expires -1d;
 }
}

Can this sort of thing be done and if so can someone please demonstrate
with a tiny snippet? Thanks!

2

On Thu, Jun 18, 2009 at 3:05 AM, Rt Ibmer[email protected] wrote:

    error_page  500 502 503 504  /service-is-down.html;
  }
  }

maybe something like this

location ~* /maindir/area1 {
error_page 500 502 503 504 /service-is-down.html;
try_files /maintenance.html @myfarm
}

location @myfarm {
access_log /main.log main;
proxy_pass http://my_farm;
}

location /maintenance.html {
access_log /deferred.log main;
expires -1d;
}

create/touch /maintenance.html to switch offline