[Solved] Linux yum: One of the configured repositories failed (Unknown), and yum doesn’t have.

Error

One of the configured repositories failed (CentOS-7 – Addons – sohu.com),
and yum doesn’t have enough cached data to continue.At this point the only
safe thing yum can do is fail.There are a few ways to work “fix” this:

1.Contact the upstream for the repository and get them to fix the problem.

2.Reconfigure the baseurl/etc.for the repository, to point to a working
upstream.This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).

3.Disable the repository, so yum won’t use it by default.Yum will then
just ignore the repository until you permanently enable it again or use
–enablerepo for temporary usage:

yum-config-manager –disable addons

4.Configure the failing repository to be skipped, if it is unavailable.
Note that yum will try to contact the repo.when it runs most commands,
so will have to try and fail each time (and thus.yum will be be much
slower).If it is a very temporary problem though, this is often a nice
compromise:

yum-config-manager –save –setopt=addons.skip_if_unavailable=true

failure: repodata/repomd.xml from addons: [Errno 256] No more mirrors to try.
http://mirrors.sohu.com/centos/7/addons/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 – Not Found
http://mirror.centos.org/centos/7/addons/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 – Not Found

Solution

1. Please first determine whether you are unable to network or a configuration problem.

ping www.google.com If it is normal ping then you can see this to complete the configuration

The first step: vi /etc/resolv.conf, just add the following line

 

nameserver 8.8.8.8
After the modification, service network restart restarts, try the yum update command, it should be fine. If not, you can proceed to the next step.

 

Step 2: Enter /etc/yum.repos.d, edit vi CentOS-Base.repo, find the following black bold part, comment out the first line (mirrorlist), and uncomment the second line (baseurl).

# 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.
#
#

 

[base]
name=CentOS-$releasever – Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

 

#released updates
[updates]
name=CentOS-$releasever – Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

 

#additional packages that may be useful
[extras]
name=CentOS-$releasever – Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

 

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever – Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

 

~

“CentOS-Base.repo” 44L, 1664C

 

After completing the above two steps and re-executing other installation commands such as yum update, it can run normally.

2. If there is a problem with ping, then.

1. enter the command: vi /etc/sysconfig/network-scripts/ifcfg-ens33 in the Linux system

2. change ONBOOT=no in the file, change no to yes

3. restart the service: service network restart

Test ping and then go to yum, it should work

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