docker教程 安装docker

docker教程 安装

准备工作

1.centos系统
2.yum

开始安装

更新yum

[[email protected] ~]# yum update

中途会有一个或多个确认的提示，输入y（yes首字母）继续。

查找docker

待更新完毕之后，查看docker的列表

[[email protected] ~]# yum list docker 

查询的结果如下：

[[email protected] ~]# yum list docker 
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirror.jdcloud.com
 * extras: mirrors.aliyun.com
 * updates: mirror.jdcloud.com
可安装的软件包
docker.x86_64                                                       2:1.13.1-103.git7f2769b.el7.centos                                                        extras

安装docker

我们根据docker列表选择需要安装的软件包docker.x86_64进行安装

[[email protected] ~]# yum install docker.x86_64 

安装结果如下：

已安装:
  docker.x86_64 2:1.13.1-103.git7f2769b.el7.centos                                                                                                                  

作为依赖被安装:
  PyYAML.x86_64 0:3.10-11.el7                                                            atomic-registries.x86_64 1:1.22.1-29.gitb507039.el7                       
  container-selinux.noarch 2:2.107-3.el7                                                 container-storage-setup.noarch 0:0.11.0-2.git5eaf76c.el7                  
  containers-common.x86_64 1:0.1.37-3.el7.centos                                         docker-client.x86_64 2:1.13.1-103.git7f2769b.el7.centos                   
  docker-common.x86_64 2:1.13.1-103.git7f2769b.el7.centos                                libyaml.x86_64 0:0.1.4-11.el7_0                                           
  oci-register-machine.x86_64 1:0-6.git2b44233.el7                                       oci-systemd-hook.x86_64 1:0.2.0-1.git05e6923.el7_6                        
  oci-umount.x86_64 2:2.5-3.el7                                                          python-pytoml.noarch 0:0.1.14-1.git7dea353.el7                            
  subscription-manager-rhsm-certificates.x86_64 0:1.24.13-3.el7.centos                  

完毕！

启动docker

[[email protected] ~]# systemctl start docker 

查看版本

[[email protected] ~]# docker version

[[email protected] ~]# docker version
Client:
 Version:         1.13.1
 API version:     1.26
 Package version: docker-1.13.1-103.git7f2769b.el7.centos.x86_64
 Go version:      go1.10.3
 Git commit:      7f2769b/1.13.1
 Built:           Sun Sep 15 14:06:47 2019
 OS/Arch:         linux/amd64

Server:
 Version:         1.13.1
 API version:     1.26 (minimum version 1.12)
 Package version: docker-1.13.1-103.git7f2769b.el7.centos.x86_64
 Go version:      go1.10.3
 Git commit:      7f2769b/1.13.1
 Built:           Sun Sep 15 14:06:47 2019
 OS/Arch:         linux/amd64
 Experimental:    false

测试是否可用

[[email protected] ~]# docker run hello-world:latest

[[email protected] ~]# docker run hello-world:latest
Unable to find image 'hello-world:latest' locally
Trying to pull repository docker.io/library/hello-world ... 
latest: Pulling from docker.io/library/hello-world
1b930d010525: Pull complete 
Digest: sha256:c3b4ada4687bbaa170745b3e4dd8ac3f194ca95b2d0518b417fb47e5879d9b5f
Status: Downloaded newer image for docker.io/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.
    (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/

注意事项