linux 免密码登录 配置

test 为本地linux

 192.168.1.70 为远程linux

[root@test:/home/root]$ssh-keygen

Generating public/private rsa key pair.

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

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/root/.ssh/id_rsa.

Your public key has been saved in /home/root/.ssh/id_rsa.pub.

The key fingerprint is:

44:xx:30:xx:xx:76:4b:3a:82:fc:xx:0b:bf:xx:xx:fb root@test

The key's randomart image is:

+--[ RSA 2048]----+

| +.. |

| + = |

| o + = |

| . . o * . |

| o . = S |

| . o.+ . |

| . +o |

| . +. |

| oE. |

+-----------------+

[root@test:/home/root]$ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.1.70

The authenticity of host '192.168.1.70 (192.168.1.70)' can't be established.

RSA key fingerprint is 36:1f:9f:42:fe:7c:bd:34:5b:b0:06:3a:a2:52:b8:ba.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.1.70' (RSA) to the list of known hosts.

root@192.168.1.70's password:

Permission denied, please try again.

root@192.168.1.70's password:

Now try logging into the machine, with "ssh '192.168.1.70'", and check in:

.ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.

[root@test:/home/root]$