$ sudo yum install -y yum-utils 		#安装工具包
结果:
Loaded plugins: fastestmirror, langpacks
base                                                                                          | 3.6 kB  00:00:00
epel                                                                                          | 4.3 kB  00:00:00
extras                                                                                        | 3.4 kB  00:00:00
update                                                                                        | 3.4 kB  00:00:00
(1/3): epel/7/x86_64/updateinfo                                                               | 797 kB  00:00:00
(2/3): epel/7/x86_64/primary_db                                                               | 4.7 MB  00:00:00
(3/3): update/7/x86_64/primary_db                                                             | 4.8 MB  00:00:00
Loading mirror speeds from cached hostfile
Package yum-utils-1.1.31-40.el7.noarch already installed and latest version
Nothing to do

仓库设置:

$sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
执行结果:
Loaded plugins: fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

执行安装:

$ sudo yum install docker-ce
执行结果:
Loaded plugins: fastestmirror, langpacks
docker-ce-stable                                                                              | 2.9 kB  00:00:00
docker-ce-stable/x86_64/primary_db                                                            | 4.8 kB  00:00:00
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package docker-ce.x86_64 0:17.03.1.ce-1.el7.centos will be installed
--> Processing Dependency: docker-ce-selinux >= 17.03.1.ce-1.el7.centos for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64
--> Processing Dependency: libcgroup for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64
--> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64
--> Running transaction check
---> Package docker-ce-selinux.noarch 0:17.03.1.ce-1.el7.centos will be installed
--> Processing Dependency: policycoreutils-python for package: docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch
---> Package libcgroup.x86_64 0:0.41-11.el7 will be installed
---> Package libseccomp.x86_64 0:2.3.1-2.el7 will be installed
--> Running transaction check
---> Package policycoreutils-python.x86_64 0:2.5-11.el7_3 will be installed
--> Processing Dependency: setools-libs >= 3.3.8-1 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libsemanage-python >= 2.5-5 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: python-IPy for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: checkpolicy for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64
--> Running transaction check
---> Package audit-libs-python.x86_64 0:2.6.5-3.el7_3.1 will be installed
---> Package checkpolicy.x86_64 0:2.5-4.el7 will be installed
---> Package libsemanage-python.x86_64 0:2.5-5.1.el7_3 will be installed
---> Package python-IPy.noarch 0:0.75-6.el7 will be installed
---> Package setools-libs.x86_64 0:3.3.8-1.1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=====================================================================================================================
 Package                         Arch            Version                             Repository                 Size
=====================================================================================================================
Installing:
 docker-ce                       x86_64          17.03.1.ce-1.el7.centos             docker-ce-stable           19 M
Installing for dependencies:
 audit-libs-python               x86_64          2.6.5-3.el7_3.1                     update                     70 k
 checkpolicy                     x86_64          2.5-4.el7                           base                      290 k
 docker-ce-selinux               noarch          17.03.1.ce-1.el7.centos             docker-ce-stable           28 k
 libcgroup                       x86_64          0.41-11.el7                         base                       65 k
 libseccomp                      x86_64          2.3.1-2.el7                         base                       56 k
 libsemanage-python              x86_64          2.5-5.1.el7_3                       update                    104 k
 policycoreutils-python          x86_64          2.5-11.el7_3                        update                    445 k
 python-IPy                      noarch          0.75-6.el7                          base                       32 k
 setools-libs                    x86_64          3.3.8-1.1.el7                       base                      612 k

Transaction Summary
=====================================================================================================================
Install  1 Package (+9 Dependent packages)

Total download size: 20 M
Installed size: 24 M
Is this ok [y/d/N]: y
Downloading packages:
(1/10): audit-libs-python-2.6.5-3.el7_3.1.x86_64.rpm                                          |  70 kB  00:00:00
(2/10): checkpolicy-2.5-4.el7.x86_64.rpm                                                      | 290 kB  00:00:00
(3/10): libseccomp-2.3.1-2.el7.x86_64.rpm                                                     |  56 kB  00:00:00
(4/10): libcgroup-0.41-11.el7.x86_64.rpm                                                      |  65 kB  00:00:00
(5/10): policycoreutils-python-2.5-11.el7_3.x86_64.rpm                                        | 445 kB  00:00:00
(6/10): setools-libs-3.3.8-1.1.el7.x86_64.rpm                                                 | 612 kB  00:00:00
(7/10): libsemanage-python-2.5-5.1.el7_3.x86_64.rpm                                           | 104 kB  00:00:00
(8/10): python-IPy-0.75-6.el7.noarch.rpm                                                      |  32 kB  00:00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch.rpm is not installed
(9/10): docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch.rpm                                  |  28 kB  00:00:00
(10/10): docker-ce-17.03.1.ce-1.el7.centos.x86_64.rpm                                         |  19 MB  00:00:00
---------------------------------------------------------------------------------------------------------------------
Total                                                                                 23 MB/s |  20 MB  00:00:00
Retrieving key from https://download.docker.com/linux/centos/gpg
Importing GPG key 0x621E9F35:
 Userid     : "Docker Release (CE rpm) <docker@docker.com>"
 Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
 From       : https://download.docker.com/linux/centos/gpg
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : libcgroup-0.41-11.el7.x86_64                                                                     1/10
  Installing : setools-libs-3.3.8-1.1.el7.x86_64                                                                2/10
  Installing : checkpolicy-2.5-4.el7.x86_64                                                                     3/10
  Installing : libsemanage-python-2.5-5.1.el7_3.x86_64                                                          4/10
  Installing : audit-libs-python-2.6.5-3.el7_3.1.x86_64                                                         5/10
  Installing : python-IPy-0.75-6.el7.noarch                                                                     6/10
  Installing : policycoreutils-python-2.5-11.el7_3.x86_64                                                       7/10
  Installing : docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch                                                 8/10
setsebool:  SELinux is disabled.
libsemanage.semanage_direct_install_info: Overriding docker module at lower priority 100 with module at priority 400.
  Installing : libseccomp-2.3.1-2.el7.x86_64                                                                    9/10
  Installing : docker-ce-17.03.1.ce-1.el7.centos.x86_64                                                        10/10
  Verifying  : libseccomp-2.3.1-2.el7.x86_64                                                                    1/10
  Verifying  : python-IPy-0.75-6.el7.noarch                                                                     2/10
  Verifying  : audit-libs-python-2.6.5-3.el7_3.1.x86_64                                                         3/10
  Verifying  : libsemanage-python-2.5-5.1.el7_3.x86_64                                                          4/10
  Verifying  : docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch                                                 5/10
  Verifying  : libcgroup-0.41-11.el7.x86_64                                                                     6/10
  Verifying  : policycoreutils-python-2.5-11.el7_3.x86_64                                                       7/10
  Verifying  : docker-ce-17.03.1.ce-1.el7.centos.x86_64                                                         8/10
  Verifying  : checkpolicy-2.5-4.el7.x86_64                                                                     9/10
  Verifying  : setools-libs-3.3.8-1.1.el7.x86_64                                                               10/10

Installed:
  docker-ce.x86_64 0:17.03.1.ce-1.el7.centos

Dependency Installed:
  audit-libs-python.x86_64 0:2.6.5-3.el7_3.1                    checkpolicy.x86_64 0:2.5-4.el7
  docker-ce-selinux.noarch 0:17.03.1.ce-1.el7.centos            libcgroup.x86_64 0:0.41-11.el7
  libseccomp.x86_64 0:2.3.1-2.el7                               libsemanage-python.x86_64 0:2.5-5.1.el7_3
  policycoreutils-python.x86_64 0:2.5-11.el7_3                  python-IPy.noarch 0:0.75-6.el7
  setools-libs.x86_64 0:3.3.8-1.1.el7

Complete!

启动:

$ sudo systemctl start docker
或者
$ sudo service docker start
service docker start        #启动docker
chkconfig docker on         #加入开机启动

方法2:

安装:

1、Docker要求CentOS系统的内核版本高于 3.10 ,通过 uname -r 命令查看你当前的内核版本是否支持安账docker

2、更新yum包:sudo yum update

3、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

4、设置yum源:sudo yum-config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo

5、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

6、安装docker:sudo yum install docker-ce-17.12.0.ce

7、启动、设置开启开机启动

sudo systemctl start docker

sudo systemctl enable docker

8、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

9、查看docker启动状态:systemctl status docker(如下图即启动成功)

卸载:

1、查询docker安装过的包:

yum list installed | grep docker

2、删除安装包:

yum remove docker-ce.x86_64 ddocker-ce-cli.x86_64 -y

3、删除镜像/容器等

rm -rf /var/lib/docker

 

ue4学习工具搭建docker