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Live Containerized Service Migration Across Edge to Cloud Continuum
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DescriptionServices on the edge and fog systems desire mobility owing to the user or data mobility, and the necessity of relocating to the cloud upon the oversubscription. More specifically, live migration of containerized microservices is required for service mobility, elasticity, and load balancing purposes. Although container runtimes and orchestrators recently provided native live migration support, they do not allow migration across autonomous computing systems with heterogeneous orchestrators. Our hypothesis is that non-native and non-invasive support for the live container migration is the need of hour and can unlock several new use cases. We develop a non-native and non-invasive live container migration method leveraging the nested container runtime. We design the architecture and develop the solution to enable container migration across heterogeneous orchestrators. We evaluate the performance against other approaches. We observe that for microservices smaller than 512 MiB, the nested container runtime approach can be implemented within an acceptable overhead.