Adding a second linode for nodebalancer

Hi

My google-fu has let me down, so I'm turning to the community for help.

I have a wordpress site currently running on a Linode. I would like to add a second Linode and Nodebalancer for the site.

Would it be as straightforward as cloning the wordpress site to the second Linode, and then following the applicable steps in this guide?

https://www.linode.com/docs/websites/cm … -wordpress">https://www.linode.com/docs/websites/cms/high-availability-wordpress

or is there something I need to do that isn't included in that guide?

Any tips, links to guides, advice greatly appreciated.