本文介绍 Docker CE 简单的安装。
先附上我的安装环境:VMware14+centos7
1.移除旧的版本(如果之前没有安装过,可以跳过这步):
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
2.安装一些必要的系统工具:
yum install -y yum-utils device-mapper-persistent-data lvm2
3.添加软件源信息:
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
4.更新 yum 缓存:
yum makecache fast
5.安装Docker-ce:
yum -y install docker-ce
6.启动Docker后台服务:
systemctl start docker
7.测试运行hello-world
docker run hello-world
执行之后如果出现下面的提示就成功了:
[root@localhost ~]# docker run hello-world
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/
[root@localhost ~]#
下面附上一些常用的Docker命令(下列ID均为CONTAINER ID字段的值,可用Docker ps -a查看):
docker images 查看镜像
docker pull centos:7.5.1804 拉取镜像
docker rmi 【-f 强制删除】 镜像名字:版本 或者镜像ID
docker save -o my_centos_7.5.1804.tar centos:7.5.1804 将镜像保存到哪个文件
docker load --input my_centos_7.5.1804 加载镜像
docker ps 查询所有运行的容器
docker ps -a 查询所有的容器
docker exec -it[开启一个伪终端] ID /bin/bash 进入容器
yum install -y net-tools 安装网络工具,比如可以执行ifconfig
docker create -it centos:7.5.1804 创建容器,跟run区别主要在exit
docker run -it centos:7.5.1804 创建并运行容器,跟create区别主要在exit
docker start ID 启动容器
docker rm ID 删除容器
docker stop ID 停止容器
exit 退出容器(如果是create容器并启动,退出之后可以查看得到正在运行的容器,如果是run则会一并退出,查看不到正在运行的容器)
删除 Docker CE,执行以下命令来删除 Docker CE:
yum remove docker-ce
rm -rf /var/lib/docker
镜像可以去官网上查找: https://www.docker.com/