linux执行yum install报错you do not have any GPG public keys installed

Linux执行yum install报错 目录 一、报错信息 二、报错分析 三、解决方法 一、报错信息 You  have  enabled checking of packages via GPG keys.  This is a good thing. However, you do not  have   any GPG public keys installed. You need to
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