k8s重启报错：Get “http://localhost:8080/api?timeout=32s“: dial tcp [ ...

1. [root@k8s-master ~]# kubectl get nodes
2. E0322 10:29:10.166586    8455 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
3. E0322 10:29:10.166882    8455 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
4. E0322 10:29:10.168298    8455 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
5. E0322 10:29:10.170502    8455 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
6. E0322 10:29:10.172351    8455 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp [::1]:8080: connect: connection refused
7. The connection to the server localhost:8080 was refused - did you specify the right host or port?

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单从报错可以看出，kubectl 没有利用到证书与k8s api通讯，在初始化集群的时间要想利用kubectl需要，申明证书变量 export KUBECONFIG=/etc/kubernetes/admin.conf ，重启之后 KUBECONFIG 变量失效了。所有需要重新声明，并参加过/etc/profile 全局变量文件。

1. echo "export KUBECONFIG=/etc/kubernetes/kubelet.conf" >> /etc/profile
2. source /etc/profile

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1. [root@k8s-master ~]# kubectl get nodes
2. NAME         STATUS   ROLES           AGE   VERSION
3. k8s-master   Ready    control-plane   15m   v1.28.2

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