Automated VM Checking and Alerting

User Story:

To create a service that checks all the VMs and then sends alerts to system owners when they need patching. When a server estate is well managed, like that of CIS or TIG, this might not be necessary; the real concern here, is for the small numbers of servers managed by large numbers of people around the university and server management is not their primary task. In those circumstances, alerting them might be really useful. Alternatively we could look at providing an additional service for some of them which meant we could ensure their servers are patched alone with our own.