linux執行yum install報錯you do not have any GPG public keys installed

Linux執行yum install報錯 目錄 一、報錯信息 二、報錯分析 三、解決方法 一、報錯信息 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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