• CentOS版本：7.9
• docker版本：18.06.3

前言

說是離線安裝，還是要先線上下載安裝包。docker官網提供離線安裝的二進位制包。

步驟

1. 官網下載安裝包。連結：https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz
2. 解壓安裝包，將安裝包內的二進位制程式挪到/usr/local/bin目錄。
3. 建立docker資料存放目錄：mkdir -p /home/data/docker
4. 建立docker服務檔案：vim /usr/lib/systemd/system/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
# 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/local/bin/dockerd --data-root /home/data/docker

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
 

5. 配置生效：

systemctl daemon-reload
systemctl start docker
systemctl enable docker