I'm not 100% sure about the specifics for ACK, but I've been using Weave Flux to manage manifests in my cluster. It resyncs every 5 minutes or so and will correct any drift on the manifests that it can see in the git repo. Rerunning terraform on a set schedule can achieve the same thing with pieces of infrastructure that falls under terraform.
The issue with both of these is that if you create any new resources/manifests outside of git, they'll be invisible to the tools. If ACK can solve this problem, I can see it being quite useful, but if not, the problems that 013a mentioned apply.
The issue with both of these is that if you create any new resources/manifests outside of git, they'll be invisible to the tools. If ACK can solve this problem, I can see it being quite useful, but if not, the problems that 013a mentioned apply.