安装rpm包是提示：Package *.rpm is not signed

解决方案是：更改 /etc/yum.conf 下的 gpgcheck=1 为 gpgcheck=0

关于 yum.conf 的详细可参考 man yum.conf。其中对 gpgcheck 的描述是：

gpgcheck
              Either  ‘1’  or ‘0’. This tells yum whether or not it should perform a GPG signature check on pack-
              ages. When this is set in the [main] section it sets the default for all repositories. This  option
              also  determines whether or not an install of a package from a local RPM file will be GPG signature
              checked. The default is ‘0’.