Hello,  Right now I only have a single server setup: https://docs.2600hz.com/sysadmin/doc/install/install_via_centos7/ I am using cloud services such as digitalocean. I was wondering how I might go about scaling up servers as slowly as I need and if needed scale down -so that I might be able to automate the scaling to save money. Any guidance that could be provided would be much appreciated.