How to Debug Kubernetes Node Issues (K3s and General Clusters)
kubectl get nodes -o wide
kubectl debug node/<node-name> -it --image=nicolaka/netshoot -- /bin/sh
chroot /host sh
hostname
df -h # Disk usage
free -m # Memory
uptime # CPU load
ps aux | grep k3s # K3s server or agent should be running
ps aux | grep kubelet # Kubelet should be part of the K3s process
cat /var/lib/rancher/k3s/server/logs/k3s.log | tail -n 50
cat /var/lib/rancher/k3s/agent/logs/k3s.log | tail -n 50
journalctl -u k3s --no-pager | tail -n 50
cat /proc/$(pgrep -f "k3s server|k3s agent")/fd/1 | tail -n 50
systemctl restart k3s || service k3s restart
exit
kubectl delete pod node-debugger-<node-name> -n default