After spinning up a new server today at DigitalOcean and trying to set up a new vhost, I could not get the default Apache page to go away and load my vhost’s content.
It turns out that in Debian Jessie vhost configuration files are required to end in *.conf. So, if you are
naming your vhost configuration file example.com just rename it example.com.conf and it should load.
Another tip to see what’s going on if a vhost doesn’t load after a reboot, run this command to check it’s actually being loaded:
apachectl -S