We’ve been experimenting with multi-cluster failover for Kubernetes workloads, and one open-source project that actually works really well is k8gb
.
It acts as a GSLB controller inside Kubernetes — doing DNS-level health checks, region awareness, and automatic failover between clusters when one goes down.
It integrates with ExternalDNS and supports multiple DNS providers (Infoblox, Route53, Azure DNS, NS1, etc.), so it can handle failover across both on-prem and cloud clusters.
It’s not a silver bullet for every architecture, but it’s one of the few OSS projects that make multi-region failover actually manageable in practice.
It acts as a GSLB controller inside Kubernetes — doing DNS-level health checks, region awareness, and automatic failover between clusters when one goes down.
It integrates with ExternalDNS and supports multiple DNS providers (Infoblox, Route53, Azure DNS, NS1, etc.), so it can handle failover across both on-prem and cloud clusters.
It’s not a silver bullet for every architecture, but it’s one of the few OSS projects that make multi-region failover actually manageable in practice.