密钥登录vps

on 2025-10-20

1. 生成密钥

ssh-keygen -t ed25519 -C "gen2" -f ~/.ssh/id_ed25519_gen2

2. 密钥上传到vps

mkdir -p ~/.ssh
chmod 700 ~/.ssh
touch ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

//或者通过命令上传
ssh-copy-id -p 11017 -i ~/.ssh/id_ed25519_gen2.pub maxchan@ip

3. 测试密钥登录

ssh -i ~/.ssh/id_ed25519_gen2 root@你的VPSIP

4. 删除密码登录

vim /etc/ssh/sshd_config

PasswordAuthentication no
PubkeyAuthentication yes

5.重启ssh服务

sudo systemctl restart ssh