Linux离线安装Docker

Linux离线安装Docker

查看服务器架构信息

uname -m

下载安装包并传输到指定服务器

• 访问https://download.docker.com/linux/static/stable/ 下载对应服务器架构下的压缩包，架构目录下有对应的docker版本

解压并拷贝命令

# 解压安装包
tar -zxvf docker-aarch64-24.0.5.tgz

# 将解压出来的docker文件复制到 /usr/bin/ 目录下
cp docker/* /usr/bin/

配置systemd服务

• 由于不同的系统，服务管理器的方式和工具不一样，请各位自行查询一下自己的系统对应服务管理器该如何配置
• centos7和openeuler: systemd

1. 创建并修改docker.service文件/usr/lib/systemd/system/docker.service

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target
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 --selinux-enabled=false
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

2. 设置权限

chmod 777 /usr/lib/systemd/system/docker.service

3. 重新加载配置文件（每次有修改docker.service文件时都要重新加载下）

systemctl daemon-reload

4. /usr/lib/systemd/system/和/etc/systemd/system/区别和联系

具体区别联系可参考：https://www.cnblogs.com/TonvyLeeBlogs/articles/13762400.html

• 正常情况下通过daemon-reload，两个目录下的service都会被重载
• etc和usr如果有重名的service，则etc的service会覆盖usr下的service，因为etc的service优先级要高
• 系统每次启动都会读取etc下的service，所以当你执行systemctl enable的时候，安装在usr下的service会被ln -s到/etc/systemd/system/multi-user.target.wants/下

配置docker数据目录

没有特殊需求的话，可以跳过这一步；当然也可以修改，下面是修改docker数据目录的方式

1. 默认docker镜像下载目录为/var/lib/docker，我们可以修改为其他目录，比如/data/docker

mkdir /data/docker

2. 修改docker配置文件/etc/docker/daemon.json

{
  "data-root": "/data/docker"
}

3. 启动docker服务

systemctl start docker

启停docker服务

1. 启动docker服务

systemctl start docker

2. 设置开机启动

systemctl enable docker.service

3. 查看docker状态

systemctl status docker

4. 验证

systemctl status docker