使えなくなったyumコマンドを使用可能に
作業前
[root@localhost ~]#
[root@localhost ~]# yum update
読み込んだプラグイン:fastestmirror
Determining fastest mirrors
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 不明なエラー"
One of the configured repositories failed (不明),
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. Run the command with the repository temporarily disabled
yum --disablerepo=<repoid> ...
4. Disable the repository permanently, 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 <repoid>
or
subscription-manager repos --disable=<repoid>
5. 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=<repoid>.skip_if_unavailable=true
Cannot find a valid baseurl for repo: base/7/x86_64
[root@localhost ~]#設定ファイルのバックアップ
[root@localhost ~]#
[root@localhost ~]# cp -p /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_yyyymmdd
[root@localhost ~]#設定ファイルの変更
[root@localhost ~]#
[root@localhost ~]# vi /etc/yum.repos.d/CentOS-Base.repo
[root@localhost ~]# 以下をCentOS-Base.repoに書き込み
[base]
name=CentOS-$releasever - Base
baseurl=http://vault.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://vault.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-$releasever - Extras
baseurl=http://vault.centos.org/centos/$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
baseurl=http://vault.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7作業後
[root@localhost ~]#
[root@localhost ~]# yum update
読み込んだプラグイン:fastestmirror
Determining fastest mirrors
base | 3.6 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
(1/4): updates/7/x86_64/primary_db | 27 MB 00:00:01
(2/4): base/7/x86_64/primary_db | 6.1 MB 00:00:02
(3/4): base/7/x86_64/group_gz | 153 kB 00:00:05
(4/4): extras/7/x86_64/primary_db | 253 kB 00:00:11
依存性の解決をしています
--> トランザクションの確認を実行しています。
---> パッケージ NetworkManager.x86_64 1:1.18.8-1.el7 を 更新
～中略～
完了しました!
[root@localhost ~]#
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