$ 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
