Kubelet NotReady
节点状态为 NotReady,Pod 无法调度或大量 Pod 被驱逐;kubectl describe node 显示 KubeletNotReady,日志出现 PLEG is not healthy、container runtime is down 或磁盘压力。
kubectl get nodes
kubectl describe node <NODE> | grep -A20 Conditions
systemctl status kubelet
journalctl -u kubelet --since '30 min ago'
检查容器运行时:
systemctl status containerd
crictl info
crictl ps -a | head
检查资源压力:
df -h
free -m
cat /proc/loadavg
node-status-update-frequency 和 PLEG 阈值。kubectl describe node — 节点条件systemctl status kubelet — 服务状态journalctl -u kubelet — 日志crictl — 容器运行时df / free — 资源压力