WP Super Cache, Missing Apache Modules

[melkerman]

I'm running Vesta on Ubuntu 12.04.3 x64 and everything is working perfect except for one problem with a plugin in Wordpress. WP Super Cache reports following problem:

Missing Apache Modules

mod_headers - Required to set caching information on supercache pages. IE7 users will see old pages without this module.
mod_expires - Set the expiry date on supercached pages. Visitors may not see new pages when they refresh or leave comments without this module.

Is it okay to do the following commands:

sudo a2enmod expires
sudo a2enmod headers
sudo service apache2 restart

Can this create some kind of conflict with Apache/Vesta or will it work as on a normal Apache server?

[edica]

I'm having the same problem.

I will have problem if run it?

sudo a2enmod expires
sudo a2enmod headers
sudo service apache2 restart

[skurudo]

I will have problem if run it?

You'll enable two modules expires and headers
Nothing worry about.

[edica]

Thanks and also I enabled gzip_vary on; in /etc/nginx/nginx.conf