手动安装docker教程

链接：https://blog.csdn.net/qq_34041723/article/details/126287016

设置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 --default-ulimit nofile=65535:65535
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

ExecStart=/usr/bin/dockerd --default-ulimit nofile=65535:65535

不限制文件描述符大小，否则docker会因为程序有太多句柄导致程序启动失败。