maintenance.htaccess.template

<IfModule mod_headers.c>
	# Always issue cache-killing headers - the redirects might be removed at any time.
	Header always set Cache-Control "no-cache, max-age=0, must-revalidate, no-transform"
</IfModule>

RewriteEngine On

# Temporarily redirect all requests by injecting "website-under-maintenance" string into the URL.

# We can't resend POST requests so we will just send these ones back to homepage.
RewriteCond %{DOCUMENT_ROOT}/maintenance.html -f
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !^/website-under-maintenance/
RewriteCond %{THE_REQUEST} ^POST
RewriteRule ^.*$  /website-under-maintenance/ [redirect=302,last,ne]

# For all other requests the original URL is preserved and can be used to return the user to the desired location.
RewriteCond %{DOCUMENT_ROOT}/maintenance.html -f
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !^/website-under-maintenance/
RewriteRule ^.*$  /website-under-maintenance%{REQUEST_URI} [qsa,redirect=302,last,ne]

# Finally, serve maintenance page with the 200 code, so that monitoring tools don't report the downtime.
RewriteCond %{REQUEST_URI} ^/website-under-maintenance/
RewriteRule ^.*$  maintenance.html  [qsa,last]