背景
EPEL (Extra Packages for Enterprise Linux) 是Fedora小组维护的一个软件仓库项目，提供了官方源不支持的或者官方更新缓慢的包，很多开源软件需要用epel源进行安装，do it.
安装
1.查看已有源，sudo yum repolist
Loading mirror speeds from cached hostfile * epel: mirror.sjc02.svwh.net
2.卸载。如果已有epel 源但不可用并且问题不好定位，则执行yum -y remove epel-release卸载旧版
3.安装epel源
; centos7就选`latest-7`,同理6选latest-6wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
4.安装rpm
sudo yum install epel-release-latest-7.noarch.rpm
5.检查版本:
rpm -q epel-release
其他
-
yum repo的路径为/etc/yum.repos.d -
epel.repo的文件内容如下,如果需要关闭某个源，则将配置文件中的enabled置为0
[epel] name=Extra Packages for Enterprise Linux 7 - $basearch #baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch failovermethod=priority enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 [epel-debuginfo] name=Extra Packages for Enterprise Linux 7 - $basearch - Debug #baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch/debug metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-7&arch=$basearch failovermethod=priority enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 gpgcheck=1 [epel-source] name=Extra Packages for Enterprise Linux 7 - $basearch - Source #baseurl=http://download.fedoraproject.org/pub/epel/7/SRPMS metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-source-7&arch=$basearch failovermethod=priority enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 gpgcheck=1