1.2.2.2 CentOS安装和删除Docker
官方文档：https://docs.docker.com/engine/install/centos/
CentOS 6因内核太旧，即使支持安装docker，但会有各种问题，不建议安装
CentOS 7的extras源虽然可以安装docker，但包比较旧，建议从官方源或镜像源站点下载安装docker
CentOS 8有新技术 podman 代替 docker
因此建议在CentOS 7上安装docker
# extras源中包名为docker
[root@centos7 ~]# yum list docker
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Determining fastest mirrors
* base: mirrors.ustc.edu.cn
* epel: mirror.lzu.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Available Packages
docker.x86_64 2:1.13.1-205.git7d71120.el7.centos extras下载rpm包安装：
官方rpm包下载地址：https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
阿里镜像下载地址：https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/
通过yum源安装：
由于官网的yum源太慢，下面使用阿里云的Yum源进行安装
# 备份官方源
[root@centos7 ~]# mkdir /etc/yum.repos.d/backup
[root@centos7 ~]# mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/backup
# centos7安装docker依赖三个yum源:Base,Extras,docker-ce
[root@centos7 ~]# wget -O /etc/yum.repos.d/Centos-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@centos7 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
[root@centos7 ~]# wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@centos7 ~]# yum clean all
[root@centos7 ~]# yum makecache
[root@centos7 ~]# yum install docker-ce -y
[root@centos7 ~]# systemctl enable --now docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.删除 docker
[root@centos7 ~]# yum remove docker-ce -y
# 删除docker资源存放的相关文件
[root@centos7 ~]# rm -rf /var/lib/docker/1.2.2.2.1 Centos 7 基于阿里云的安装docker方法
阿里云说明：https://developer.aliyun.com/mirror/docker-ce?spm=a2c6h.13651102.0.0.3e221b11sUMKNV
# step1：安装一些必要的系统工具
[root@centos7 ~]# yum install yum-utils device-mapper-persistent-data lvm2 -y
# step2: 添加软件源信息
[root@centos7 ~]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
# step：更新并安装docker-ce
[root@centos7 ~]# yum makecache fast
[root@centos7 ~]# yum install docker-ce -y
# step4：开启docker服务
[root@centos7 ~]# systemctl enable --now docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
# 注意:
# 官方软件源默认启用了最新的软件，您可以通过编辑软件源的方式获取各个版本的软件包。例如官方并没有将测试版本的软件源置为可用，您可以通过以下方式开启。同理可以开启各种测试版本等。
# vim /etc/yum.repos.d/docker-ee.repo
# 将[docker-ce-test]下方的enabled=0修改为enabled=1
#
# 安装指定版本的Docker-CE:
# step1：查找docker-ce的版本:
[root@centos7 ~]# yum list docker-ce --showduplicates
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Installed Packages
docker-ce.x86_64 3:20.10.7-3.el7 @docker-ce-stable
Available Packages
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
...省略...
docker-ce.x86_64 3:20.10.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:20.10.7-3.el7 docker-ce-stable
# step2:安装指定版本的docker-ce：（version例如上边的19.03.15-3.el7）
yum install docker-ce-[version]
# 示例
[root@centos7 ~]# yum install docker-ce-19.03.15-3.el7 -y1.2.2.2.2 在centos 7上安装指定版本的docker
[root@centos7 ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
[root@centos7 ~]# ls /etc/yum.repos.d/
CentOS-Base.repo CentOS-Media.repo epel.repo
CentOS-CR.repo CentOS-Sources.repo epel-testing.repo
CentOS-Debuginfo.repo CentOS-Vault.repo
CentOS-fasttrack.repo CentOS-x86_64-kernel.repo
[root@centos7 ~]# mkdir /etc/yum.repos.d/backup
[root@centos7 ~]# mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/backup
[root@centos7 ~]# wget -O /etc/yum.repos.d/Centos-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
--2021-07-07 10:10:06-- http://mirrors.aliyun.com/repo/Centos-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 27.221.120.243, 27.221.120.239, 119.188.122.243, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|27.221.120.243|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2523 (2.5K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/Centos-Base.repo’
100%[===============================================>] 2,523 --.-K/s in 0.005s
2021-07-07 10:10:06 (528 KB/s) - ‘/etc/yum.repos.d/Centos-Base.repo’ saved [2523/2523]
[root@centos7 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
--2021-07-07 10:09:10-- http://mirrors.aliyun.com/repo/epel-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 27.221.120.115, 27.221.120.243, 27.221.120.248, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|27.221.120.115|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 664 [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/epel.repo’
100%[===============================================>] 664 --.-K/s in 0s
2021-07-07 10:09:10 (242 MB/s) - ‘/etc/yum.repos.d/epel.repo’ saved [664/664]
[root@centos7 ~]# wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
--2021-07-07 10:09:14-- https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 27.221.120.248, 27.221.120.118, 119.188.122.240, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|27.221.120.248|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2081 (2.0K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/docker-ce.repo’
100%[===============================================>] 2,081 --.-K/s in 0.002s
2021-07-07 10:09:14 (1.12 MB/s) - ‘/etc/yum.repos.d/docker-ce.repo’ saved [2081/2081]
[root@centos7 ~]# ls /etc/yum.repos.d/
backup Centos-Base.repo docker-ce.repo epel.repo
[root@centos7 ~]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base docker-ce-stable epel extras updates
Cleaning up list of fastest mirrors
[root@centos7 ~]# yum repolist
[root@centos7 ~]# yum list docker-ce* --showduplicates
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Available Packages
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
...省略...
docker-ce-selinux.noarch 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce-selinux.noarch 17.03.3.ce-1.el7 docker-ce-stable
[root@centos7 ~]# yum install docker-ce-19.03.15-3.el7 docker-ce-cli-19.03.15-3.el7 -y
[root@centos7 ~]# docker version
Client: Docker Engine - Community
Version: 19.03.15
API version: 1.40
Go version: go1.13.15
Git commit: 99e3ed8919
Built: Sat Jan 30 03:17:57 2021
OS/Arch: linux/amd64
Experimental: false
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
[root@centos7 ~]# systemctl enable --now docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@centos7 ~]# docker version
Client: Docker Engine - Community
Version: 19.03.15
API version: 1.40
Go version: go1.13.15
Git commit: 99e3ed8919
Built: Sat Jan 30 03:17:57 2021
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.15
API version: 1.40 (minimum version 1.12)
Go version: go1.13.15
Git commit: 99e3ed8919
Built: Sat Jan 30 03:16:33 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.6
GitCommit: d71fcd7d8303cbf684402823e425e9dd2e99285d
runc:
Version: 1.0.0-rc95
GitCommit: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
docker-init:
Version: 0.18.0
GitCommit: fec36831.2.2.2.3 在CentOS 8安装docker
[root@centos8 ~]# tee /etc/yum.repos.d/docker.repo <<EOF
> [docker]
> name=docker
> gpgcheck=0
> baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/
> EOF
[docker]
name=docker
gpgcheck=0
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/
[root@centos8 ~]# dnf install docker-ce -y
[root@centos8 ~]# docker version
Client: Docker Engine - Community
Version: 20.10.7
API version: 1.41
Go version: go1.13.15
Git commit: f0df350
Built: Wed Jun 2 11:56:24 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
[root@centos8 ~]# systemctl enable --now docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@centos8 ~]# docker version
Client: Docker Engine - Community
Version: 20.10.7
API version: 1.41
Go version: go1.13.15
Git commit: f0df350
Built: Wed Jun 2 11:56:24 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.7
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: b0f5bc3
Built: Wed Jun 2 11:54:48 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.6
GitCommit: d71fcd7d8303cbf684402823e425e9dd2e99285d
runc:
Version: 1.0.0-rc95
GitCommit: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
docker-init:
Version: 0.19.0
GitCommit: de40ad0
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