CentOS7.3安装第三方源

更换CentOS-Base源（阿里云镜像）

# cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

# rpm  -import   http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

安装EPEL源（阿里云镜像）

# rpm -Uvh   http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm

# rpm  -import  http://mirrors.aliyun.com/epel/RPM-GPG-KEY-EPEL-7

# rpm  -import  http://mirrors.aliyun.com/epel/RPM-GPG-KEY-EPEL-7Server

安装 yum-axelget 插件

# yum install yum-axelget 

安装该插件的同时会安装另一个软件 axel。axel 是一个并行下载工具，在下载 http、ftp 等简单协议的文件时非常好用。

安装elrepo源（清华镜像）

# rpm -Uvh   https://mirrors.tuna.tsinghua.edu.cn/elrepo/extras/el7/x86_64/RPMS/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

安装Repoforge源（清华镜像）

浏览器打开：

https://mirrors.tuna.tsinghua.edu.cn/help/repoforge/

手动添加源

cat >  /etc/yum.repos.d/rpmforge.repo << EOF 

[rpmforge]

name = RHEL $releasever - RPMforge.net - dag

baseurl = https://mirrors.tuna.tsinghua.edu.cn/repoforge/redhat/el7/en/$basearch/rpmforge

mirrorlist = http://mirrorlist.repoforge.org/el7/mirrors-rpmforge

enabled = 1

protect = 0

gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag

gpgcheck = 1

[rpmforge-extras]

name = RHEL $releasever - RPMforge.net - extras

baseurl = https://mirrors.tuna.tsinghua.edu.cn/repoforge/redhat/el7/en/$basearch/extras

mirrorlist = http://mirrorlist.repoforge.org/el7/mirrors-rpmforge-extras

enabled = 0

protect = 0

gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag

gpgcheck = 1

[rpmforge-testing]

name = RHEL $releasever - RPMforge.net - testing

baseurl = https://mirrors.tuna.tsinghua.edu.cn/repoforge/redhat/el7/en/$basearch/testing

mirrorlist = http://mirrorlist.repoforge.org/el7/mirrors-rpmforge-testing

enabled = 0

protect = 0

gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag

gpgcheck = 1

EOF

# rpm  -import   https://mirrors.tuna.tsinghua.edu.cn/repoforge/RPM-GPG-KEY.dag.txt

=======================================================

安装Nux Dextop源

更改centos桌面主题

此源包含Centos桌面和多媒体应用依赖EPEL源，但 Nux Dextop源与Repoforge源有冲突，此源默认 设置为 关闭状态。

# rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

# vi  /etc/yum.repos.d/nux-dextop.repo 

enabled=0

安装应用  例：

# yum --enablerepo=nux-dextop install   

=======================================================  安装IUS 源（清华镜像）

# rpm -import  https://mirrors.tuna.tsinghua.edu.cn/ius/IUS-COMMUNITY-GPG-KEY

# rpm -Uvh  https://mirrors.tuna.tsinghua.edu.cn/ius/stable/CentOS/7/x86_64/yum-plugin-replace-0.2.7-1.ius.centos7.noarch.rpm

更新缓存

# yum makecache