Linux 在线离线安装 Docker
一、在线安装
(一) 安装 docker
1. 更新 yum 源
yum update
yum install -y yum-utils
2. 安装 docker
yum install -y docker
(二) 安装 docker-compose
1. 添加 docker 的 yum 镜像源
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
2. 安装 docker-compose
yum -y install docker-compose-plugin
二、离线安装
(一) 安装 docker
1. 下载 Docker 安装包
https://download.docker.com/linux/static/stable/x86_64/
2. 解压安装包
tar -xvf docker-27.1.0.tgz
mv docker/* /usr/bin/
3. 将 docker 注册为 service 服务
vim /etc/systemd/system/docker.service
docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# ExecStart=/usr/bin/dockerd
ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
4. 启动docker
chmod +x /etc/systemd/system/docker.service
systemctl daemon-reload
systemctl start docker
5. 查看版本号
systemctl status docker
docker -v
6. 设置开机自启
systemctl enable docker.service
(二) 镜像保存和加载
1. 保存镜像
docker save -o 镜像保存的名字和位置 镜像名:TAG
docker save -o nginx.tar nginx:latest
2. 加载镜像
docker load -i 镜像保存的名字和位置
docker load -i nginx.tar
(三) 安装 docker-compose
1. 下载并上传文件
https://github.com/docker/compose/releases/download/v2.27.1/docker-compose-linux-x86_64
上传 docker-compose 文件到 /usr/local/bin/docker-compose
2. 修改权限
chmod +x /usr/local/bin/docker-compose
3. 创建软连接
ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
4. 查看版本
docker-compose --version
