Strange try_files behaviour

[itpp2012]

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;
        }

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,251650,251756#msg-251756