This topic describes how to federate multiple clusters.
In disaster recovery scenarios, you may deploy your workloads across multiple regions. This needs you to manage Kubernetes clusters across different regions. Kubernetes Cluster Federation (KubeFed) is a multi-cluster management project developed within the Kubernetes community. It enables managing multiple Kubernetes clusters across regions and cloud service providers. With KubeFed, you can coordinate the configurations of multiple Kubernetes clusters through a single set of APIs in a hosting cluster. For more information about KubeFed concepts, see this GitHub project.
- Run the
kubectl config get-contextscommand to query cluster information.If the following information is displayed, it indicates that the configuration is complete.
CURRENT NAME CLUSTER AUTHINFO NAMESPACE * cluster1 cluster1 kubernetes-admin1 cluster2 cluster2 kubernetes-admin2
- Run the following commands to set cluster1 to host cluster and set cluster2 to member
Set the host cluster kubefedctl join host-cluster --cluster-context=cluster1 \ --host-cluster-context=cluster1 --v=2 Set the member cluster kubefedctl join member-cluster-1 --cluster-context=cluster2 \ --host-cluster-context=cluster1 --v=2
- Run the following command to check the cluster federation.If the following information is displayed, it indicates that cluster federation is complete.
kubectl get federatedcluster -n kube-federation-system
NAMESPACE NAME READY AGE kube-federation-system host-cluster True 104d kube-federation-system member-cluster-1 True 104d