Forum OpenACS Q&A: Re: Server Down for Maintenance Page
One way is to register a filter proc which, when called, redirects all requests to a "Down for maintenance" page. Then have a special admin page that turns on or off that proc.
An even easier way is to have a second tcl initialisation files for AOLserver - which just points to a "Down for maintenance" page.
Is there a way to redirect all requests via filter proc except the one to the maintenance page? Won't this require a request on the login page and therefore defeat the purpose of the redirect?
A very old example here:
Re the login page, I'm honestly not sure how that'll work. Try it and see!