Invalid GPG Key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

1. yum安装报错

Invalid GPG Key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7: No key found in given key data

解决：

1. 打开 https://www.centos.org/keys找到对应的centos-7-signing-key下载
2. 将内容复制 写入/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7即可