Centos7安装docker和docker-compose

Centos7安装docker和docker-compose

---

一、安装docker

# 使用yum安装docker
yum -y install docker
# 启动
systemctl start docker.service
# 设置为开机自启动
systemctl enable docker.service

二、配置docker加速镜像

1、docker添加阿里云镜像加速器
https://blog.csdn.net/chenjin_chenjin/article/details/86674521

2、配置阿里云加速器
阿里云会根据账号生成一个账号加速器地址，例如：
https://k9e55i4n.mirror.aliyuncs.com

将加速器地址配置到docker的daemon.json文件中：
# 编辑daemon.json
vim /etc/docker/daemon.json
# 设置加速器地址
{
  "registry-mirrors": ["https://k9e55i4n.mirror.aliyuncs.com"]
}

最后重新加载和重启docker：
systemctl daemon-reload
systemctl restart docker

三、安装docker-compose

#1.首先检查 Linux 有没有安装 python-pip 包
yum install python-pip

#2.没有 python-pip 包就执行
yum install epel-release -y 

#3.执行成功之后，再次执行
yum install python -y

#4.对安装好的 pip 进行升级
pip install --upgrade pip

#5.升级完 pip 工具之后，使用
pip install docker-compose

一般第五步都会报错的

四、解决docker-compose安装报错

• Error1：cryptography 2.8 has requirement cffi!=1.11.3,>=1.8, but you’ll have cffi 1.6.0 which is incompatible.

  # 执行命令
  pip install cffi --user -U
  

• Error2：Cannot uninstall ‘requests’. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

  #执行代码
  pip install --ignore-installed requests
  

• Error3:
  

  #执行代码
  yum -y install python-devel python-subprocess32
  

• Error4: Cannot uninstall ‘subprocess32’. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

  #执行代码
  pip install docker-compose --ignore-installed subprocess32
  

• 安装完毕后，执行以下代码可查看当前的docker-compose版本

  docker-compose version