Centos7安装Docker

Centos7安装Docker

• • • 一、环境
    • 二、互联网环境
    • • 2.1 环境配置
      • 2.2 安装docker
    • 三、无互联网环境
    • • 3.1 环境配置
      • 3.2 安装docker和docker-compose

一、环境

二、互联网环境

• 点我跳转至无互联网环境

2.1 环境配置

# 备份镜像源
mkdir -p /etc/yum.repos.d/bak
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak/
# 下载repo
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
# 更新镜像源
yum makecache
# 修改chrony配置文件指定NTP源为阿里 腾讯NTP
sed -r -i 's?^server 0.+iburst?server ntp.aliyun.com?' /etc/chrony.conf
sed -r -i 's?^server 1.+iburst?server ntp1.aliyun.com?' /etc/chrony.conf
sed -r -i 's?^server 2.+iburst?server time1.cloud.tencent.com?' /etc/chrony.conf
sed -r -i 's?^server 3.+iburst?server time2.cloud.tencent.com?' /etc/chrony.conf
# 重启chrony服务
systemctl restart chronyd
# 开机自动启动chrony服务
systemctl enable chronyd
# 查看时间服务器状态
chronyc sources -v
# 创建docker目录
mkdir -p /etc/docker /opt/docker
# 创建docker配置文件
tee /etc/docker/daemon.json <<-'EOF'
{
  "graph":"/opt/docker",
  "registry-mirrors": [
  "https://hub-mirror.c.163.com",
  "https://docker.mirrors.ustc.edu.cn",
  "https://registry.docker-cn.com"
  ]
}
EOF

2.2 安装docker

# 安装镜像源配置工具
yum install -y yum-utils
# 添加软件源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 安装docker
# 离线安装用户可以在这里执行dnf download --resolve docker-ce docker-ce-cli containerd.io下载所有包
yum install docker-ce docker-ce-cli containerd.io
# 启动docker
systemctl start docker
# docker开机自动启动
systemctl enable docker
# containerd容器开机自动启动
systemctl enable containerd
# 查看docker版本信息
docker info
# 下载docker-compose
curl -L "https://github.com/docker/compose/releases/download/v2.2.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# 给予docker-compose执行权
chmod +x /usr/local/bin/docker-compose
# 查看docker-compose版本信息
docker-compose --version

三、无互联网环境

• 点我跳转至互联网环境

离线文件包docker-20.10.12-centos7-offline.tar.gz

3.1 环境配置

# 创建docker目录
mkdir -p /etc/docker /opt/docker
# 创建docker配置文件
tee /etc/docker/daemon.json <<-'EOF'
{
  "graph":"/opt/docker",
  "registry-mirrors": [
  "https://hub-mirror.c.163.com",
  "https://docker.mirrors.ustc.edu.cn",
  "https://registry.docker-cn.com"
  ]
}
EOF

3.2 安装docker和docker-compose

# 进入opt目录
cd /opt
# 上传离线文件包docker-20.10.12-centos7-offline.tar.gz至/opt目录
# 解压
tar -zxvf docker-20.10.12-centos7-offline.tar.gz
# 进入目录
cd /opt/docker-20.10.12-centos7-offline
# 安装docker
rpm -ivh *.rpm
# 复制docker-compose二进制文件至bin目录
cp /opt/docker-20.10.12-centos7-offline/docker-compose-linux-x86_64 /usr/local/bin/docker-compose
# 给予执行权限
chmod +x /usr/local/bin/docker-compose
# 启动docker
systemctl start docker
# docker开机自动启动
systemctl enable docker
# containerd容器开机自动启动
systemctl enable containerd
# 查看docker版本信息
docker info
# 查看docker-compose版本信息
docker-compose --version