ssh without no password

最新推荐文章于 2025-07-21 03:03:19 发布

原创最新推荐文章于 2025-07-21 03:03:19 发布 · 1.4k 阅读

1 ·

CC 4.0 BY-SA版权

网络技术专栏收录该内容

8 篇文章

订阅专栏

本文详细介绍了如何使用SSH密钥对从本地主机登录远程主机，并解决由于权限设置不当导致的登录问题。通过修改远程主机上的文件权限，确保SSH密钥对认证成功。

If you want to login remote host B from local host A in background without password:

use

1)ssh-keygen -t rsa in local host A

2) cat $HOME/.ssh/id_rsa.pub | ssh username@B 'cat >> .ssh/authorized_keys && echo "Key uploaded successfully."'

if you have issue like below by: ssh -vvv B

...

debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
usename@B's password:

...

The solution to this issue:

I have found a solution. There was an issue in permissions.

/home/usernameon remote machine was granted all permissions, but for key based auth it can be set to 755

or at least you can't give write privileges to any other user except username itself.