Maxim Dounin Wrote:
-------------------------------------------------------
> And we even have a trac ticket for this:
>
> http://trac.nginx.org/nginx/ticket/86

A tested workaround with Lua and a single IF with a return then:

location ~ \.php$ {
try_files $uri $uri/ =404;
set $mmode 0;
set_by_lua $notused '
s = 0;
local source_fname = ngx.var.document_root .. "/maintenance_mode.html";
local file = io.open(source_fname);
if file then ngx.var.mmode=1; file:close(); end;
s = string.find(ngx.var.remote_addr, "^10.10.20.");
if s then ngx.var.mmode=0; end;
';
if ($mmode) { return 503; }
index index.html index.htm index.php;
fastcgi_ignore_client_abort on;
fastcgi_pass myLoadBalancer;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

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nginx for Windows http://nginx-win.ecsds.eu/