Davide Falcone
Designing a scalable network overlay for Kubernetes multi-cluster topologies.
Rel. Fulvio Giovanni Ottavio Risso, Alex Palesandro. Politecnico di Torino, Master of science program in Computer Engineering, 2021
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Abstract
Nowadays, more and more organizations leverage Kubernetes as a way to deploy containerized applications. In addition, they tend to own different clusters in order to increase their geographical reachability or avoid the vendor lock-in, in case of public clouds. Given that, an efficient management of multi-cluster should be crucial in companies. This thesis analyzes the limitations of Liqo when supporting this very important use case. Liqo is an open-source project that enables the creation of multi-cluster environments by making clusters able to offload workloads on ‘peered’ clusters. However, the current version experiences different issues when deploying applications living on more than two clusters: the first deals with the network architecture that does not provide a way of communication between ‘Spoke’ clusters while the second is about how Pods (i.e.
Endpoints) are advertised in such clusters
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