CentOS Docker安装

Docker 支持以下的 64 位 CentOS 版本：

  • CentOS 7
  • CentOS 8
  • 更高版本…

CentOS使用YUM安装必须启用CentOS自带YUM源centos-extras，默认情况下，此仓库是启用的，但是如果已禁用它，则需要启用centos-extras启用方法

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 。

内核

通过 uname -r 命令查看你当前的内核版本。

  1. [root@jk-lx-dev-app01 ~]# uname -r
  2. 3.10.0-1062.1.2.el7.x86_64

YUM更新

使用 root 权限登录 Centos。确保 yum 包更新到最新，最好换成国内源，否则速度太慢。

  1. [root@jk-lx-dev-app01 ~]# yum update

卸载老旧版本

较旧的 Docker 版本称为 docker 或 docker-engine 。如果已安装这些程序，请卸载它们以及相关的依赖项。

  1. [root@jk-lx-dev-app01 ~]# yum remove docker  docker-common docker-selinux docker-engine

依赖

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

  1. [root@jk-lx-dev-app01 ~]# yum install -y yum-utils device-mapper-persistent-data lvm2

设置docker yum源

  1. [root@jk-lx-dev-app01 ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
  2. [root@jk-lx-dev-app01 ~]# yum makecache fast   //更新源缓存
  3. Loaded plugins: fastestmirror
  4. Loading mirror speeds from cached hostfile
  5. base                                             | 3.6 kB  00:00:00     
  6. docker-ce-stable                                 | 3.5 kB  00:00:00     
  7. epel                                             | 5.3 kB  00:00:00     
  8. extras                                           | 2.9 kB  00:00:00     
  9. gitlab-ce                                        | 2.9 kB  00:00:00     
  10. updates                                          | 2.9 kB  00:00:00     
  11. (1/2): docker-ce-stable/x86_64/updateinfo        |   55 B  00:00:00     
  12. (2/2): docker-ce-stable/x86_64/primary_db        |  37 kB  00:00:00     
  13. Metadata Cache Created

查看可安装版本

可以查看所有仓库中所有docker版本，并选择特定版本安装

  1. [root@jk-lx-dev-app01 ~]# yum list docker-ce --showduplicates | sort -r
  2. Loading mirror speeds from cached hostfile
  3. Loaded plugins: fastestmirror
  4. docker-ce.x86_64            3:19.03.5-3.el7                     docker-ce-stable
  5. docker-ce.x86_64            3:19.03.4-3.el7                     docker-ce-stable
  6. docker-ce.x86_64            3:19.03.3-3.el7                     docker-ce-stable
  7. docker-ce.x86_64            3:19.03.2-3.el7                     docker-ce-stable
  8. docker-ce.x86_64            3:19.03.1-3.el7                     docker-ce-stable
  9. docker-ce.x86_64            3:19.03.0-3.el7                     docker-ce-stable
  10. docker-ce.x86_64            3:18.09.9-3.el7                     docker-ce-stable
  11. docker-ce.x86_64            3:18.09.8-3.el7                     docker-ce-stable
  12. docker-ce.x86_64            3:18.09.7-3.el7                     docker-ce-stable
  13. docker-ce.x86_64            3:18.09.6-3.el7                     docker-ce-stable
  14. docker-ce.x86_64            3:18.09.5-3.el7                     docker-ce-stable
  15. docker-ce.x86_64            3:18.09.4-3.el7                     docker-ce-stable
  16. docker-ce.x86_64            3:18.09.3-3.el7                     docker-ce-stable
  17. docker-ce.x86_64            3:18.09.2-3.el7                     docker-ce-stable
  18. docker-ce.x86_64            3:18.09.1-3.el7                     docker-ce-stable
  19. docker-ce.x86_64            3:18.09.0-3.el7                     docker-ce-stable
  20. docker-ce.x86_64            18.06.3.ce-3.el7                    docker-ce-stable
  21. docker-ce.x86_64            18.06.2.ce-3.el7                    docker-ce-stable
  22. docker-ce.x86_64            18.06.1.ce-3.el7                    docker-ce-stable
  23. docker-ce.x86_64            18.06.0.ce-3.el7                    docker-ce-stable
  24. docker-ce.x86_64            18.03.1.ce-1.el7.centos             docker-ce-stable
  25. docker-ce.x86_64            18.03.0.ce-1.el7.centos             docker-ce-stable
  26. docker-ce.x86_64            17.12.1.ce-1.el7.centos             docker-ce-stable
  27. docker-ce.x86_64            17.12.0.ce-1.el7.centos             docker-ce-stable
  28. docker-ce.x86_64            17.09.1.ce-1.el7.centos             docker-ce-stable
  29. docker-ce.x86_64            17.09.0.ce-1.el7.centos             docker-ce-stable
  30. docker-ce.x86_64            17.06.2.ce-1.el7.centos             docker-ce-stable
  31. docker-ce.x86_64            17.06.1.ce-1.el7.centos             docker-ce-stable
  32. docker-ce.x86_64            17.06.0.ce-1.el7.centos             docker-ce-stable
  33. docker-ce.x86_64            17.03.3.ce-1.el7                    docker-ce-stable
  34. docker-ce.x86_64            17.03.2.ce-1.el7.centos             docker-ce-stable
  35. docker-ce.x86_64            17.03.1.ce-1.el7.centos             docker-ce-stable
  36. docker-ce.x86_64            17.03.0.ce-1.el7.centos             docker-ce-stable
  37. Available Packages

安装

  1. yum install docker-ce-17.12.0.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17.12.0
  2. 或者 yum -y install docker-ce
  1. [root@jk-lx-dev-app01 ~]# yum -y install docker-ce
  2. Loaded plugins: fastestmirror
  3. Loading mirror speeds from cached hostfile
  4. Resolving Dependencies
  5. --> Running transaction check
  6. ---> Package docker-ce.x86_64 3:19.03.5-3.el7 will be installed
  7. --> Processing Dependency: container-selinux >= 2:2.74 for package: 3:docker-ce-19.03.5-3.el7.x86_64
  8. --> Processing Dependency: containerd.io >= 1.2.2-3 for package: 3:docker-ce-19.03.5-3.el7.x86_64
  9. --> Processing Dependency: docker-ce-cli for package: 3:docker-ce-19.03.5-3.el7.x86_64
  10. --> Running transaction check
  11. ---> Package container-selinux.noarch 2:2.107-3.el7 will be installed
  12. ---> Package containerd.io.x86_64 0:1.2.10-3.2.el7 will be installed
  13. ---> Package docker-ce-cli.x86_64 1:19.03.5-3.el7 will be installed
  14. --> Finished Dependency Resolution
  15. Dependencies Resolved
  16. ===============================================================================================
  17. Package              Arch       Version             Repository                    Size
  18. ===============================================================================================
  19. Installing:
  20. docker-ce            x86_64     3:19.03.5-3.el7     docker-ce-stable              24 M
  21. Installing for dependencies:
  22. container-selinux    noarch     2:2.107-3.el7       extras                        39 k
  23. containerd.io        x86_64     1.2.10-3.2.el7      docker-ce-stable              23 M
  24. docker-ce-cli        x86_64     1:19.03.5-3.el7      docker-ce-stable             39 M
  25. Transaction Summary
  26. ===============================================================================================
  27. Install  1 Package (+3 Dependent packages)
  28. Total download size: 87 M
  29. Installed size: 362 M
  30. Downloading packages:
  31. (1/4): container-selinux-2.107-3.el7.noarch.rpm               |  39 kB  00:00:00     
  32. warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/containerd.io-1.2.10-3.2.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
  33. Public key for containerd.io-1.2.10-3.2.el7.x86_64.rpm is not installed
  34. (2/4): containerd.io-1.2.10-3.2.el7.x86_64.rpm                |  23 MB  00:00:02     
  35. (3/4): docker-ce-19.03.5-3.el7.x86_64.rpm                     |  24 MB  00:00:03     
  36. (4/4): docker-ce-cli-19.03.5-3.el7.x86_64.rpm                 |  39 MB  00:00:04     
  37. -----------------------------------------------------------------------------------------------
  38. Total                                                                                                                     13 MB/s |  87 MB  00:00:06     
  39. Retrieving key from https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
  40. Importing GPG key 0x621E9F35:
  41.  Userid     : "Docker Release (CE rpm) <docker@docker.com>"
  42.  Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
  43.  From       : https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
  44. Running transaction check
  45. Running transaction test
  46. Transaction test succeeded
  47. Running transaction
  48.   Installing : 2:container-selinux-2.107-3.el7.noarch                              1/4 
  49.   Installing : containerd.io-1.2.10-3.2.el7.x86_64                                 2/4 
  50.   Installing : 1:docker-ce-cli-19.03.5-3.el7.x86_64                                3/4 
  51.   Installing : 3:docker-ce-19.03.5-3.el7.x86_64                                    4/4 
  52.   Verifying  : containerd.io-1.2.10-3.2.el7.x86_64                                 1/4 
  53.   Verifying  : 1:docker-ce-cli-19.03.5-3.el7.x86_64                                2/4 
  54.   Verifying  : 2:container-selinux-2.107-3.el7.noarch                              3/4 
  55.   Verifying  : 3:docker-ce-19.03.5-3.el7.x86_64                                    4/4 
  56. Installed:
  57.   docker-ce.x86_64 3:19.03.5-3.el7                                                                                                                       
  58. Dependency Installed:
  59.   container-selinux.noarch 2:2.107-3.el7             
  60.   containerd.io.x86_64 0:1.2.10-3.2.el7             
  61.   docker-ce-cli.x86_64 1:19.03.5-3.el7            
  62. Complete!

启动并加入开机启动

  1. [root@jk-lx-dev-app01 ~]# systemctl start docker
  2. [root@jk-lx-dev-app01 ~]# systemctl enable docker
  3. Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

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)

  1. [root@jk-lx-dev-app01 ~]# docker version
  2. Client: Docker Engine - Community
  3.  Version:           19.03.5
  4.  API version:       1.40
  5.  Go version:        go1.12.12
  6.  Git commit:        633a0ea
  7.  Built:             Wed Nov 13 07:25:41 2019
  8.  OS/Arch:           linux/amd64
  9.  Experimental:      false
  11. Server: Docker Engine - Community
  12.  Engine:
  13.   Version:          19.03.5
  14.   API version:      1.40 (minimum version 1.12)
  15.   Go version:       go1.12.12
  16.   Git commit:       633a0ea
  17.   Built:            Wed Nov 13 07:24:18 2019
  18.   OS/Arch:          linux/amd64
  19.   Experimental:     false
  20.  containerd:
  21.   Version:          1.2.10
  22.   GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
  23.  runc:
  24.   Version:          1.0.0-rc8+dev
  25.   GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
  26.  docker-init:
  27.   Version:          0.18.0
  28.   GitCommit:        fec3683

卸载

  1. [root@jk-lx-dev-app01 ~]# yum list installed | grep docker
  2. containerd.io.x86_64                  1.2.10-3.2.el7                 @docker-ce-stable
  3. docker-ce.x86_64                      3:19.03.5-3.el7                @docker-ce-stable
  4. docker-ce-cli.x86_64                  1:19.03.5-3.el7                @docker-ce-stable
  5. [root@jk-lx-dev-app01 ~]# yum -y remove docker-ce.x86_64