ubuntu 安装docker

更新源

\# apt-get update

安装 docker

\# apt-get install -y docker.io

\# docker version
Client:
 Version:      1.12.6
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   78d1802
 Built:        Tue Jan 31 23:35:14 2017
 OS/Arch:      linux/amd64
Cannot connect to the Docker daemon. Is the docker daemon running on this host?

启动docker

\# service docker start

\# docker version
Client:
 Version:      1.12.6
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   78d1802
 Built:        Tue Jan 31 23:35:14 2017
 OS/Arch:      linux/amd64

Server:
 Version:      1.12.6
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   78d1802
 Built:        Tue Jan 31 23:35:14 2017
 OS/Arch:      linux/amd64

查看docker状态

\# service docker status                                              1 ↵
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: e
   Active: active (running) since 三 2017-05-10 15:06:48 CST; 4min 15s ago
     Docs: https://docs.docker.com
 Main PID: 4235 (dockerd)
    Tasks: 28
   Memory: 21.4M
      CPU: 494ms
   CGroup: /system.slice/docker.service
           ├─4235 /usr/bin/dockerd -H fd://
           └─4243 containerd -l unix:///var/run/docker/libcontainerd/docker-cont
   ...

拉取镜像 hello-world

\# docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
78445dd45222: Pull complete
Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7
Status: Downloaded newer image for hello-world:latest

\# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
hello-world         latest              48b5124b2768        3 months ago        1.84 kB

拉取 官方 nginx 镜像

国内建议使用 网易蜂巢 的镜像.

\# docker pull hub.c.163.com/library/nginx:latest                     1 ↵
latest: Pulling from library/nginx

5de4b4d551f8: Pull complete
d4b36a5e9443: Pull complete
0af1f0713557: Pull complete
Digest: sha256:f84932f738583e0169f94af9b2d5201be2dbacc1578de73b09a6dfaaa07801d6
Status: Downloaded newer image for hub.c.163.com/library/nginx:latest

运行镜像

参数-d 表示后台运行一个镜像

\# docker run -d hub.c.163.com/library/nginx:latest
a1c8d69586a32c30d695c8cea4f7195c52e02c67f32293559a67a09edfbb6002

可以通过docker ps查看 运行的镜像.

\# docker ps
CONTAINER ID        IMAGE                                COMMAND                  CREATED             STATUS              PORTS               NAMES
a1c8d69586a3        hub.c.163.com/library/nginx:latest   "nginx -g 'daemon off"   11 seconds ago      Up 8 seconds        80/tcp              distracted_leakey

前台运行, 使用 docker run hub.c.163.com/library/nginx:latest 命令.

进入镜像操作

\# docker exec -it a1 bash                                            1 ↵
root@a1c8d69586a3:/\# ls
bin   dev  home  lib32    libx32    mnt  proc  run     srv  tmp  var
boot  etc  lib     lib64    media    opt  root  sbin  sys  usr
root@a1c8d69586a3:/\# exit
exit

a1表示 镜像的ID

连接网络 ^2

端口映射

\# docker run -d -p 8080:80 hub.c.163.com/library/nginx

使用-P可以映射所有端口, 命令: docker run -d -P hub.c.163.com/library/nginx

查看端口是否监听

$ netstat -na | grep 8080
tcp6       0      0 :::8080                 :::*                    LISTEN

在浏览器中直接输入http://localhost:8080/查看.

关闭容器

# docker stop a1

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参考文档

• linux安装docker
• 网易蜂巢 镜像中心
• ngnix 搜索结果
• Ubuntu输入su提示认证失败的解决方法
• docker网络