Service Mesh Federation and Multi-Cluster Security

Service Mesh Federation and Multi-Cluster Security

Multi-cluster deployments require securing communications across cluster boundaries. Service mesh federation enables secure connectivity between clusters while maintaining zero-trust principles. Each cluster maintains its own control plane while securely sharing service discovery and policy information.

Trust domain federation establishes mutual trust between independent meshes. Root certificate rotation and trust bundle distribution must be carefully orchestrated. Intermediate certificates scope trust to specific clusters or namespaces, limiting blast radius from compromises.

Cross-cluster policy enforcement ensures consistent security regardless of service location. Policies defined in one cluster apply to services accessed from other clusters. This consistency simplifies security management in complex multi-region deployments while maintaining local autonomy.