The Distributed cloud offers better resilience by providing redundancy, scalability and flexibility, especially for cloud native applications. However the complexity of multi-cluster workload and traffic management in hybrid or multi-cloud environment brings huge challenges in practice, such as the number of overall multi-cluster workload instances serve for customer request decreased when some unhealthy ones isolated in case of failures.
In this speech, Chaomeng introduces a production practice of Karmada and Istio work together to promote resilience of multi-cluster application. How Karmada and Istio policies configured in a centralized control plane controls both replica and traffic distribution across cluster automatically. In case of failures, how Istio’s failover acts to remove unhealthy endpoints from global load balancing pool, and how Karmada rebuild the according number of instance in other healthy clusters, ensure multi-cluster instances always meet the capacity design.