CentOS上离线安装Docker

1. 下载安装包

https://download.docker.com/linux/static/stable/
eg: https://download.docker.com/linux/static/stable/x86_64/docker-20.10.9.tgz

2. 解压 / 移动

tar -zvxf docker-20.10.9.tgz
cp docker/* /usr/bin/

3. 注册服务

新建 docker.service 文件

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
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

将 docker.service 拷贝到

cp docker.service /usr/lib/systemd/system/

4. 启动 、验证

systemctl start docker
docker -v
docker --help

5. docker 导入导出镜像

导出镜像 (-o输出到文件)

docker save -o myapp.tar imageName

导入镜像

docker load -i myapp.tar

6. 开机自启

systemctl enable docker

7. 下载docker compose离线包

https://github.com/docker/compose/releases

下载docker-compose
eg: https://github.com/docker/compose/releases/download/v2.1.1/docker-compose-linux-x86_64

sudo mv docker-compose-linux-x86_64 /usr/local/bin/docker-compose
sudo chmod u+x /usr/local/bin/docker-compose

验证

docker-compose -v