Openshift
OpenShift Networking Deep Dive: OVN-Kubernetes Architecture and Traffic Flow
Follow one request through an OpenShift cluster: how OVN-Kubernetes turns Kubernetes objects into a logical network, how OVS and Geneve move the packets, where Services, NetworkPolicy, the router and egress fit, and how to trace a failing connection layer by layer.
· 9 min readReadOpenshift
OpenShift Pod Stuck in Pending: How to Debug Taints, Tolerations, Affinity and Topology Spread
A Pod stays Pending when no node passes every required rule, and often no single rule is wrong. How the scheduler filters nodes, what taints, affinity and topology spread each guarantee, a worked example where correct rules combine badly, and a six-step workflow to find the blocking rule.
· 7 min readRead