warning: mysql-community-server-5.7.25-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY error: Failed dependencies: libaio.so.1()(64bit) is needed by mysql-community-server-5.7.25-1.el7.x86_64 libaio.so.1(LIBAIO_0.1)(64bit) is needed by mysql-community-server-5.7.25-1.el7.x86_64 libaio.so.1(LIBAIO_0.4)(64bit) is needed by mysql-community-server-5.7.25-1.el7.x86_64
Linux下rpm方式安装MySQL遇到warning: mysql-community-server-5.7.25-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY这个错误，这是因为yum安装了旧版本的GPG keys造成的 解决办法：后面加上 --force --nodeps 如： rpm -ivh MySQL-server-5.5.46-1.linux2.6.x86_64.rpm --force --nodeps 即可
