Centos yum exception problem
When you encountered a problem with yum update while building the environment, the following error was reported:
YumRepo Error: All mirror URLs are not using ftp, http [s] or file.
Eg. $releasever is not a valid release or hasnt been released yet/
Removing mirrorlist with no valid mirrors: / var/cache/yum/base/mirrorlist.txt
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
There are generally three reasons for analysis:
1. It is possible that the firewall blocked the outbound http request or ftp request, service iptables status
two。 It is possible that the dns is incorrect and cannot be parsed properly. Change it to 8.8.8.8.
3. The system cannot get the Release number
When testing the environment, you can use ping www.baidu.com to show that you can ping, which means that there is no problem with DNS, which may be the third reason.
You need to modify * .yum by replacing the $releasever variable with 6 in the repo source file.
Vim / etc/yum.repos.d/CentOS6-Base-163.repo
[
[base]
Name=CentOS-6-Base-163.com
Baseurl= http://mirrors.163.com/centos/6/os/$basearch/
# mirrorlist= http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
Gpgcheck=1
Gpgkey= http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
# released updates
[updates]
Name=CentOS-6-Updates-163.com
Baseurl= http://mirrors.163.com/centos/6/updates/$basearch/
# mirrorlist= http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
Gpgcheck=1
Gpgkey= http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
# additional packages that may be useful
[extras]
Name=CentOS-6-Extras-163.com
Baseurl= http://mirrors.163.com/centos/6/extras/$basearch/
# mirrorlist= http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras
Gpgcheck=1
Gpgkey= http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
# additional packages that extend functionality of existing packages
[centosplus]
Name=CentOS-6-Plus-163.com
Baseurl= http://mirrors.163.com/centos/6/centosplus/$basearch/
# mirrorlist= http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus
Gpgcheck=1
Enabled=0
Gpgkey= http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
# contrib-packages by Centos Users
[contrib]
Name=CentOS-6-Contrib-163.com
Baseurl= http://mirrors.163.com/centos/6/contrib/$basearch/
# mirrorlist= http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contrib
Gpgcheck=1
Enabled=0
Gpgkey= http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
]
Last update cache: yum makecache
