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Grout is a DPDK-based software router that supports IPv4/IPv6 forwarding, VRFs, NAT, and FRR integration. Deploying it, as any DPDK application, inside a Kubernetes pod presents a fundamental challenge: DPDK expects direct hardware access, hugepages, and dedicated CPU cores, while Kubernetes abstracts all of these away by design.
This talk walks through deploying Grout on Red Hat OpenShift, leveraging the platform's operator ecosystem to bridge the gap between DPDK's hardware requirements and Kubernetes' abstraction model. It covers the full stack: configuring the SR-IOV Network Operator to expose virtual functions, using the Node Tuning Operator and PerformanceProfiles to guarantee isolated CPUs, Hugepages, and NUMA-aligned scheduling, and packaging Grout as a container that can consume these resources.
Andrea Panattoni is a Principal Software Engineer at Red Hat, working on OpenShift Networking area. He has been working on Telco-related OpenShift features and operators for the last few years.
