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【Kubernetes】The connection to the server <master>:6443 was refused - did you specify the right host ...

2023-05-16

　　不知道怎么用着用着，使用kubectl 时报错，错误如下：


root@R740-2-2:~# kubectl get pod
The connection to the server 107.105.136.28:6443 was refused - did you specify the right host or port?  

$systemctl status kubelet
Mar 07 20:42:25 server1 kubelet[14619]: E0307 20:42:25.908557 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:26 server1 kubelet[14619]: E0307 20:42:26.718263 14619 eviction_manager.go:238] eviction manager: unexpected err: failed to get node info: node "server1" not found
Mar 07 20:42:26 server1 kubelet[14619]: E0307 20:42:26.906939 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:26 server1 kubelet[14619]: E0307 20:42:26.907933 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:26 server1 kubelet[14619]: E0307 20:42:26.908994 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.392766 14619 remote_runtime.go:92] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed pulling image "gcr.io/google_containers/pause-amd64:3.0": Error response from daemon: Get https://gcr.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded w
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.392788 14619 kuberuntime_sandbox.go:54] CreatePodSandbox for pod "kube-apiserver-server1_kube-system(7c74aa0f4b9044a62ba3fc2b222b6a49)" failed: rpc error: code = Unknown desc = failed pulling image "gcr.io/google_containers/pause-amd64:3.0": Error response from daemon: Get https://gcr.io/v2/: net/http: request c
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.392795 14619 kuberuntime_manager.go:647] createPodSandbox for pod "kube-apiserver-server1_kube-system(7c74aa0f4b9044a62ba3fc2b222b6a49)" failed: rpc error: code = Unknown desc = failed pulling image "gcr.io/google_containers/pause-amd64:3.0": Error response from daemon: Get https://gcr.io/v2/: net/http: request
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.392823 14619 pod_workers.go:186] Error syncing pod 7c74aa0f4b9044a62ba3fc2b222b6a49 ("kube-apiserver-server1_kube-system(7c74aa0f4b9044a62ba3fc2b222b6a49)"), skipping: failed to "CreatePodSandbox" for "kube-apiserver-server1_kube-system(7c74aa0f4b9044a62ba3fc2b222b6a49)" with CreatePodSandboxError: "CreatePodSandbo
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.907221 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.908220 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:27 server1 kubelet[14619]: E0307 20:42:27.909242 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:28 server1 kubelet[14619]: I0307 20:42:28.239272 14619 kubelet_node_status.go:273] Setting node annotation to enable volume controller attach/detach
Mar 07 20:42:28 server1 kubelet[14619]: I0307 20:42:28.246581 14619 kubelet_node_status.go:82] Attempting to register node server1
Mar 07 20:42:28 server1 kubelet[14619]: E0307 20:42:28.246744 14619 kubelet_node_status.go:106] Unable to register node "server1" with API server: Post https://107.105.136.28:6443/api/v1/nodes: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:28 server1 kubelet[14619]: E0307 20:42:28.907491 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:28 server1 kubelet[14619]: E0307 20:42:28.908477 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:28 server1 kubelet[14619]: E0307 20:42:28.909606 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:29 server1 kubelet[14619]: E0307 20:42:29.907804 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:29 server1 kubelet[14619]: E0307 20:42:29.908776 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:29 server1 kubelet[14619]: E0307 20:42:29.909785 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:30 server1 kubelet[14619]: E0307 20:42:30.908131 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:30 server1 kubelet[14619]: E0307 20:42:30.909155 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:30 server1 kubelet[14619]: E0307 20:42:30.910228 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:31 server1 kubelet[14619]: E0307 20:42:31.908495 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:465: Failed to list *v1.Service: Get https://107.105.136.28:6443/api/v1/services?limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:31 server1 kubelet[14619]: E0307 20:42:31.909392 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/kubelet.go:474: Failed to list *v1.Node: Get https://107.105.136.28:6443/api/v1/nodes?fieldSelector=metadata.name%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:31 server1 kubelet[14619]: E0307 20:42:31.910461 14619 reflector.go:205] k8s.io/kubernetes/pkg/kubelet/config/apiserver.go:47: Failed to list *v1.Pod: Get https://107.105.136.28:6443/api/v1/pods?fieldSelector=spec.nodeName%3Dserver1&limit=500&resourceVersion=0: dial tcp 107.105.136.28:6443: getsockopt: connection refused
Mar 07 20:42:32 server1 kubelet[14619]: E0307 20:42:32.018611 14619 event.go:209] Unable to write event: 'Patch https://107.105.136.28:6443/api/v1/namespaces/default/events/server1.1519a1c427a76a94: dial tcp 107.105.136.28:6443: getsockopt: connection refused' (may retry after sleeping)

　　6443是Kubernetes集群APIServer的端口，因此猜测是APIServer挂掉了，因此查看正在运行的进程


$ps -aux | grep "kube"

　　发现果然没有有关的进程，因此重启相关的服务


$systemctl restart kube-apiserver
$systemctl restart kube-controller-manager
$systemctl restart kube-scheduler

　　查看状态，可以使用kubectl命令了


root@R740-2-3:~# kubectl get componentstatus
NAME                 STATUS    MESSAGE             ERROR
scheduler            Healthy   ok                  
controller-manager   Healthy   ok                  
etcd-1               Healthy   {"health":"true"}   
etcd-2               Healthy   {"health":"true"}   
etcd-0               Healthy   {"health":"true"}

　

转载于:https://www.cnblogs.com/yuxiaoba/p/9825565.html

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