K8S/Kubernetes

看系统日志

cat /var/log/messages


用kubectl 查看日志

# 注意：使用Kubelet describe 查看日志，一定要带上 命名空间，否则会报如下错误
[root@node2 ~]# kubectl describe pod coredns-6c65fc5cbb-8ntpv
Error from server (NotFound): pods "coredns-6c65fc5cbb-8ntpv" not found

kubectl describe pod kubernetes-dashboard-849cd79b75-s2snt --namespace kube-system

kubectl logs -f pods/monitoring-influxdb-fc8f8d5cd-dbs7d -n kube-system

kubectl logs --tail 200 -f kube-apiserver -n kube-system |more

kubectl logs --tail 200 -f podname -n jenkins



用journalctl查看日志非常管用

journalctl -u kube-scheduler

journalctl -xefu kubelet

journalctl -u kube-apiserver


journalctl -u kubelet |tail

journalctl -xe


用docker查看日志

docker logs c36c56e4cfa3  (容器id)