centos 6 yum源不可用安装报YumRepo Error: All mirror URLs are not using ftp, http[s] or file

cat /etc/redhat-release查看版本
vim /etc/yum.repos.d/CentOS-base.repo
（可以先提前备份一下）
内容清空
将下面代码6.5改成自己的版本复制进去
（此处使用的是国外源，若使用国内源，请往下看）

[base]
name=CentOS-6.5 - base
#mirrorlist=http://#mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=os
baseurl=https://archive.kernel.org/centos-vault/6.5/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#released updates 
[updates]
name=CentOS-6.5 - Updates
#mirrorlist=http://#mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=updates
baseurl=https://archive.kernel.org/centos-vault/6.5/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-6.5 - Extras
#mirrorlist=http://#mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=extras
baseurl=https://archive.kernel.org/centos-vault/6.5/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.5 - Plus
#mirrorlist=http://#mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=centosplus
baseurl=https://archive.kernel.org/centos-vault/6.5/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users
[contrib]
name=CentOS-6.5 - Contrib
#mirrorlist=http://#mirrorlist.centos.org/?release=6.5&arch=$basearch&repo=contrib
baseurl=https://archive.kernel.org/centos-vault/6.5/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

清理缓存 
 # yum clean all  
 更新缓存
 # yum makecache
 #测试
 yum install -y unzip zip

由于比较慢
可以使用163 centos7的yum源

[base]
name=CentOS-7 - base - 163.com
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#released updates 
[updates]
name=CentOS-7 - Updates - 163.com
baseurl=http://mirrors.163.com/centos/7/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful
[extras]
name=CentOS-7 - Extras - 163.com
baseurl=http://mirrors.163.com/centos/7/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-7 - Plus - 163.com
baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users
[contrib]
name=CentOS-7 - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/7/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

参考：https://blog.csdn.net/weixin_44160584/article/details/110872926