GPG key retrieval failed: [Errno 14] curl#37 - "Couldn't open file /etc/pki

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GPG key retrieval failed: [Errno 14] curl#37 - "Couldn't open file /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7"

原因及解决

yum仓库设置gpgcheck=1，下载安装时会去校验GPG key，本地找不到file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql就会报此错误。

解决方法：

• 禁用gpgcheck，设置gpgcheck=0即可
• 在指定的路径下添加GPG key文件
• 重新yum clean all
  

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