Implementation of Service Function Chain Deployment with Allocation Models in Kubernetes

Service function chain (SFC) allocation problems have been studied in previous works. Models with different objectives decide the allocations of functions in chains. Currently, the allocation strategies cannot be applied in Kubernetes automatically so that the performance of these models cannot be evaluated. There is a lack of existing tools which can connect the allocation models and function deployments for SFCs. We implement an open virtual network based SFC-compatible network plugin for Kubernetes. We implement two controllers for creating SFCs among existing functions and SFC deployments without existing functions which can be cooperated with allocation models. The plugin allocates the functions in chains according to the given models and connects each function in chains by setting suitable flow entries in Kubernetes. Our demonstrations validate the implementation at last.