Linux 添加用户并赋予权限

Linux 添加用户并赋予权限

添加用户

useradd rsync

添加密码

passwd rsync

ssh 免密设置

client

1. 生成密钥

   ssh-keygen
   Generating public/private rsa key pair.
   Enter file in which to save the key (/root/.ssh/id_rsa):
   Enter passphrase (empty for no passphrase):
   Enter same passphrase again:
   Your identification has been saved in /root/.ssh/id_rsa.
   Your public key has been saved in /root/.ssh/id_rsa.pub.
   The key fingerprint is:
   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
   The key's randomart image is:

2. copy 至服务器端

   ssh-copy-id -i ~/.ssh/id_rsa.pub [e-mail]

3. 无密登录

   ssh rsync@10.254.162.254

sudo 权限

1. root 用户

   visudo

2. 添加配置

   # User privilege specification
   root    ALL=(ALL) ALL
   rsync   ALL=(ALL) ALL

3. 如需无密登录

   # User privilege specification
   root    ALL=(ALL) ALL
   rsync   ALL=(ALL) NOPASSWD: ALL

参考教程

• 如何为 Centos 添加用户并赋予 SSH 权限？
• 3-steps-to-perform-ssh-login-without-password-using-ssh-keygen-ssh-copy-id
• adding-user-and-sudo-rule-in-the-sudoers-file