<!doctype html>docker
一、docker安装
1、通过 uname -r 命令查看你当前的内核版本
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$ uname -r
2、使用 root 权限登录 Centos。确保 yum 包更新到最新。
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$ sudo yum update
3、卸载旧版本(如果安装过旧版本的话)
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$ sudo yum remove docker docker-common docker-selinux docker-engine
4、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
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$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
5、设置yum源
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$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
6、可以查看所有仓库中所有docker版本，并选择特定版本安装
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$ sudo yum list docker-ce --showduplicates | sort -r
7、安装docker
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$ sudo yum install docker-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
$ sudo yum install <FQPN> # 例如：sudo yum install docker-ce-17.12.0.ce
8、启动并加入开机启动
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$ sudo systemctl start docker
$ sudo systemctl enable docker
9、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)
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$ docker version
二、docker使用
1、Docker 命令概述
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镜像操作：
build Build an image from a Dockerfile
commit Create a new image from a container's changes
images List images
load Load an image from a tar archive or STDIN
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rmi Remove one or more images
search Search the Docker Hub for images
tag Tag an image into a repository
save Save one or more images to a tar archive (streamed to STDOUT by default)
history 显示某镜像的历史
inspect 获取镜像的详细信息
容器及其中应用的生命周期操作：
create Create a new container （创建一个容器）
kill Kill one or more running containers
inspect Return low-level information on a container, image or task
pause Pause all processes within one or more containers
ps List containers
rm Remove one or more containers （删除一个或者多个容器）
rename Rename a container
restart Restart a container
run Run a command in a new container （创建并启动一个容器）
start Start one or more stopped containers （启动一个处于停止状态的容器）
stats Display a live stream of container(s) resource usage statistics （显示容器实时的资源消耗信息）
stop Stop one or more running containers （停止一个处于运行状态的容器）
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
wait Block until a container stops, then print its exit code
attach Attach to a running container
exec Run a command in a running container
port List port mappings or a specific mapping for the container
logs 获取容器的日志
容器文件系统操作：
cp Copy files/folders between a container and the local filesystem
diff Inspect changes on a container's filesystem
export Export a container's filesystem as a tar archive
import Import the contents from a tarball to create a filesystem image
Docker registry 操作：
login Log in to a Docker registry.
logout Log out from a Docker registry.
Volume 操作
volume Manage Docker volumes
网络操作
network Manage Docker networks
Swarm 相关操作
swarm Manage Docker Swarm
service Manage Docker services
node Manage Docker Swarm nodes
系统操作：
version Show the Docker version information
events Get real time events from the server (持续返回docker 事件)
info Display system-wide information （显示Docker 主机系统范围内的信息）