02. Docker安装

# 配置主机名和网络 - docker1
# 配置两台虚拟机的网卡
# docker1机器
# docker1 > /etc/hostname
# hostname docker1
# systemctl restart network

# 配置主机名和网络 - docker2
# docker2机器
# docker2 > /etc/hostname 
# hostname docker2
# systemctl restart network

# 配置 SSH 免密登录
# 做免密
# docker1
# ssh-keygen -t rsa
# ssh-copy-id -i /root/.ssh/id_rsa.pub 192.168.76.129
# ssh 192.168.76.129  /不用密码登陆上去说明成功
# exit

# docker2
# ssh-keygen -t rsa
# ssh-copy-id -i /root/.ssh/id_rsa.pub 192.168.76.128
# ssh 192.168.76.128   /不用密码登陆上去说明成功
# exit

# 配置 Docker CE 源
# wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo

# 配置阿里云源
# vim /etc/yum.repos.d/aliyun.repo
[aliyun]
name=aliyun
baseurl=https://mirrors.aliyun.com/centos/7/os/x86_64/
gpgcheck=0
enabled=1

# 配置 Docker 稳定版源
# vim /etc/yum.repos.d/docker.repo
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/stable
enabled=1
gpgcheck=0
gpgkey=https://download.docker.com/linux/centos/gpg

# 同步配置到其他节点
scp /etc/yum.repos.d/docker* 192.168.76.129:/etc/yum.repos.d/

# 更新 YUM 缓存
yum makecache

# 安装依赖包
wget ftp://mirror.switch.ch/pool/4/mirror/scientificlinux/7x/external_products/extras/x86_64/container-selinux-2.9-4.el7.noarch.rpm

# 安装 Docker CE
yum -y install docker-ce

# 启动 Docker 服务
systemctl start docker
systemctl enable docker

# 验证安装
docker version
docker info

# 拉取镜像
docker pull <镜像名>[:标签]

# 查看镜像
docker images

# 查看镜像历史
docker history <镜像名>

# 导出导入镜像
docker save <镜像名>[:标签] > <文件名>.tar
docker load < <文件名>.tar

# 删除镜像
docker rmi <镜像名>