NodeReady — 2 Technical Articles

Feb 28, 2025 · Cloud Native

Why Does a Kubernetes Node Stay Ready Only 3 Minutes After Restart?

This article examines a recurring Kubernetes node NotReady issue where nodes become ready for only three minutes after a kubelet restart, detailing the underlying PLEG mechanism, component interactions, and diagnostic steps to resolve the problem.

KubernetesNodeReadyPLEG

0 likes · 8 min read

Why Does a Kubernetes Node Stay Ready Only 3 Minutes After Restart?

Alibaba Cloud Native

Apr 17, 2020 · Cloud Native

Why Does Kubelet Mark Nodes NotReady After 3 Minutes? A Deep Dive into PLEG and Terway Issues

The article analyzes a recurring Kubernetes node NotReady problem where restarting kubelet only restores readiness for three minutes, explains the underlying PLEG timeout mechanism, investigates unresponsive Terway CNI plugin behavior, and presents a netlink‑timeout fix to prevent the issue.

CNIKubernetesNodeReady

0 likes · 16 min read

Why Does Kubelet Mark Nodes NotReady After 3 Minutes? A Deep Dive into PLEG and Terway Issues