配置ssh免密登录

win上的ssh也是在~/.ssh目录。

文章目录

生成ssh**

参考
Note:过程中使用phase是有必要的。否则的话会生成相同的id_rsa.pub

ssh-****** -t rsa

ssh config

code ~/.ssh/config

如下图配置。配置了好了之后可以直接ssh ubuntu进行登录。

Host ubuntu
    User kyle
    HostName 192.168.1.105
    Port 2222

设置ssh免密登录

ssh-copy-id [email protected]

说明：
ssh-copy-id 使用的前提是client, 已经有了.ssh以及在其内的非对称加密的公钥和私钥。如果没有的话，参考具体原理介绍中的做法。

可能会出现ssh-copy-id成功【成功是指将客户端的公钥~/.ssh/id_rsa.pub中的公钥拷贝到服务器~/.ssh/authorized_keys中】。但是无法免密登录的情况。检查/home/kyle文件的权限是不是755, 即drwxr-xr-x。如果不是 sudo chmod 0755 /home/kyle。 是的，不用使用-R参数。 所以直接将id_rsa.pub中的内容拷贝到authorized_keys也是可以实现免密登录的。

登出ssh

exit

具体原理介绍

SETTING UP PUBLIC KEY AUTHENTICATION FOR SSH
The following simple steps are required to set up public key authentication (for SSH):

Key pair is created (typically by the user). This is typically done with ssh-******.
Private key stays with the user (and only there), while the public key is sent to the server. Typically with the ssh-copy-id utility.
Server stores the public key (and marks it as authorized).
Server will now allow access to anyone who can prove they have the corresponding private key.