atux - 2017-01-09

hi. new to the area of webmin. i have 2 virtual servers with names and on both of the servers i do run dns as master and slave. on i do have 4 domains as virtual servers with email server as well for all of the domains and webmail (roundcube). the management of the servers is getting two heavy by doing things from cli and i would like to automate stuff, also i would like to have a redundancy in case a server goes down.
i have installed webmin in both and i would like to know how to make the rest of the services to work, please. is there a guide or hint on how to make the forementioned to work, please?