linux 之间设置无密码登录

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A ssh B主机

A主机无密码登录B主机，假设B主机ip为：173.192.41.2

在A主机下面执行

cd ~ssh-keygen -d

一路回车，执行输出如下

Generating public/private dsa key pair.Enter file in which to save the key (/home/TSP/.ssh/id_dsa):Enter passphrase (empty for no passphrase):Enter same passphrase again:Your identification has been saved in /home/TSP/.ssh/id_dsa.Your public key has been saved in /home/TSP/.ssh/id_dsa.pub.The key fingerprint is:61:23:a4:22:8c:af:37:d9:9d:c8:c5:6e:e6:54:eb:a5 TSP@tsp-rls-webservice01The key's randomart image is:+--[ DSA 1024]----+|      .          ||o    o           ||o.. . . +        || o . . o o       ||  .   o S        || . + = o .       ||. + + B . .      || . . = . o       ||      . E        |+-----------------+

ls ~/.ssh

id_dsa id_dsa.pub

sh-copy-id -i ~/.ssh/id_dsa.pub 173.192.41.2

The authenticity of host '192.168.30.202 (192.168.30.202)' can't be established.RSA key fingerprint is 69:f8:f9:5a:3a:c7:7e:f2:ad:f3:85:79:43:41:99:3d.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added '192.168.30.202' (RSA) to the list of known hosts.TSP@192.168.30.202's password:Now try logging into the machine, with "ssh '192.168.30.202'", and check in:  .ssh/authorized_keysto make sure we haven't added extra keys that you weren't expecting.

注意：中间过程，需要输入服务端的用户密码
根据上述提示，在客户端使用ssh命令登陆服务端：

如果找不到命令，可以通过scp

scp id_dsa.pub 67.198.146.226:~/.ssh/authorized_keys

ssh 173.192.41.2

执行后可以无密码登录到远程linux

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