Over on the spectacular Red Hat Developers site, Brian Tannous has put together a great video explaining the ins and outs of event-driven serverless development on OpenShift. Serverless is a great platform for triggering infrastructure maintenance code, and other care and feeding tools because it can be strictly run against event triggers, and remain asleep otherwise.
Naturally, the open hybrid cloud combined with serverless compute means that the only real asset to maintain for these various tools need be only the tool itself, rather than the tool and a host of listening infrastructure on top of a VM. That saves time for everyone in the development chain.
Brian covers the basics of grasping hold of these capabilities as a developer in this 5 minute video. For more information, check out his much longer and more detailed post over on the Red Hat Developers Blog.