EPEL库安装

EPEL是yum的一个软件源,里面包含了许多基本源里没有的软件了，但在我们在使用epel时是需要安装它才可以了.
EPEL，即Extra Packages for Enterprise Linux的简称，是为企业级Linux提供的一组高质量的额外软件包，包括但不限于Red Hat Enterprise Linux (RHEL), CentOS and Scientific Linux (SL), Oracle Enterprise Linux (OEL)。

安装：

***  环境：CentOS  64bit   ***

[root@localhost ~]# yum -y install epel-release
Loaded plugins: fastestmirror, langpacks
base                                                                                                                                                                                       | 3.6 kB  ::
extras                                                                                                                                                                                     | 3.4 kB  ::
updates                                                                                                                                                                                    | 3.4 kB  ::
updates//x86_64/primary_db                                                                                                                                                                | 5.7 MB  ::
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package epel-release.noarch :- will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==================================================================================================================================================================================================================
 Package                                                 Arch                                              Version                                        Repository                                         Size
==================================================================================================================================================================================================================
Installing:
 epel-release                                            noarch                                            -                                            extras                                              k

Transaction Summary
==================================================================================================================================================================================================================
Install   Package

Total download size:  k
Installed size:  k
Downloading packages:
warning: /var/cache/yum/x86_64//extras/packages/epel-release--.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY=========================================== ] 1.2 kB/s |   kB  :: ETA
Public key for epel-release--.noarch.rpm is not installed
epel-release--.noarch.rpm                                                                                                                                                                |   kB  ::
Retrieving key from http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
 Userid     : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
 Fingerprint:  ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
 From       : http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : epel-release--.noarch                                                                                                                                                                        /
  Verifying  : epel-release--.noarch                                                                                                                                                                        / 

Installed:
  epel-release.noarch :-                                                                                                                                                                                       

Complete!
[root@localhost ~]#