1.安装系统
安装系统时如果引导盘路径不对，需要修改
一般插入U盘后，出现如下三行 1. install Centos 7 2. Test This media & install Centos 7 3. Troubleshoooting 此时，tab建 编辑第一个 将会出现以下文字 vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rd.live.check quiet 修改为 vmlinuz initrd=initrd.img linux dd quiet ctrl + x 执行，获得u盘盘符（可能要r命令刷新） 重启 启动命令修改为 vmlinuz initrd=initrd.img inst.stage2=hd:/dev/u盘盘符 quiet ctrl + x 执行，进入系统安装流程
参考：https://blog.csdn.net/qq_38386316/article/details/78733995
2.修改电源模式
配置为合盖关显示器不休眠 vi /etc/systemd/logind.conf HandleLidSwitch=lock 保存，重启服务 systemctl restart systemd-logind
参考https://blog.csdn.net/m0_37710388/article/details/91171853
ubuntu
systemctl restart systemd-logind.service
3.为各个账户添加秘钥
将已有ssh文件夹拷贝到指定位置
4.为普通账户添加切root权限
echo "duser ALL = (root) NOPASSWD:ALL" | tee /etc/sudoers.d/duser chmod 0440 /etc/sudoers.d/duser
5.修改ssh配置文件
vi /etc/ssh/sshd_config PermitRootLogin yes => PermitRootLogin no PasswordAuthentication yes => PasswordAuthentication no Port 22 => Port 20000 #ClientAliveInterval 180 => ClientAliveInterval 180 #ClientAliveCountMax 3 => ClientAliveCountMax 3 保存，重启服务 systemctl restart sshd.service
6.修改静态ip
vi /etc/sysconfig/network-scripts/ifcfg-网卡 BOOTPROTO=static IPV6INIT=no ONBOOT=yes IPADDR=192.168.0.10 PREFIX=24 GATEWAY=192.168.0.1 DNS1=114.114.114.114 保存，重启 systemctl restart network 有时候还要关闭重启无线wifi
ubuntu20
安装ssh
cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system network: version: 2 renderer: NetworkManager ethernets: eno1: dhcp4: no dhcp6: no addresses: [10.23.24.14/23] gateway4: 10.23.24.1 nameservers: addresses: [10.23.24.1,114.114.114.114]
7.(可选) 外网登录
与外网机交换秘钥 yum install -y autossh mkdir -p /data/autossh touch /data/autossh/1.sh echo "nohup autossh -p9999 root@123.123.123.123 -NR 10003:localhost:22 -M 23999 &" > /data/autossh/1.sh cd /data/autossh sh 1.sh
8.添加到系统服务，方便管理(ubuntu20)
cd /etc/systemd/system/ && vim autossh.service
[Unit] Description=Front autossh After=sshd.target [Service] User=root Type=simple ExecStart=/usr/bin/autossh -p9999 root@123.123.123.123 -NR 10003:localhost:22 -M 23999 ExecReload=/bin/kill -HUP $MAINPID KillMode=process Restart=always [Install] WantedBy=multi-user.target
启停autossh
systemctl stop|start|status|enable|disable autossh.service
