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

centos6 ping外网能通yum无法用原因 ，

YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt

解决方案

为了解决这个问题，我们需要修改/etc/yum.repos.d/CentOS-Base.repo，然后替换掉所有镜像源。

1.进入到 /etc/yum.repos.d/目录

cd /etc/yum.repos.d/

2.备份原文件

cp CentOS-Base.repo CentOS-Base.repo.old

3.编辑新文件

vi CentOS-Base.repo

4.替换掉镜像源

# CentOS-Base.repo

#

# The mirror system uses the connecting IP address of the client and the

# update status of each mirror to pick mirrors that are updated to and

# geographically close to the client.  You should use this for CentOS updates

# unless you are manually picking other mirrors.

#

# If the mirrorlist= does not work for you, as a fall back you can try the

# remarked out baseurl= line instead.

#

#

[os]

name=Qcloud centos os - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/os/$basearch/

enabled=1

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[updates]

name=Qcloud centos updates - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/updates/$basearch/

enabled=1

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[centosplus]

name=Qcloud centosplus - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/centosplus/$basearch/

enabled=0

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[contrib]

name=Qcloud centos contrib - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/contrib/$basearch/

enabled=0

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[cr]

name=Qcloud centos cr - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/cr/$basearch/

enabled=0

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[extras]

name=Qcloud centos extras - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/extras/$basearch/

enabled=1

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

[fasttrack]

name=Qcloud centos fasttrack - $basearch

baseurl=http://mirrors.cloud.tencent.com/centos/$releasever/fasttrack/$basearch/

enabled=0

gpgcheck=1

gpgkey=http://mirrors.cloud.tencent.com/centos/RPM-GPG-KEY-CentOS-6

.清理yum缓存

yum clean all

.yum makecache

问题解决啦！

原因

CentOS 6 于2020年11月30日停止维护，而Yum想要连接旧版本的仓库。所以，我们需要更新陈旧版本的仓库然后指向vault。

linux能ping通外网火狐浏览器打不开网页，这个原因换一个HTTP看，估计是HTTPS原因。 

正如错误提示，https连接的公钥私钥创建不成立，加密通道创建失败无法连接。你ping的时候能成功应该用的是http协议。