OpenShift is a platform-as-a-service (PaaS) product built on open source software including Red Hat Enterprise Linux (RHEL), Kubernetes, Docker, etcd and OpenvSwitch. From the HAproxy routing layer down through the kernel itself, there are opportunities to push the limits of scale and performance at each level in the product stack. This paper is meant to assist customers who are interested in deploying scalable OpenShift-based platform-as-a-service clusters. It includes best practices, tuning options and recommendations for building reliable, performant systems at scale.
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