There are a lot of references out there on this, but you have to sort of pull it all together on your own for this particular combination.

Verify that mod_deflate has been installed in Apache:

1. Open /etc/sysconfig/apache2.

2. Find the line that starts:

APACHE_MODULES=…

3. Verify that “deflate” is one of the modules listed (may not be in alphabetical order).

Now, enable compression in the virtual host file for your site:

1. Open /etc/apache2/vhosts.d/.conf.

2. Add the following lines inside the tag:

    <IfModule mod_deflate.c>
	DeflateBufferSize 32768
	DeflateCompressionLevel 5

	<Location />
		SetOutputFilter DEFLATE
		BrowserMatch ^Mozilla/4 gzip-only-text/html
		BrowserMatch ^Mozilla/4\.0[678] no-gzip
		BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
		SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|tiff)$ no-gzip dont-vary
		# Header append Vary User-Agent env=!dont-vary
	</Location>
    </IfModule>

Now restart Apache using:

sudo /etc/init.d/apache2 restart

and you should be in business!

Validate that compression is working

A great, handy online site that you can use to validate that compression is working is http://www.gidnetwork.com/tools/gzip-test.php.

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