每天一个linux命令--ssh的host配置用户名密码

时间：2022-05-17 04:44:51

1、在终端输入 cd ~/.ssh/

vi config

输入服务器的用户名和密码

souche@kickseed:~/.ssh$ cat config

# 这是跳板机的配置，给跳板机的 IP 起个别名: jump_machine, 用户名: owen

Host feature

   HostName .III.III.III

   User XXX

2、生成 rsa 公钥和私钥: ssh-keygen -t rsa

tip：如果ssh的目录下面已经有公钥，就不用生成了

souche@kickseed:~/.ssh$ ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/home/souche/.ssh/id_rsa): 1HyKxJHtKz

1HyKxJHtKz already exists.

Overwrite (y/n)? y

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in 1HyKxJHtKz.

Your public key has been saved in 1HyKxJHtKz.pub.

The key fingerprint is:

SHA256:PRQmfxrHWuWM5QgqTwd3OIsD8gPq70mf8JCzerVPzw8 souche@kickseed

The key's randomart image is:

+---[RSA ]----+

|        o =.. o  |

|    o .  Bo= O   |

|   . +..o.=oB +  |

|  .   o+o+.B     |

| .     .S.=      |

|  .  ..    .     |

|   .*. .. E      |

|   .oO.o o .     |

|  .++ +.. o..    |

+----[SHA256]-----+

souche@kickseed:~/.ssh$

3、 ssh-copy-id -i    密钥文件   用户别名@服务器别名

souche@kickseed:~/.ssh$ ssh-copy-id -i id_rsa.pub  souche@feature

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"

/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

/usr/bin/ssh-copy-id: INFO:  key(s) remain to be installed -- if you are prompted now it is to install the new keys

souche@172.17.41.58's password: 

Number of key(s) added: 

Now try logging into the machine, with:   "ssh 'souche@feature'"

and check to make sure that only the key(s) you wanted were added.

souche@kickseed:~/.ssh$ ssh-copy-id -i id_rsa.pub  souche@eva

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