I have a server hosted on EC2. The server is built on the Linux AMI, based on CentOS. It is dedicated to a client project, and I connect via SSH. Sometimes, I forget to shut down the server when unused, therefore generating unnecessary costs.
How do I make the server shut down automatically on inactivity, for example after 30 min without an SSH connection?
Naturally, I am looking for the simplest solution. A check every hour or so would also be OK, just something that works reliably.