Re: Rewrite rule with F5 redirect to https

Justin Pasher <justinp@xxxxxxxxxxxxxxxxxxx> · Thu, 02 Oct 2008 10:57:54 -0500

Yoom Nguyen wrote:

I have this rewrite rule implemented and it will work fine if I access to Apache
web server directly.   But, if the traffic route to a load balancer (F5) then to the Apache server

it won't work.  The browser will trying to open the maintenance.html page and nothing will display and 

it won't give any error either.

Here is what the load balancer F5 does, F5 perform a https server for the Apache server.
So any traffic reply from Apache on port 80 will be display on port 443 on the end user's browser.

It's a little unclear on what ports you are actually using (you mention 

port 80 and 443). Is the end user's browser requesting an http or an 

https page? If they are requesting an https page but apache is serving 

it as an http page, are you sure the load balancer can actually rewrite 

it as an https request to pass along to the end user? Does the load 

balancer handle all of the SSL encryption/decryption work to allow it to 

"talk" to apache over http?

The rewrite rules below are port agnostic, meaning if the client (end 

user or load balancer) make a request on port 80, it will remain on port 

80. The same goes for port 443, so you shouldn't require anything 

special in the rewrite rules to accommodate for http versus https.

You might want to put the RewriteCond directive directly above 

RewriteRule, for better readability.

--
Justin Pasher

Is there a way to change the RewriteCond or RewriteRule to accommodate the Https issues???

The below syntax was recommended by Eric Covener? and it works for going direct to Apache but not going through 

the F5 load balancer. 

       DocumentRoot /srv/www/maintenance/

        # Rewrite Rules
        RewriteEngine on
        RewriteCond %{REQUEST_URI} !=/maintenance.html

# Apache log files and location
        ErrorLog /var/log/apache2/maintenance.error_log
        CustomLog /var/log/apache2/maintenance.access_log combined

        # Redirect rule
        RewriteRule ^(.*)$ /maintenance.html [R=302,NC,L]

#########  Local server landing page #########################
        <Directory "/srv/www/maintenance/">
        Options None
        Order allow,deny
        Allow from all
        </Directory>

Thanks much,

Y

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