Centurion vs Rancher Fleet: What are the differences?

Developers describe Centurion as "A mass deployment tool for Docker fleets". A deployment tool for Docker, made by New Relic. Takes containers from a Docker registry and runs them on a fleet of hosts with the correct environment variables, host volume mappings, and port mappings. Supports rolling deployments out of the box, and makes it easy to ship applications to Docker servers. New Relic is using it to run their production infrastructure. On the other hand, Rancher Fleet is detailed as "Manage large fleets of Kubernetes clusters". It is a Kubernetes cluster fleet controller specifically designed to address the challenges of running thousands to millions of clusters across the world. While it's designed for massive scale the concepts still apply for even small deployments of less than 10 clusters. It is lightweight enough to run on the smallest of deployments too and even has merit in a single node cluster managing only itself.

Centurion and Rancher Fleet belong to "Container Tools" category of the tech stack.

Some of the features offered by Centurion are:

• Rake application tasks and dependencies
• Talk to a fleet of Docker servers at once
• Does rolling deployment

On the other hand, Rancher Fleet provides the following key features:

• Kubernetes cluster fleet controller
• Designed for massive scale
• Lightweight

Centurion and Rancher Fleet are both open source tools. Centurion with 1.72K GitHub stars and 111 forks on GitHub appears to be more popular than Rancher Fleet with 338 GitHub stars and 22 GitHub forks.