CentOS之——yum安装软件报错（以CentOS 6.8安装percona为例）

问题

具体报错信息如下：

repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.

例如，在CentOS 6.8上安装 percona

yum install http://www.percona.com/downloads/percona-release/redhat/0.1-4/percona-release-0.1-4.noarch.rpm
yum list | grep percona
yum install percona-toolkit

最后一步报错，报错信息如下所示：

warning: rpmts_HdrFromFdno: Header V4 RSA/SHA256 Signature, key ID 8507efa5: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Percona


The GPG keys listed for the "Percona-Release YUM repository - x86_64" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.

解决方案

安装现有的 gpg 公钥，在 /etc/pki/rpm-gpg/ 下，可以执行如下命令直接把所有的都安装上

rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*

如果还是不行，就通过参数指定不检查数字签名，如下所示。

yum -y install * --nogpgcheck

所以，解决安装 percona报错可以使用如下命令解决

yum install percona-toolkit --nogpgcheck