Cilium

Cases, by severity

1. IL-0195 The kube-apiservers of a cluster with more than 200 nodes ran out of memory and crashed one after another under mass LIST requests from Cilium agentsPalark · 2023

   Root cause Capacity exhaustion

2. IL-0198 An automatic Ubuntu security update restarted systemd-networkd, which flushed the IP rules Cilium relied on and cut more than 60 percent of Datadog's Kubernetes nodes off the network across regions and cloud providersDatadog · 2023

   Root cause Breaking change in an upgrade