Connect services across clusters

You can use the Tailscale Kubernetes Operator to expose a Service in one cluster to another cluster by combining cluster ingress and cluster egress. Expose the Service in cluster A to the tailnet through ingress, then connect to it from cluster B through egress.

For GitOps workflows that need to manage deployments across multiple clusters, refer to Deploy across clusters with ArgoCD.

How it works

1. Expose the Service you want to access in cluster A using ingress.
2. In cluster B, create an egress Service that connects to the tailnet address of the Service exposed in cluster A. Refer to the egress guide for details.

This creates a mirror of cluster A's Service inside cluster B, accessible to workloads in cluster B as a regular Kubernetes Service.