具体原因：使用yum搜索某些rpm包，找不到包是因为CentOS是RedHat企业版编译过来的，去掉了所有关于版权问题的东西。安装EPEL后可以很好的解决这个问题。EPEL(Extra Packages for Enterprise Linux )即企业版Linux的扩展包，提供了很多可共Centos使用的组件，安装完这个以后基本常用的rpm都可以找到。
Method #1 从企业版Linux库配置包中安装扩展包。（推荐 ）
[[email protected] ~]# sudo yum install epel-release Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package epel-release.noarch 0:7-5 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: epel-release noarch 7-5 extras 14 k Transaction Summary ================================================================================ Install 1 Package Total download size: 14 k Installed size: 24 k Is this ok [y/d/N]: y Downloading packages: epel-release-7-5.noarch.rpm | 14 kB 00:01 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : epel-release-7-5.noarch 1/1 Verifying : epel-release-7-5.noarch 1/1 Installed: epel-release.noarch 0:7-5 Complete!
Method #2 从dl.fedoraproject.org安装扩展包。
1.使用wget命令下载epel-release：
[[email protected] ~]# cd/tmp [[email protected] ~]# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm ls*.rpm
或者通过wiki查找到对应版本的epel后，再下载：
[[email protected] ~]# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/epel-release-7-5.noarch.rpm 或 [[email protected] ~]# wget http://mirrors.ustc.edu.cn/fedora/epel/7/x86_64/epel-release-7-5.noarch.rpm //中国科学技术大学镜像
2.安装：
[[email protected] ~]# sudo yum install epel-release-7.noarch.rpm
注意：
1. epel的版本要与centos的版本相对应，否则安装失败，即centos7版本要对应epel7版本。
2. rpm安装完后，rpm -ql epel*，确提示未安装，此时要导入rpm的签名信息
#rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 （root身份执行）
时间： 2024-12-15 05:02:10