Incident Library

Organisation

Microsoft

Microsoft · microsoft

2 cases · 2024 to 2025

Root cause Software defect2
Component Node operating system image1Node pool1Pod scheduling and placement1
Contributing factor Automation amplification1Cache-masked failure1
Symptom Scale-up failure1Pods Pending1Upgrade stall1

Cases

  1. IL-0147 AKS nodes behind an HTTP proxy failed to provision with CSE exit code 31 on 202508 node images, because a refactoring stopped the proxy from being used when downloading uncached Kubernetes binariesMicrosoft · 2025

    Root cause Software defect

  2. IL-0148 A kube-scheduler regression in Kubernetes v1.27.14, v1.28.10 and v1.29.5 made the scheduler panic on a pod whose node affinity named a nonexistent node, so no pods were scheduled on affected AKS clustersMicrosoft · 2024

    Root cause Software defect