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Centos 7下Docker的安装与非root配置

1. CentOS 7下docker的安装

# 1. install yum-utils
$ sudo yum install -y yum-utils
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

# 2. set up the stable repository
$sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
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

# 3. install docker
$ sudo yum install docker-ce
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!

# 4. start docker
$ sudo systemctl start docker

# 5. verify docker
$ sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
78445dd45222: Pull complete
Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7
Status: Downloaded newer image for hello-world:latest

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.
 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://cloud.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide/

2. docker非root配置

# 查看是否存在docker用户组
$ cat /etc/group | grep docker

# 如果不存在docker用户组,则创建
$ sudo groupadd docker

# 添加当前用户到docker组中
$ sudo gpasswd -a ${USER} docker

# 重启docker
$ sudo systemctl restart docker      

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