背景
本地虚拟机安装docker失败，不，应该说是yum安装软件都失败，前几次安装也失败，没记录，时间长了就忘了咋解决的，这次就记录一下。
[root@blog ~]# yum install -y vim
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
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; 未知的错误"
One of the configured repositories failed (未知),
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解决
更换yum源
备份
sudo cp -r /etc/yum.repos.d /etc/yum.repos.d.bak删除
sudo rm -f /etc/yum.repos.d/*.repo添加
sudo vi /etc/yum.repos.d/CentOS-Base.repo
[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY.cnpmjs.org
enabled=1
[updates]
name=CentOS-$releasever - Updates
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY.cnpmjs.org
enabled=1
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY.cnpmjs.org
enabled=1
清理
sudo yum clean all更新
sudo yum makecache附录
如果遇到下面情况
从 http://mirrors.aliyun.com/centos/RPM-GPG-KEY.cnpmjs.org 检索密钥
获取 GPG 密钥失败：[Errno 14] HTTP Error 404 - Not Found
输入下面
rpm --import https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7结果
[root@blog ~]# yum -y install docker-ce
已加载插件：fastestmirror, product-id, search-disabled-repos, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Loading mirror speeds from cached hostfile
正在解决依赖关系
--> 正在检查事务
---> 软件包 docker-ce.x86_64.3.26.1.4-1.el7 将被 安装
--> 正在处理依赖关系 container-selinux >= 2:2.74，它被软件包 3:docker-ce-26.1.4-1.el7.x86_64 需要
--> 正在处理依赖关系 containerd.io >= 1.6.24，它被软件包 3:docker-ce-26.1.4-1.el7.x86_64 需要
--> 正在处理依赖关系 docker-ce-cli，它被软件包 3:docker-ce-26.1.4-1.el7.x86_64 需要
--> 正在处理依赖关系 docker-ce-rootless-extras，它被软件包 3:docker-ce-26.1.4-1.el7.x86_64 需要
--> 正在检查事务
---> 软件包 container-selinux.noarch.2.2.119.2-1.911c772.el7_8 将被 安装
---> 软件包 containerd.io.x86_64.0.1.6.33-3.1.el7 将被 安装
---> 软件包 docker-ce-cli.x86_64.1.26.1.4-1.el7 将被 安装
--> 正在处理依赖关系 docker-buildx-plugin，它被软件包 1:docker-ce-cli-26.1.4-1.el7.x86_64 需要
--> 正在处理依赖关系 docker-compose-plugin，它被软件包 1:docker-ce-cli-26.1.4-1.el7.x86_64 需要
---> 软件包 docker-ce-rootless-extras.x86_64.0.26.1.4-1.el7 将被 安装
--> 正在检查事务
---> 软件包 docker-buildx-plugin.x86_64.0.0.14.1-1.el7 将被 安装
---> 软件包 docker-compose-plugin.x86_64.0.2.27.1-1.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
======================================================================================================================================================================================================================================================================================
Package 架构 版本 源 大小
======================================================================================================================================================================================================================================================================================
正在安装:
docker-ce x86_64 3:26.1.4-1.el7 docker-ce-stable 27 M
为依赖而安装:
container-selinux noarch 2:2.119.2-1.911c772.el7_8 extras 40 k
containerd.io x86_64 1.6.33-3.1.el7 docker-ce-stable 35 M
docker-buildx-plugin x86_64 0.14.1-1.el7 docker-ce-stable 14 M
docker-ce-cli x86_64 1:26.1.4-1.el7 docker-ce-stable 15 M
docker-ce-rootless-extras x86_64 26.1.4-1.el7 docker-ce-stable 9.4 M
docker-compose-plugin x86_64 2.27.1-1.el7 docker-ce-stable 13 M
事务概要
======================================================================================================================================================================================================================================================================================
安装 1 软件包 (+6 依赖软件包)
总下载量：114 M
安装大小：401 M
Downloading packages:
(1/7): container-selinux-2.119.2-1.911c772.el7_8.noarch.rpm | 40 kB 00:00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-buildx-plugin-0.14.1-1.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY ] 2.5 MB/s | 27 MB 00:00:33 ETA
docker-buildx-plugin-0.14.1-1.el7.x86_64.rpm 的公钥尚未安装
(2/7): docker-buildx-plugin-0.14.1-1.el7.x86_64.rpm | 14 MB 00:00:12
(3/7): containerd.io-1.6.33-3.1.el7.x86_64.rpm | 35 MB 00:00:34
(4/7): docker-ce-26.1.4-1.el7.x86_64.rpm | 27 MB 00:00:25
(5/7): docker-ce-rootless-extras-26.1.4-1.el7.x86_64.rpm | 9.4 MB 00:00:05
(6/7): docker-ce-cli-26.1.4-1.el7.x86_64.rpm | 15 MB 00:00:14
(7/7): docker-compose-plugin-2.27.1-1.el7.x86_64.rpm | 13 MB 00:00:08
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
总计 2.2 MB/s | 114 MB 00:00:51
从 https://mirrors.aliyun.com/docker-ce/linux/centos/gpg 检索密钥
导入 GPG key 0x621E9F35:
用户ID : "Docker Release (CE rpm) <docker@docker.com>"
指纹 : 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
来自 : https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 1/7
正在安装 : containerd.io-1.6.33-3.1.el7.x86_64 2/7
正在安装 : docker-buildx-plugin-0.14.1-1.el7.x86_64 3/7
正在安装 : docker-compose-plugin-2.27.1-1.el7.x86_64 4/7
正在安装 : 1:docker-ce-cli-26.1.4-1.el7.x86_64 5/7
正在安装 : docker-ce-rootless-extras-26.1.4-1.el7.x86_64 6/7
正在安装 : 3:docker-ce-26.1.4-1.el7.x86_64 7/7
验证中 : docker-compose-plugin-2.27.1-1.el7.x86_64 1/7
验证中 : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 2/7
验证中 : containerd.io-1.6.33-3.1.el7.x86_64 3/7
验证中 : 3:docker-ce-26.1.4-1.el7.x86_64 4/7
验证中 : 1:docker-ce-cli-26.1.4-1.el7.x86_64 5/7
验证中 : docker-ce-rootless-extras-26.1.4-1.el7.x86_64 6/7
验证中 : docker-buildx-plugin-0.14.1-1.el7.x86_64 7/7
已安装:
docker-ce.x86_64 3:26.1.4-1.el7
作为依赖被安装:
container-selinux.noarch 2:2.119.2-1.911c772.el7_8 containerd.io.x86_64 0:1.6.33-3.1.el7 docker-buildx-plugin.x86_64 0:0.14.1-1.el7 docker-ce-cli.x86_64 1:26.1.4-1.el7 docker-ce-rootless-extras.x86_64 0:26.1.4-1.el7 docker-compose-plugin.x86_64 0:2.27.1-1.el7
完毕！
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