感谢博客园大佬的分享https://www.cnblogs.com/yufeng218/p/8370670.html
1.查看系统内核版本号
Docker 要求 CentOS 系统的内核版本高于 3.10 ，其实Centos 7.0对应的内核版本就是3.10.0-123.el7.x86_64
，我们忽略这一步也是可以的。
[root@centos7 ~]# uname -a
Linux centos7.0-x64-3.10.0-123 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@centos7 ~]# uname -r
3.10.0-123.el7.x86_64
2.更新yum
[root@centos7 ~]# sudo yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.njupt.edu.cn
* extras: mirrors.zju.edu.cn
* updates: mirrors.zju.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package ModemManager-glib.x86_64 0:1.1.0-6.git20130913.el7 will be updated
---> Package ModemManager-glib.x86_64 0:1.6.10-1.el7 will be an update
---> Package NetworkManager.x86_64 1:0.9.9.1-13.git20140326.4dba720.el7 will be obsoleted
---> Package NetworkManager.x86_64 1:1.12.0-10.el7_6 will be obsoleting
--> Processing Dependency: NetworkManager-libnm(x86-64) = 1:1.12.0-10.el7_6 for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_8_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_6_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_4_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_2_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_12_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_10_2)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
--> Processing Dependency: libnm.so.0(libnm_1_10_0)(64bit) for package: 1:NetworkManager-1.12.0-10.el7_6.x86_64
...................................................................中间省略.....................................................................................
sqlite.x86_64 0:3.7.17-8.el7 sudo.x86_64 0:1.8.23-3.el7
systemd.x86_64 0:219-62.el7_6.7 systemd-libs.x86_64 0:219-62.el7_6.7
systemd-sysv.x86_64 0:219-62.el7_6.7 tar.x86_64 2:1.26-35.el7
teamd.x86_64 0:1.27-6.el7_6.1 tuned.noarch 0:2.10.0-6.el7_6.3
tzdata.noarch 0:2019b-1.el7 util-linux.x86_64 0:2.23.2-59.el7_6.1
vim-minimal.x86_64 2:7.4.160-6.el7_6 virt-what.x86_64 0:1.18-4.el7
wpa_supplicant.x86_64 1:2.6-12.el7 xfsprogs.x86_64 0:4.5.0-19.el7_6
xz.x86_64 0:5.2.2-1.el7 xz-libs.x86_64 0:5.2.2-1.el7
yum.noarch 0:3.4.3-161.el7.centos yum-plugin-fastestmirror.noarch 0:1.1.31-50.el7
zlib.x86_64 0:1.2.7-18.el7
Replaced:
NetworkManager.x86_64 1:0.9.9.1-13.git20140326.4dba720.el7 grub2.x86_64 1:2.02-0.2.10.el7.centos.1
grub2-tools.x86_64 1:2.02-0.2.10.el7.centos.1 libertas-sd8686-firmware.noarch 0:20140213-0.3.git4164c23.el7
libertas-sd8787-firmware.noarch 0:20140213-0.3.git4164c23.el7 libertas-usb8388-firmware.noarch 2:20140213-0.3.git4164c23.el7
pygobject3-base.x86_64 0:3.8.2-4.el7
Complete!
看到Complete即可，这需要一点时间，因网络情况而定
3.卸载旧版本(如果安装过旧版本的话，我这里是没安装的)
[root@centos7 ~]# sudo yum remove docker docker-common docker-selinux docker-engine
Loaded plugins: fastestmirror
No Match for argument: docker
No Match for argument: docker-common
No Match for argument: docker-selinux
No Match for argument: docker-engine
No Packages marked for removal
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
[root@centos7 ~]# sudo yum install -y yum-utils device-mapper-persistent-data lvm2
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.zju.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
Package device-mapper-persistent-data-0.7.3-3.el7.x86_64 already installed and latest version
Package 7:lvm2-2.02.180-10.el7_6.8.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package yum-utils.noarch 0:1.1.31-50.el7 will be installed
--> Processing Dependency: python-kitchen for package: yum-utils-1.1.31-50.el7.noarch
--> Processing Dependency: libxml2-python for package: yum-utils-1.1.31-50.el7.noarch
--> Running transaction check
---> Package libxml2-python.x86_64 0:2.9.1-6.el7_2.3 will be installed
---> Package python-kitchen.noarch 0:1.1.1-5.el7 will be installed
--> Processing Dependency: python-chardet for package: python-kitchen-1.1.1-5.el7.noarch
--> Running transaction check
---> Package python-chardet.noarch 0:2.2.1-1.el7_1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================================================================================
Package Arch Version Repository Size
=======================================================================================================================================
Installing:
yum-utils noarch 1.1.31-50.el7 base 121 k
Installing for dependencies:
libxml2-python x86_64 2.9.1-6.el7_2.3 base 247 k
python-chardet noarch 2.2.1-1.el7_1 base 227 k
python-kitchen noarch 1.1.1-5.el7 base 267 k
Transaction Summary
=======================================================================================================================================
Install 1 Package (+3 Dependent packages)
Total download size: 861 k
Installed size: 4.3 M
Downloading packages:
(1/4): libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm | 247 kB 00:00:00
(2/4): python-kitchen-1.1.1-5.el7.noarch.rpm | 267 kB 00:00:00
(3/4): python-chardet-2.2.1-1.el7_1.noarch.rpm | 227 kB 00:00:15
(4/4): yum-utils-1.1.31-50.el7.noarch.rpm | 121 kB 00:00:15
---------------------------------------------------------------------------------------------------------------------------------------
Total 55 kB/s | 861 kB 00:00:15
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : python-chardet-2.2.1-1.el7_1.noarch 1/4
Installing : python-kitchen-1.1.1-5.el7.noarch 2/4
Installing : libxml2-python-2.9.1-6.el7_2.3.x86_64 3/4
Installing : yum-utils-1.1.31-50.el7.noarch 4/4
Verifying : libxml2-python-2.9.1-6.el7_2.3.x86_64 1/4
Verifying : python-kitchen-1.1.1-5.el7.noarch 2/4
Verifying : yum-utils-1.1.31-50.el7.noarch 3/4
Verifying : python-chardet-2.2.1-1.el7_1.noarch 4/4
Installed:
yum-utils.noarch 0:1.1.31-50.el7
Dependency Installed:
libxml2-python.x86_64 0:2.9.1-6.el7_2.3 python-chardet.noarch 0:2.2.1-1.el7_1 python-kitchen.noarch 0:1.1.1-5.el7
Complete!
和上面一样，看到Complete就好
5.设置yum源（这一步比较关键，我们设置阿里的源）
[root@centos7 ~]# sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file http://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
6.可以查看所有仓库中所有docker版本，并选择特定版本安装
[root@centos7 ~]# yum list docker-ce --showduplicates | sort -r
* updates: centos.ustc.edu.cn
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror
* extras: centos.ustc.edu.cn
docker-ce.x86_64 3:19.03.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:19.03.0-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.8-3.el7 docker-ce-stable
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
Available Packages
7.安装docker（可以直接安装最新的，也可以安装指定的版本）
[root@centos7 ~]# sudo yum install docker-ce
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.zju.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package docker-ce.x86_64 3:19.03.1-3.el7 will be installed
--> Processing Dependency: container-selinux >= 2:2.74 for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Processing Dependency: containerd.io >= 1.2.2-3 for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Processing Dependency: libseccomp >= 2.3 for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Processing Dependency: docker-ce-cli for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Processing Dependency: libcgroup for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Processing Dependency: libseccomp.so.2()(64bit) for package: 3:docker-ce-19.03.1-3.el7.x86_64
--> Running transaction check
---> Package container-selinux.noarch 2:2.107-1.el7_6 will be installed
--> Processing Dependency: policycoreutils-python for package: 2:container-selinux-2.107-1.el7_6.noarch
---> Package containerd.io.x86_64 0:1.2.6-3.3.el7 will be installed
---> Package docker-ce-cli.x86_64 1:19.03.1-3.el7 will be installed
---> Package libcgroup.x86_64 0:0.41-20.el7 will be installed
---> Package libseccomp.x86_64 0:2.3.1-3.el7 will be installed
--> Running transaction check
---> Package policycoreutils-python.x86_64 0:2.5-29.el7_6.1 will be installed
--> Processing Dependency: setools-libs >= 3.3.8-4 for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libsemanage-python >= 2.5-14 for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: python-IPy for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: checkpolicy for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.5-29.el7_6.1.x86_64
--> Running transaction check
---> Package audit-libs-python.x86_64 0:2.8.4-4.el7 will be installed
---> Package checkpolicy.x86_64 0:2.5-8.el7 will be installed
---> Package libsemanage-python.x86_64 0:2.5-14.el7 will be installed
---> Package python-IPy.noarch 0:0.75-6.el7 will be installed
---> Package setools-libs.x86_64 0:3.3.8-4.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================================================================================
Package Arch Version Repository Size
=======================================================================================================================================
Installing:
docker-ce x86_64 3:19.03.1-3.el7 docker-ce-stable 24 M
Installing for dependencies:
audit-libs-python x86_64 2.8.4-4.el7 base 76 k
checkpolicy x86_64 2.5-8.el7 base 295 k
container-selinux noarch 2:2.107-1.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 1:19.03.1-3.el7 docker-ce-stable 39 M
libcgroup x86_64 0.41-20.el7 base 66 k
libseccomp x86_64 2.3.1-3.el7 base 56 k
libsemanage-python x86_64 2.5-14.el7 base 113 k
policycoreutils-python x86_64 2.5-29.el7_6.1 updates 456 k
python-IPy noarch 0.75-6.el7 base 32 k
setools-libs x86_64 3.3.8-4.el7 base 620 k
Transaction Summary
=======================================================================================================================================
Install 1 Package (+11 Dependent packages)
Total download size: 91 M
Installed size: 374 M
Is this ok [y/d/N]: y
Downloading packages:
(1/12): container-selinux-2.107-1.el7_6.noarch.rpm | 39 kB 00:00:00
(2/12): audit-libs-python-2.8.4-4.el7.x86_64.rpm | 76 kB 00:00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-19.03.1-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-19.03.1-3.el7.x86_64.rpm is not installed
(3/12): docker-ce-19.03.1-3.el7.x86_64.rpm | 24 MB 00:00:02
(4/12): libseccomp-2.3.1-3.el7.x86_64.rpm | 56 kB 00:00:00
(5/12): libsemanage-python-2.5-14.el7.x86_64.rpm | 113 kB 00:00:00
(6/12): docker-ce-cli-19.03.1-3.el7.x86_64.rpm | 39 MB 00:00:04
(7/12): containerd.io-1.2.6-3.3.el7.x86_64.rpm | 26 MB 00:00:07
(8/12): python-IPy-0.75-6.el7.noarch.rpm | 32 kB 00:00:00
(9/12): setools-libs-3.3.8-4.el7.x86_64.rpm | 620 kB 00:00:00
(10/12): libcgroup-0.41-20.el7.x86_64.rpm | 66 kB 00:00:05
(11/12): checkpolicy-2.5-8.el7.x86_64.rpm | 295 kB 00:00:15
(12/12): policycoreutils-python-2.5-29.el7_6.1.x86_64.rpm | 456 kB 00:00:15
---------------------------------------------------------------------------------------------------------------------------------------
Total 4.8 MB/s | 91 MB 00:00:19
Retrieving key from https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
Importing GPG key 0x621E9F35:
Userid : "Docker Release (CE rpm) "
Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
From : https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libcgroup-0.41-20.el7.x86_64 1/12
Installing : setools-libs-3.3.8-4.el7.x86_64 2/12
Installing : 1:docker-ce-cli-19.03.1-3.el7.x86_64 3/12
Installing : libseccomp-2.3.1-3.el7.x86_64 4/12
Installing : libsemanage-python-2.5-14.el7.x86_64 5/12
Installing : audit-libs-python-2.8.4-4.el7.x86_64 6/12
Installing : python-IPy-0.75-6.el7.noarch 7/12
Installing : checkpolicy-2.5-8.el7.x86_64 8/12
Installing : policycoreutils-python-2.5-29.el7_6.1.x86_64 9/12
Installing : 2:container-selinux-2.107-1.el7_6.noarch 10/12
Installing : containerd.io-1.2.6-3.3.el7.x86_64 11/12
Installing : 3:docker-ce-19.03.1-3.el7.x86_64 12/12
Verifying : libcgroup-0.41-20.el7.x86_64 1/12
Verifying : checkpolicy-2.5-8.el7.x86_64 2/12
Verifying : policycoreutils-python-2.5-29.el7_6.1.x86_64 3/12
Verifying : python-IPy-0.75-6.el7.noarch 4/12
Verifying : audit-libs-python-2.8.4-4.el7.x86_64 5/12
Verifying : libsemanage-python-2.5-14.el7.x86_64 6/12
Verifying : 2:container-selinux-2.107-1.el7_6.noarch 7/12
Verifying : libseccomp-2.3.1-3.el7.x86_64 8/12
Verifying : containerd.io-1.2.6-3.3.el7.x86_64 9/12
Verifying : 1:docker-ce-cli-19.03.1-3.el7.x86_64 10/12
Verifying : 3:docker-ce-19.03.1-3.el7.x86_64 11/12
Verifying : setools-libs-3.3.8-4.el7.x86_64 12/12
Installed:
docker-ce.x86_64 3:19.03.1-3.el7
Dependency Installed:
audit-libs-python.x86_64 0:2.8.4-4.el7 checkpolicy.x86_64 0:2.5-8.el7 container-selinux.noarch 2:2.107-1.el7_6
containerd.io.x86_64 0:1.2.6-3.3.el7 docker-ce-cli.x86_64 1:19.03.1-3.el7 libcgroup.x86_64 0:0.41-20.el7
libseccomp.x86_64 0:2.3.1-3.el7 libsemanage-python.x86_64 0:2.5-14.el7 policycoreutils-python.x86_64 0:2.5-29.el7_6.1
python-IPy.noarch 0:0.75-6.el7 setools-libs.x86_64 0:3.3.8-4.el7
Complete!
或者指定安装版本
[root@centos7 ~]# sudo yum install docker-ce-17.12.0.ce
8.启动并加入开机启动
[root@centos7 ~]# sudo systemctl start docker
[root@centos7 ~]# sudo systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
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)
[root@centos7 ~]# docker version
Client: Docker Engine - Community
Version: 19.03.1
API version: 1.40
Go version: go1.12.5
Git commit: 74b1e89
Built: Thu Jul 25 21:21:07 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.1
API version: 1.40 (minimum version 1.12)
Go version: go1.12.5
Git commit: 74b1e89
Built: Thu Jul 25 21:19:36 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.6
GitCommit: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc:
Version: 1.0.0-rc8
GitCommit: 425e105d5a03fabd737a126ad93d62a9eeede87f
docker-init:
Version: 0.18.0
GitCommit: fec3683
另外也可以这样验证
[root@centos7 ~]# docker pull library/hello-world
Using default tag: latest
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:451ce787d12369c5df2a32c85e5a03d52cbcef6eb3586dd03075f3034f10adcd
Status: Downloaded newer image for hello-world:latest
docker.io/library/hello-world:latest
[root@centos7 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest fce289e99eb9 7 months ago 1.84kB
[root@centos7 ~]# docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/