{"id":"node-fleet-heterogeneous-runtime-model","text":"The OpenShift node fleet is fundamentally heterogeneous: RHCOS nodes follow an immutable rpm-ostree model with operator-mediated changes, while Windows nodes use an entirely different container runtime (not CRI-O) and require OVN-Kubernetes hybrid networking — operational procedures, troubleshooting, and capacity planning must account for this runtime divergence.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["rhcos-immutable-update-model","windows-node-architectural-divergence"],"outlist":[],"label":"depth-2 — RHCOS and Windows nodes have incompatible runtime models coexisting in one cluster"}],"dependents":["lifecycle-constrained-across-heterogeneous-fleet"],"metadata":{},"explanation":{"steps":[{"node":"node-fleet-heterogeneous-runtime-model","truth_value":"IN","reason":"SL justification valid","antecedents":["rhcos-immutable-update-model","windows-node-architectural-divergence"],"label":"depth-2 — RHCOS and Windows nodes have incompatible runtime models coexisting in one cluster"},{"node":"rhcos-immutable-update-model","truth_value":"IN","reason":"SL justification valid","antecedents":["rhcos-nodes-immutable","rhcos-rpm-ostree-updates","image-layering-verify-rpm-ostree-status"],"label":"Three facets of the same immutable-OS operational model"},{"node":"rhcos-nodes-immutable","truth_value":"IN","reason":"premise"},{"node":"rhcos-rpm-ostree-updates","truth_value":"IN","reason":"premise"},{"node":"image-layering-verify-rpm-ostree-status","truth_value":"IN","reason":"premise"},{"node":"windows-node-architectural-divergence","truth_value":"IN","reason":"SL justification valid","antecedents":["windows-nodes-not-crio","windows-containers-ovn-hybrid-networking"],"label":"Windows nodes require distinct runtime and networking from Linux nodes"},{"node":"windows-nodes-not-crio","truth_value":"IN","reason":"premise"},{"node":"windows-containers-ovn-hybrid-networking","truth_value":"IN","reason":"premise"}]}}