Linux安装Docker

Centos安装

换源

更换当前服务器的yum镜像源

centos7等已经停止维护的发型版建议在安装Docker之前更换yum源

repo_file=/etc/yum.repos.d/CentOS-Base.repo
cp ${repo_file} ~/CentOS-Base.repo.backup
sudo sed -i s/#baseurl/baseurl/ ${repo_file}
sudo sed -i s/mirrorlist.centos.org/vault.centos.org/ ${repo_file}
sudo sed -i s/mirror.centos.org/vault.centos.org/ ${repo_file}
sudo yum clean all

配置Docker的yum库

安装yum工具

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

配置docker的yum源(阿里云的):

sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
​
sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo

更新yum,建立缓存

sudo yum makecache fast

安装Docker

从yum上直接安装docker

yum install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Ubuntu安装

基础环境

安装必要的一些系统工具;

sudo apt-get update
sudo apt-get install ca-certificates curl gnupg

信任 Docker 的 GPG 公钥

sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

写入软件源信息

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

安装Docker

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

镜像加速

在 /etc/docker/daemon.json 文件夹下添加docker镜像加速源;

# 创建目录
rm -f /etc/docker/daemon.json
​
# 复制内容
tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "http://hub-mirror.c.163.com",
        "https://mirrors.tuna.tsinghua.edu.cn",
        "http://mirrors.sohu.com",
        "https://ustc-edu-cn.mirror.aliyuncs.com",
        "https://ccr.ccs.tencentyun.com",
        "https://docker.m.daocloud.io",
        "https://docker.awsl9527.cn"
    ]
}
EOF
​
# 重新加载配置
systemctl daemon-reload
​
# 重启Docker
systemctl restart docker

卸载Docker

如果你在下载前已经有其他版本的docker,可以凭该指令删除干净;

yum remove docker \
    docker-client \
    docker-client-latest \
    docker-common \
    docker-latest \
    docker-latest-logrotate \
    docker-logrotate \
    docker-engine \
    docker-selinux