在執行yum時報錯： Loaded plugins: fastestmirrorYou 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 download the keys for packages you wish to install and install them. You can do that by running the command:rpm --import public.gpg.keyAlternatively you can specify the url to the key you would like to use for a repository in the 'gpgkey' option in a repository section and yum? will install it for you.For more information contact your distribution or package provider.Problem repository: centos

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這是由于系統檢測不到GPG公鑰

只需輸入：

rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

再次運行發現錯誤解決了

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