The connection to the server 127.0.0.1:11081 was refused - did you specify the right host or port?
问题k8s集群重启之后出现如下报错The connection to the server 127.0.0.1:11081 was refused - did you specify the right host or port?分析问题查看日志-- Unit kubelet.service has finished shutting down.Jul 16 09:59:14 dce-192-16
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问题
k8s集群重启之后出现如下报错
The connection to the server 127.0.0.1:11081 was refused - did you specify the right host or port?
分析问题
查看kubelet的状态
# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/kubelet.service.d
└─10-dce.conf
/usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: failed (Result: start-limit) since Fri 2021-07-16 09:59:14 HKT; 20min ago
Docs: https://kubernetes.io/docs/
Process: 2663 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS (code=exited, status=255)
Main PID: 2663 (code=exited, status=255)
Jul 16 09:59:04 dce-192-168-153-140 systemd[1]: Unit kubelet.service entered failed state.
Jul 16 09:59:04 dce-192-168-153-140 systemd[1]: kubelet.service failed.
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: kubelet.service holdoff time over, schedul...t.
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: Stopped kubelet: The Kubernetes Node Agent.
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: start request repeated too quickly for kub...ce
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: Failed to start kubelet: The Kubernetes No...t.
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: Unit kubelet.service entered failed state.
Jul 16 09:59:14 dce-192-168-153-140 systemd[1]: kubelet.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
/usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
kubelet drop-in了kubeadm的配置文件
查看日志
-- The start-up result is done.
Jul 17 10:07:26 dce-192-168-153-140 kubelet[2615]: F0717 10:07:26.426856 2615 server.go:199] failed to load Kubelet config file /var/lib/kubelet/conf
Jul 17 10:07:26 dce-192-168-153-140 systemd[1]: kubelet.service: main process exited, code=exited, status=255/n/a
Jul 17 10:07:26 dce-192-168-153-140 systemd[1]: Unit kubelet.service entered failed state.
Jul 17 10:07:26 dce-192-168-153-140 systemd[1]: kubelet.service failed.
Jul 17 10:07:36 dce-192-168-153-140 systemd[1]: kubelet.service holdoff time over, scheduling restart.
Jul 17 10:07:36 dce-192-168-153-140 systemd[1]: Stopped kubelet: The Kubernetes Node Agent.
-- Subject: Unit kubelet.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit kubelet.service has finished shutting down.
Jul 17 10:07:36 dce-192-168-153-140 systemd[1]: start request repeated too quickly for kubelet.service
Jul 17 10:07:36 dce-192-168-153-140 systemd[1]: Failed to start kubelet: The Kubernetes Node Agent.
-- Subject: Unit kubelet.service has failed
-- Defined-By: systemd
查看日志得知是因为安装了kubeadm导致冲突
failed to load Kubelet config file /var/lib/kubelet/conf
解决方法
删除/usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf
文件
[root@dce-192-168-153-140 system]# cd /usr/lib/systemd/system/kubelet.service.d/
[root@dce-192-168-153-140 kubelet.service.d]# ls
10-kubeadm.conf
[root@dce-192-168-153-140 kubelet.service.d]# rm -rf 10-kubeadm.conf
[root@dce-192-168-153-140 kubelet.service.d]# systemctl daemon-reload
[root@dce-192-168-153-140 kubelet.service.d]# systemctl restart kubelet
[root@dce-192-168-153-140 kubelet.service.d]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/kubelet.service.d
└─10-dce.conf
Active: active (running) since Sat 2021-07-17 11:23:19 HKT; 6s ago
Docs: https://kubernetes.io/docs/
Main PID: 3804 (kubelet)
Tasks: 17
Memory: 20.0M
CGroup: /system.slice/kubelet.service
└─3804 /usr/bin/kubelet -v=2 --node-ip 192.168.153.140 --pod-infra-container-image 192.168.153.139/kube-system/dce-kube-pause:3.1 --kubeco...
Jul 17 11:23:20 dce-192-168-153-140 kubelet[3804]: E0717 11:23:20.236149 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/kubelet.go:5... refused
Jul 17 11:23:21 dce-192-168-153-140 kubelet[3804]: E0717 11:23:21.144116 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/kubelet.go:5... refused
Jul 17 11:23:21 dce-192-168-153-140 kubelet[3804]: E0717 11:23:21.663057 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/kubelet.go:5... refused
Jul 17 11:23:21 dce-192-168-153-140 kubelet[3804]: E0717 11:23:21.674050 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/config/apise... refused
Jul 17 11:23:22 dce-192-168-153-140 kubelet[3804]: I0717 11:23:22.178060 3804 certificate_manager.go:409] Rotating certificates
Jul 17 11:23:22 dce-192-168-153-140 kubelet[3804]: E0717 11:23:22.179723 3804 certificate_manager.go:434] Failed while requesting a signed certifi...
Jul 17 11:23:23 dce-192-168-153-140 kubelet[3804]: E0717 11:23:23.091095 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/kubelet.go:5... refused
Jul 17 11:23:24 dce-192-168-153-140 kubelet[3804]: E0717 11:23:24.410211 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/config/apise... refused
Jul 17 11:23:24 dce-192-168-153-140 kubelet[3804]: E0717 11:23:24.714123 3804 reflector.go:178] k8s.io/kubernetes/pkg/kubelet/kubelet.go:5... refused
Jul 17 11:23:25 dce-192-168-153-140 kubelet[3804]: W0717 11:23:25.216282 3804 cni.go:237] Unable to update cni config: no networks found i...ni/net.d
Hint: Some lines were ellipsized, use -l to show in full.
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