Maas Juju OpenStack and Mysql

Hello. I am so new to the cloud computing. Nowadays I am trying to understand the architecture behind this. It was easy to undestand the architecture behind the given examples. but when it comes to real life problems i get totally confused.

Actually my problem is very simple and also my question is. My company is about to get a huge database on mysql. And the single hardware we have doesn't seem to handle that kind of database. So I want to use the resources of multiple machines' hardware for that job. I searced inteet and saw that Maas with juju and openstack seems suitible for that kind of job.

Am I thinhking right? are these tools suitible for my situation?