GitHub’s Actions Runner Controller (ARC) offers a lot of great features, including metrics. These metrics give you visibility to the processing queue as well as the performance of runners and jobs. Enabling this feature is surprisingly easy. This post will show you how.

I’ve seen lots of teams trying to increase the availability of GitHub runners for their organization by implementing GitHub Actions Runner Controller (ARC). In some cases, they hope to try to exceed GitHub’s 99.9% SLA. Unfortunately, the math works against them. In this post, I’ll explain why.

One challenge with the GitHub’s Actions Runner Controller (ARC) is that it does not officially support Windows containers for the runners. With a little bit of work, though, it’s possible to make this configuration work on a hybrid Linux/Windows cluster.