k8s 1.10.26 一次containerd失敗引發kubectl不可用問題
開機k8s 1.10.26時，報以下錯誤
[root@master ~]# kubectl get no
E0515 08:03:00.914894 7993 memcache.go:265] couldn't get current server API group list: Get "https://192.168.80.50:6443/api?timeout=32s": dial tcp 192.168.80.50:6443: connect: connection refused
E0515 08:03:00.915787 7993 memcache.go:265] couldn't get current server API group list: Get "https://192.168.80.50:6443/api?timeout=32s": dial tcp 192.168.80.50:6443: connect: connection refused
E0515 08:03:00.917903 7993 memcache.go:265] couldn't get current server API group list: Get "https://192.168.80.50:6443/api?timeout=32s": dial tcp 192.168.80.50:6443: connect: connection refused
E0515 08:03:00.920028 7993 memcache.go:265] couldn't get current server API group list: Get "https://192.168.80.50:6443/api?timeout=32s": dial tcp 192.168.80.50:6443: connect: connection refused
E0515 08:03:00.922527 7993 memcache.go:265] couldn't get current server API group list: Get "https://192.168.80.50:6443/api?timeout=32s": dial tcp 192.168.80.50:6443: connect: connection refused
The connection to the server 192.168.80.50:6443 was refused - did you specify the right host or port?
查看kubelet狀態
kubelet.service - kubelet: The Kubernetes Node AgentLoaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor pre>Drop-In: /usr/lib/systemd/system/kubelet.service.d└─10-kubeadm.confActive: activating (auto-restart) (Result: exit-code) since Thu 2025-05-15 0>Docs: https://kubernetes.io/docs/Process: 8114 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CO>Main PID: 8114 (code=exited, status=1/FAILURE)
查看日志 journalctl -xu kubelet
關鍵日志：
啟動container查看報錯
journalctl -xe
● containerd.service - containerd container runtime Loaded: loaded
(/usr/lib/systemd/system/containerd.service; disabled; vendor>
Active: inactive (dead)
Docs: https://containerd.io
解決：
排查發現，配置文件有問題
systemctl stop containerd.servicecp /etc/containerd/config.toml /etc/containerd/config.toml.bak
sudo containerd config default > $HOME/config.toml
sudo cp $HOME/config.toml /etc/containerd/config.toml
sudo sed -i "s#registry.k8s.io/pause#registry.cn-hangzhou.aliyuncs.com/google_containers/pause#g" /etc/containerd/config.tomlsudo sed -i "s#SystemdCgroup = false#SystemdCgroup = true#g" /etc/containerd/config.toml#啟動containerd
啟動kubelet
systemctl start kubelet
systemctl status kubelet
問題解決。
get node 正常。
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