文章参考：https://mirrors.tuna.tsinghua.edu.cn/help/epel/
网上找的都是重装虚拟机，主要是找回原先镜像源 CentOS-.repo配置文件
由于本人安装后做有备份，把备份拉回来
首先从CentOS Extras这个源（本镜像站也有镜像）里安装epel-release
[root@Centos7 yum.repos.d]#yum install epel-release
原先镜像源
[root@Centos7 yum.repos.d]#ls CentOS
CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo
[root@Centos7 yum.repos.d]#cat base.repo
[base]
name=base
baseurl=file:///mnt
gpgcheck=0
[enel]
name=aliyun
baseurl=https://mirrors.aliyun.com/epel/
r
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/
releasever/
releasever/basearch/
gpgcheck=0
enabled=1
修改配置文件
[root@Centos7 yum.repos.d]#sed -e ‘s!^metalink=!#metalink=!g’
-e 's!^#baseurl=!baseurl=!g' -e 's!//download.fedoraproject.org/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!//download.example/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!http://mirrors!https://mirrors!g' -i CentOS-*
清除缓存，安装
[root@Centos7 yum.repos.d]#yum clean all
[root@Centos7 yum.repos.d]#yum install ansible -y
测试
[root@Centos7 yum.repos.d]#ansible --version
ansible 2.9.27
config file = /etc/ansible/ansible.cfg
configured module search path = [u’/root/.ansible/plugins/modules’, u’/usr/share/ansible/plugins/modules’]
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.5 (default, Aug 7 2019, 00:51:29) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)]
