nginx maintainence page with ip whitelist

Question

For my site I'd like to be able to put up a maintenance 503 page but with a whitelist of ip-addresses that will be able to use the website as normal

Would I have to craft something like this in lua?

I see some questions like

Nginx Ip Whitelist

and

How can I setup a custom 503 error page in NGINX?

which explain how to do this separately but I'd like to kind of combine them so I could take the site offline for the outside world but still be able to test it normally from certain IP addresses

Answer 1

You could use the ngx_http_geo_module:

geo $denied {
    default 1; # nobody is allowed access by default

    # but people from the following networks/ip addresses are allowed access
    include whitelist;
    127.0.0.1      0;
    192.168.1.0/24 0;
}

server {
    location / {
        if ($denied) {
            return 503;
        }
    }
}