“Site down for maintenance” notice using Apache .htaccess and the mod_rewrite module.
I assume you know how to enable the Apache htaccess directive and the mod_rewrite module.
First you need to create a .htaccess file in your root level of your website.
Next you add the following lines to it
Options +FollowSymlinks
RewriteEngine on
RewriteCond %{REQUEST_URI} !/sitedown.html$
RewriteRule $ /sitedown.html [R=302,L]
The .htaccess file should be “active” immediately and you should see the content of your sitedown.html file. If not, try clearing your browsers cache.
If you as a maintenance user would like to access the site without seeing the sitedown.html file, add the following line to enable IP address exception
RewriteCond %{REMOTE_HOST} !^192\.168\.0\.12
Remember to replace the IP address with your address.
The .htaccess file should now look something like this.
Options +FollowSymlinks
RewriteEngine on
RewriteCond %{REQUEST_URI} !/sitedown.html$
RewriteCond %{REMOTE_HOST} !^192\.168\.0\.12
RewriteRule $ /sitedown.html [R=302,L]
Just delete the .htaccess file when you are done with your maintenance and your site will be available again.
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