Linux: SSH-free dense login configuration does not take effect over

Disclaimer: This article is a blogger original article, welcome to reprint, please indicate the source https://blog.csdn.net/mouday/article/details/90754938

1, the normal configuration ssh does not lead to the entry into force

# 配置ssh
ssh-copy-id root@mastar

# 配置完了还让我输入密码，不能忍！
$ ssh root@mastar
root@mastar's password:

2, view system security logs

$ tail -f /var/log/secure

# 发现一个问题，目录的属主和权限配置不当
Authentication refused: bad ownership or modes for directory /root

SSH does not want the home directory and ~ / .ssh directory has write access to the group

3, modify the permissions

chmod 700 /root
chmod 700 /root/.ssh 
chmod 644 /root/.ssh/authorized_keys

4, successful login

$ ssh root@mastar

Reference
to solve not take effect after the successful SSH login configuration problem-free secret