Cross-Cluster Network Connectivity for Kubernetes
Submariner enables direct networking between pods in different Kubernetes clusters on prem or in the cloud.
Kubernetes native multi-cluster canary or blue-green rollouts using Helm - bookingcom/shipper
Multicluster-controller is a Go library for building Kubernetes controllers that need to watch resources in multiple clusters. It uses the best parts of controller-runtime (the library powering kubebuilder and now operator-sdk) and replaces its API (the manager, controller, reconcile, and handler packages) to support multicluster operations.