问题解决The connection to the server localhost:8080 was refused
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问题分析
原因：kubernetes master没有与本机绑定，集群初始化的时候没有绑定，此时设置在本机的环境变量即可解决问题。
解决方式
步骤一：设置环境变量
具体根据情况，此处记录linux设置该环境变量
方式一：编辑文件设置
vim /etc/profile
在底部增加新的环境变量 export KUBECONFIG=/etc/kubernetes/admin.conf
方式二:直接追加文件内容
echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> /etc/profile
步骤二：使生效
source /etc/profile
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