安装
[root@localhost ~]# curl -sSL https://get.daocloud.io/docker | sh
运行
[root@localhost ~]# which docker
/usr/bin/docker
[root@localhost ~]# docker version
Client:
Version: 18.06.0-ce
API version: 1.38
Go version: go1.10.3
Git commit: 0ffa825
Built: Wed Jul 18 19:08:18 2018
OS/Arch: linux/amd64
Experimental: false
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
[root@localhost ~]# systemctl start docker
查看状态
[root@localhost ~]# docker version
Client:
Version: 18.06.0-ce
API version: 1.38
Go version: go1.10.3
Git commit: 0ffa825
Built: Wed Jul 18 19:08:18 2018
OS/Arch: linux/amd64
Experimental: false
Server:
Engine:
Version: 18.06.0-ce
API version: 1.38 (minimum version 1.12)
Go version: go1.10.3
Git commit: 0ffa825
Built: Wed Jul 18 19:10:42 2018
OS/Arch: linux/amd64
Experimental: false
3 查看帮助
docker help
4 查看本地仓库的镜像
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
5 在DockerHub 上搜索共享镜像
[root@localhost ~]# docker search centos7
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
ansible/centos7-ansible Ansible on Centos7 114 [OK]
centos/mysql-57-centos7 MySQL 5.7 SQL database server 35
openshift/base-centos7 A Centos7 derived base image for Source-To-I… 29
(省略)
6 拉取共享镜像
在拉取前需要更改/etc/docker/daemon.json(国内访问dockerhub速度你懂得,在这里使用了ustc的镜像加速)
[root@ca8bd201ee4b ansible]# yum -y install iproute
Loaded plugins: fastestmirror, ovl
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
base | 3.6 kB 00:00:00
epel/x86_64/metalink | 5.8 kB 00:00:00
epel | 3.2 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/7): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/7): epel/x86_64/group_gz | 88 kB 00:00:00
(3/7): extras/7/x86_64/primary_db | 172 kB 00:00:00
(4/7): epel/x86_64/updateinfo | 930 kB 00:00:01
(5/7): epel/x86_64/primary | 3.6 MB 00:00:01
(6/7): base/7/x86_64/primary_db | 5.9 MB 00:00:02
(7/7): updates/7/x86_64/primary_db
(省略)
[root@ca8bd201ee4b ansible]# ip a
1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
24: eth0@if25: mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
看着和在宿主机上没有区别?
从docker里面可以直接进入物理机
[root@ca8bd201ee4b ansible]# ssh 192.168.10.138
The authenticity of host '192.168.10.138 (192.168.10.138)' can't be established.
ECDSA key fingerprint is 0c:23:1d:1b:c7:95:e8:18:b4:4c:6d:de:98:03:9e:6e.
Are you sure you want to continue connecting (yes/no)?
2.离开容器(ctrl+p+q)
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ca8bd201ee4b ansible/centos7-ansible "/bin/bash" 2 hours ago Up 2 hours ws
容器ID 使用镜像 执行命令 创建时间 名字
退出容器
[root@ca8bd201ee4b ansible]# exit
exit
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
退出容器后,docker ps 已经看不到,使用-a参数
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ca8bd201ee4b ansible/centos7-ansible "/bin/bash" 2 hours ago Exited (255) About a minute ago ws
启动一个退出的容器
[root@localhost ~]# docker start ws
ws
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ca8bd201ee4b ansible/centos7-ansible "/bin/bash" 2 hours ago Up 6 seconds ws
6 使用宿主机停止容器
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ca8bd201ee4b ansible/centos7-ansible "/bin/bash" 2 hours ago Up About a minute ws
[root@localhost ~]# docker stop ws
ws
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
删除容器(先停止再删除)
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ca8bd201ee4b ansible/centos7-ansible "/bin/bash" 2 hours ago Exited (137) 46 seconds ago ws
[root@localhost ~]# docker rm ca8bd201ee4b
ca8bd201ee4b