introduce
Epel (Extra Packages for Enterprise Linux, an Enterprise Linux extra package) is a software warehouse project maintained by the Fedora team that provides Rhel/centos with packages that they do not provide by default. This source is compatible with Rhel and derivative versions such as CentOS and Scientific Linux.
We can easily get tens of thousands of software from epel sources that are not available on CentOS from the Yum command. Most of the packages provided by Epel are based on their corresponding Fedora packages and do not conflict with or replace their files with the Enterprise Linux release version of the software.
More details about Epel items can be obtained from the following websites: Https://fedoraproject.org/wiki/EPEL
hint : Rhel/centos system has a lot of third-party sources, more popular such as Rpmforge,rpmfusion,epel,remi and so on. It should be noted, however, that if a system adds more than one third-party source, a conflict may arise--a package can be obtained from multiple sources, and some sources will replace the underlying package of the system, which may result in unexpected errors. It is known that Rpmforge and Epel conflict. We recommend that you adjust the source priority or selective installation source for these issues, but this requires complex operations, and if you are unsure how to operate, we recommend that you install only one third-party source. Install 1, to install Epel, we first want to download the Epel RPM installation package. Download Link: Http://download.fedoraproject.org/pub/epel then select the version to download again, for example:
http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
http://mirrors.opencas.cn/epel/7/x86_64/e/(Centos7 version of the path is stored in the beginning of the first letter of the directory)
2. Installation: Rpm-ivh epel-release*
3, check: Yum repolist