You just can’t. Each LMS and CMS has its own plugins.
If you want to use BigBlueButton with Moodle is fine, but you need to install the plugin I mentioned before. There is no way the plugin for wordpress is going to work on Moodle. Believe me I wrote the two of them ??
The plugins are installed on top of the LMS/CMS, so if your Moodle server is installed on CentOS so will the plugin.
Now, if your question is, how to install a BigBlueButton server on CentOS?, well you won’t find the answer here. You need to go the the bigbluebutton mailing lists.
There is people in the community who has been working this, but the official support is only for Ubuntu Server 14.04.