Abstract
Kubernetes, a container orchestration tool for automatically installing and managing Docker containers, has recently begun to support a federation function of multiple Docker container clusters. This technology, called Kubernetes Federation, allows developers to increase the responsiveness and reliability of their applications by distributing and federating container clusters to multiple service areas of cloud service providers. However, it is still a daunting task to manually manage federated container clusters across all the service areas or to maintain the entire topology of cloud applications at a glance. This research work proposes a method to automatically form and monitor Kubernetes Federation, given application topology descriptions in TOSCA (Topology and Orchestration Specification for Cloud Applications), by extending the orchestration tool that automatizes the modeling and instantiation of cloud applications. It also demonstrates the successful federation of the clusters according to the TOSCA specifications and verifies the auto-scaling capability of the configured system through a scenario in which the servers of a sample application are deployed and federated.
Highlights
In recent years, organizations that have made the transition from building and managing their own computing facility to cloud computing have been benefiting from maximized capacity and cost-efficiency [1]
Expressions to orchestrate the deployment of various cloud applications in OpenStack across multiple federated cloud providers. This differs from ours in that we present an approach and corresponding architectural design that can reap the benefits of application portability from TOSCA-based declarative topology descriptions and performance gains from container-based fine-grained compositions
Cloud management tools were used to deliver auto-scaling deployment across multiple clouds using automated model-to-configuration transformation. This is different from our work because we do not use the model transformation approach, with our proposed orchestration architecture centered on the idea of federating container clusters using a TOSCA-based cloud orchestration tool
Summary
Organizations that have made the transition from building and managing their own computing facility to cloud computing have been benefiting from maximized capacity and cost-efficiency [1]. Deploying a container cluster federation across multiple service areas allows cloud providers to improve reliability and responsiveness [9] This is still considered to be a complicated process; As container clusters are increasingly being deployed and federated over multiple services from different cloud providers [10], managing and monitoring cloud applications across the entire service areas of an organization is a big challenge. When it comes to a means of modeling cloud applications, there exist several prominent alternatives.
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