Flux is a Kubernetes controller that automatically ensures that the state of a cluster matches the config in git. Helm Operator is a Kubernetes CRD controller that manages the Helm release lifecycle.
Linkerd v2 is a lightweight, easy to install and maintain, service mesh for Kubernetes. For HTTP and gRPC apps, Linkerd automatically enables load balancing, tracing, Prometheus metrics and mTLS with zero configuration.
Flagger is a Kubernetes operator that automates the promotion of canary deployments using Linkerd routing for traffic shifting, Prometheus metrics for canary analysis and Helm for testing.