How to make your website to maintenance mode - Apache

How to make your website to maintenance mode.md

Apache

How to make your website to maintenance mode

1. Put maintenance.html into your root directory

2. Open .htaccess file

3. Insert this block in the first line of the file

    ErrorDocument 503 /maintenance.html
    <IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_URI} !=/maintenance.html
    RewriteCond %{REMOTE_ADDR} !=127.0.0.1
    RewriteRule ^.*$ - [R=503,L]
    </IfModule>
   

4. Replace 127.0.0.1 to your ip address

5. Done! Users except you will be redirected to maintenance.html

So what does it exactly do?

ErrorDocument 503 /maintenance.html is when user gets error 503, redirect the page to maintenance.html

RewriteRule ^.*$ - [R=503,L] does rewrite any url without replacing the url and access with 503

Hello, nice function. I try it for my use-case, but it does not work as expected.
I add some line of codes to exlude the pictures fro the maintenance page and also exclude the healthcheck file for the loadbalancer check. Theres requests should not be redirected to the maintenance page.

` # Redirect all request to a 503 return code when in maintenance mode

    ErrorDocument 503 /maintenance/index.html
    RewriteEngine on
    RewriteCond  /apps/myApp/maintenance/ALL -f [OR]
    RewriteCond  /apps/myApp/maintenance/%{SERVER_NAME} -f
    RewriteCond %{REQUEST_URI} !=/maintenance/index.html
    RewriteCond %{REQUEST_URI} !=programdata/images/header.jpg
    RewriteCond %{REQUEST_URI} !=programdata/images/footer.jpg
    RewriteCond %{REQUEST_URI} !=programdata/images/logo.png
    RewriteCond %{REQUEST_URI} !=probe/healthcheck.cfm
    RewriteRule ^ - [R=503,L]
    # Redirect away from the maintenance page if not in maintenance mode
    RewriteCond  /apps/myApp/maintenance/ALL !-f
    RewriteCond  /apps/myApp/maintenance/%{SERVER_NAME} !-f
    RewriteRule ^/maintenance/index.html$ / [R,L]`

It works, if I access the webpage in root, means http://localhost then I will redirected to the maintenance page. But If I call the page in subfolder, http://localhost/admin I see the text of my maintenance page, but the images are not displayed.

This was very useful! I am using this in my web servers. This solution requires no extra load on file system and does not require a restart of webserver to be activated. Good work!

One thing, though: If you have subfolders with their own .htaccess files with rewrite rules, you'll need this line in the root directory .htaccess to override the subfolder .htaccess rewrite rules: RewriteOptions InheritDownBefore

I spent some time before sorting this out, so I thought it'd be nice to get back to you with this info.