centos6 yum源失效的最新操作方式，解决：[Errno 14] PYCURL ERROR 22

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-6.repo

[root@hadoop101 yum.repos.d]# yum makecache 
已加载插件：fastestmirror, refresh-packagekit, security
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository contrib is listed more than once in the configuration
Determining fastest mirrors* base: mirrors.aliyun.com* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
http://mirrors.aliyun.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"
尝试其他镜像。
To address this issue please refer to the below knowledge base article https://access.redhat.com/articles/1320623If above article doesn't help to resolve this issue please open a ticket with Red Hat Support.http://mirrors.aliyuncs.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://mirrors.aliyuncs.com/centos/6/os/x86_64/repodata/repomd.xml: (28, 'connect() timed out!')
尝试其他镜像。
http://mirrors.cloud.aliyuncs.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.cloud.aliyuncs.com'"
尝试其他镜像。
错误：Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
[root@hadoop101 yum.repos.d]#   

1. 官方: 非阿里云ECS用户会出现 Couldn’t resolve host ‘mirrors.cloud.aliyuncs.com’ 信息，不影响使用。用户也可自行修改相关配置: eg:

   sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
   

2. 替换http成https

   sed -i  's/http/https/g' /etc/yum.repos.d/CentOS-Base.repo
   

3. 替换版本，$releasever替换6.8, 6.8是我用的版本

   sed -i  's/$releasever/6.8/g' /etc/yum.repos.d/CentOS-Base.repo
   

4. 替换centos为centos-vault

   sed -i  's/centos/centos-vault/g' /etc/yum.repos.d/CentOS-Base.repo
   

[root@hadoop101 yum.repos.d]# yum clean all && yum makecache
已加载插件：fastestmirror, refresh-packagekit, security
Cleaning repos: base extras updates
清理一切
Cleaning up list of fastest mirrors
已加载插件：fastestmirror, refresh-packagekit, security
Determining fastest mirrors
base                                                     | 3.7 kB     00:00     
base/group_gz                                            | 226 kB     00:00     
base/filelists_db                                        | 6.4 MB     00:01     
base/primary_db                                          | 4.7 MB     00:00     
base/other_db                                            | 2.8 MB     00:00     
extras                                                   | 3.4 kB     00:00     
extras/filelists_db                                      |  38 kB     00:00     
extras/prestodelta                                       | 1.3 kB     00:00     
extras/primary_db                                        |  37 kB     00:00     
extras/other_db                                          |  51 kB     00:00     
updates                                                  | 3.4 kB     00:00     
updates/filelists_db                                     | 3.5 MB     00:00     
updates/prestodelta                                      | 390 kB     00:00     
updates/primary_db                                       | 5.4 MB     00:01     
updates/other_db                                         |  74 MB     00:12     
元数据缓存已建立
[root@hadoop101 yum.repos.d]#