Flagger vs Rancher Fleet: What are the differences?
What is Flagger? Progressive delivery Kubernetes operator. Progressive Delivery operator for Kubernetes (Canary, A/B Testing and Blue/Green deployments).
What is Rancher Fleet? 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.
Flagger and Rancher Fleet can be categorized as "Container" tools.
Some of the features offered by Flagger are:
- Flexible Traffic Routing
- Extensible Validation
- Progressive Delivery
On the other hand, Rancher Fleet provides the following key features:
- Kubernetes cluster fleet controller
- Designed for massive scale
Rancher Fleet is an open source tool with 546 GitHub stars and 49 GitHub forks. Here's a link to Rancher Fleet's open source repository on GitHub.