[{"id":"IL-0198","title":{"en":"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 providers","ko":"systemd 보안 패치가 Ubuntu 22.04 노드의 systemd-networkd 를 재시작해 Cilium 이 넣은 IP 규칙을 지웠고, 여러 리전과 세 클라우드의 Kubernetes 노드가 한꺼번에 네트워크를 잃었다."},"org":"Datadog","org_slug":"datadog","date":"2023-03-08","severity":"unknown","root_cause":"upgrade-breaking-change","url":"https://benchlet.com/incidentlib/app/cases/IL-0198","shared_components":["node-image","systemd-networkd"]},{"id":"IL-0079","title":{"en":"A GKE node auto-upgrade to an ubuntu_containerd image with a kernel regression left kube-proxy unable to apply its ip6tables rules, so load balancer health checks failed and several clusters lost all ingress traffic","ko":"GKE 노드가 새 ubuntu_containerd 이미지로 자동 업그레이드된 뒤 커널에서 kube-proxy 가 쓰는 iptables 확장이 빠져, 여러 GKE 클러스터의 인그레스 트래픽이 완전히 끊겼다."},"org":"Altinity","org_slug":"altinity","date":"2025-05-17","severity":"unknown","root_cause":"upgrade-breaking-change","url":"https://benchlet.com/incidentlib/app/cases/IL-0079","shared_components":["node-image"]},{"id":"IL-0144","title":{"en":"A systemd security update installed by unattended-upgrades lost the DNS configuration of Ubuntu 18.04 VMs, so AKS kubelets could not resolve registry names and pods failed with ImagePullBackOff","ko":"Ubuntu 18.04 의 systemd 보안 업데이트가 DNS 설정을 날려 AKS 노드의 kubelet 이 레지스트리 이름을 해석하지 못하고 파드가 ImagePullBackoff 에 빠졌다."},"org":"Microsoft Azure","org_slug":"microsoft-azure","date":"2022-08-30","severity":"unknown","root_cause":"upgrade-breaking-change","url":"https://benchlet.com/incidentlib/app/cases/IL-0144","shared_components":["node-image"]}]