Half your cluster lives on AWS EKS. The other half? It hums away on Linode Kubernetes. You need them to act like one, not rivals arguing over a kubeconfig. Welcome to the eternal DevOps balancing act: speed, consistency, and identity that actually works across clouds.
EKS makes scaling predictable inside AWS. Linode Kubernetes keeps costs down and removes regional blind spots. Combined, they form a flexible multi-cloud fabric that can stretch where your workloads demand. But connecting them securely and cleanly is where the puzzles begin.
The key is identity flow. EKS relies on AWS IAM and OIDC to control access inside clusters. Linode Kubernetes uses its own RBAC and access tokens. To join them, you need a neutral trust layer, something that maps identity once and enforces it everywhere. Think of it as the traffic cop that speaks both IAM and kube-speak without needing a custom tunnel each time.
In practice, the workflow starts in identity management. Sync your IdP, like Okta or Azure AD, through OIDC. Assign Kubernetes-specific roles that follow users regardless of which cluster they log into. Then, link your service accounts to workload identities so apps can call between clusters without handing off raw tokens. You get cross-cluster service-to-service calls that respect least privilege, and ops teams get a single audit trail instead of two disjointed logs.
Quick Answer:
To connect EKS and Linode Kubernetes, unify identity first. Use OIDC to tie both clusters to the same provider, map users to roles, and adopt a proxy that enforces those mappings across environments. This approach simplifies policy control and prevents credential sprawl.