Centos7上安装docker

Centos7上安装docker

改编自:https://www.cnblogs.com/yufeng218/p/8370670.html

Docker从1.13版本之后采用时间线的方式作为版本号,分为社区版CE和企业版EE。

社区版是免费提供给个人开发者和小型团体使用的,企业版会提供额外的收费服务,比如经过官方测试认证过的基础设施、容器、插件等。

社区版按照stable和edge两种方式发布,每个季度更新stable版本,如17.06,17.09;每个月份更新edge版本,如17.09,17.10。
一、安装docker

1、Docker 要求 CentOS 系统的内核版本高于 3.10 ,查看本页面的前提条件来验证你的CentOS 版本是否支持 Docker 。

通过 uname -r 命令查看你当前的内核版本

$ uname -r

[[email protected] ~]# uname -r
3.10.0-693.el7.x86_64

2、使用 root 权限登录 Centos。确保 yum 包更新到最新。

$ sudo yum update

(代码不贴了)

3、卸载旧版本(如果安装过旧版本的话)

$ sudo yum remove docker docker-common docker-selinux docker-engine

[[email protected] ~]# sudo yum remove docker docker-common docker-selinux docker-engine
已加载插件:fastestmirror, langpacks
参数 docker 没有匹配
参数 docker-common 没有匹配
参数 docker-selinux 没有匹配
参数 docker-engine 没有匹配
不删除任何软件包
[[email protected] ~]# 

4、安装需要的软件包, yum-util 提供yum-config-manager功能,另外两个是devicemapper驱动依赖的

$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2

[[email protected] ~]# sudo yum install -y yum-utils device-mapper-persistent-data lvm2
已加载插件:fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: mirrors.zju.edu.cn
* updates: centos.ustc.edu.cn
软件包 yum-utils-1.1.31-50.el7.noarch 已安装并且是最新版本
软件包 device-mapper-persistent-data-0.7.3-3.el7.x86_64 已安装并且是最新版本
软件包 7:lvm2-2.02.180-10.el7_6.7.x86_64 已安装并且是最新版本
无须任何处理

5、设置yum源

$ sudo yum-config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo

[[email protected] ~]# cat /etc/yum.repos.d/docker-ce.repo 
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-stable-debuginfo]
name=Docker CE Stable - Debuginfo $basearch
baseurl=https://download.docker.com/linux/centos/7/debug-$basearch/stable
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-stable-source]
name=Docker CE Stable - Sources
baseurl=https://download.docker.com/linux/centos/7/source/stable
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-edge]
name=Docker CE Edge - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-edge-debuginfo]
name=Docker CE Edge - Debuginfo $basearch
baseurl=https://download.docker.com/linux/centos/7/debug-$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-edge-source]
name=Docker CE Edge - Sources
baseurl=https://download.docker.com/linux/centos/7/source/edge
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-test]
name=Docker CE Test - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-test-debuginfo]
name=Docker CE Test - Debuginfo $basearch
baseurl=https://download.docker.com/linux/centos/7/debug-$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-test-source]
name=Docker CE Test - Sources
baseurl=https://download.docker.com/linux/centos/7/source/test
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-nightly]
name=Docker CE Nightly - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-nightly-debuginfo]
name=Docker CE Nightly - Debuginfo $basearch
baseurl=https://download.docker.com/linux/centos/7/debug-$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

[docker-ce-nightly-source]
name=Docker CE Nightly - Sources
baseurl=https://download.docker.com/linux/centos/7/source/nightly
enabled=0
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

6、可以查看所有仓库中所有docker版本,并选择特定版本安装

$ yum list docker-ce –showduplicates | sort -r

[[email protected] ~]# yum list docker-ce --showduplicates | sort -r
已加载插件:fastestmirror, langpacks
可安装的软件包
* updates: centos.ustc.edu.cn
Loading mirror speeds from cached hostfile
* extras: mirrors.zju.edu.cn
docker-ce.x86_64 3:18.09.7-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.6-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.5-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.4-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.3-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.2-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.3.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.2.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.3.ce-1.el7 docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
* base: centos.ustc.edu.cn

7、安装docker

$ sudo yum install docker-ce #由于repo中默认只开启stable仓库,故这里安装的是最新稳定版18.09.7
$ sudo yum install <FQPN> # 例如:sudo yum install docker-ce-17.12.0.ce

[[email protected] ~]# sudo yum install docker-ce
已加载插件:fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: mirrors.zju.edu.cn
* updates: centos.ustc.edu.cn
正在解决依赖关系
--> 正在检查事务
---> 软件包 docker-ce.x86_64.3.18.09.7-3.el7 将被 安装
--> 正在处理依赖关系 container-selinux >= 2.9,它被软件包 3:docker-ce-18.09.7-3.el7.x86_64 需要
--> 正在处理依赖关系 containerd.io >= 1.2.2-3,它被软件包 3:docker-ce-18.09.7-3.el7.x86_64 需要
--> 正在处理依赖关系 docker-ce-cli,它被软件包 3:docker-ce-18.09.7-3.el7.x86_64 需要
--> 正在检查事务
---> 软件包 container-selinux.noarch.2.2.99-1.el7_6 将被 安装
---> 软件包 containerd.io.x86_64.0.1.2.6-3.3.el7 将被 安装
---> 软件包 docker-ce-cli.x86_64.1.18.09.7-3.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 3:18.09.7-3.el7 docker-ce-stable 19 M
为依赖而安装:
container-selinux noarch 2:2.99-1.el7_6 extras 39 k
containerd.io x86_64 1.2.6-3.3.el7 docker-ce-stable 26 M
docker-ce-cli x86_64 1:18.09.7-3.el7 docker-ce-stable 14 M

事务概要
====================================================================================================================================
安装 1 软件包 (+3 依赖软件包)

总下载量:59 M
安装大小:243 M
Is this ok [y/d/N]: y

8、启动并加入开机启动

$ sudo systemctl start docker
$ sudo systemctl enable docker

[[email protected] ~]# sudo systemctl start docker
[[email protected] ~]# sudo systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active: active (running) since 四 2019-07-04 19:00:15 CST; 5s ago
Docs: https://docs.docker.com
Main PID: 39515 (dockerd)
Tasks: 12
Memory: 31.6M
CGroup: /system.slice/docker.service
└─39515 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

7月 04 19:00:14 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:14.543267103+08:00" level=info msg="pickfirstB...=grpc
7月 04 19:00:14 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:14.543329196+08:00" level=info msg="pickfirstB...=grpc
7月 04 19:00:14 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:14.575321922+08:00" level=info msg="Graph migr...onds"
7月 04 19:00:14 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:14.576607868+08:00" level=info msg="Loading co...art."
7月 04 19:00:14 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:14.873847435+08:00" level=info msg="Default br...ress"
7月 04 19:00:15 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:15.100425068+08:00" level=info msg="Loading co...one."
7月 04 19:00:15 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:15.140608095+08:00" level=info msg="Docker dae....09.7
7月 04 19:00:15 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:15.140901115+08:00" level=info msg="Daemon has...tion"
7月 04 19:00:15 localhost.localdomain dockerd[39515]: time="2019-07-04T19:00:15.151981654+08:00" level=info msg="API listen...sock"
7月 04 19:00:15 localhost.localdomain systemd[1]: Started Docker Application Container Engine.
Hint: Some lines were ellipsized, use -l to show in full.
[[email protected] ~]# sudo systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[[email protected] ~]# 

9、验证安装是否成功(有client和service两部分表示docker安装启动都成功了)

$ docker version

[[email protected] ~]# docker version
Client:
Version: 18.09.7
API version: 1.39
Go version: go1.10.8
Git commit: 2d0083d
Built: Thu Jun 27 17:56:06 2019
OS/Arch: linux/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 18.09.7
API version: 1.39 (minimum version 1.12)
Go version: go1.10.8
Git commit: 2d0083d
Built: Thu Jun 27 17:26:28 2019
OS/Arch: linux/amd64
Experimental: false
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