SSH password-free login configuration
| Generate key file locally: $ ssh-keygen output: Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): 直接enter Enter passphrase (empty for no passphrase): Continue to press enter directly Enter same passphrase again: Continue to press enter directly Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: 10:98:86:e7:78:c8:24:87:dc:3a:8a:30:ca:08:4e:8c root@min1 The key's randomart image is: +---[ RSA 2048]----+ |.... the. | |o.+.= . | |o=.* . | |E=+ o . | |@... S | |=o | | | | | | | +-----------------+ The above situation indicates that the key is successfully generated and placed in the root/.ssh/id_rsa file without a password. |
| Copy the key file to the target machine $ ssh-copy-id 192.168.71.10 output: The authenticity of host '192.168.71.10 (192.168.71.10)' can't be established. RSA key fingerprint is fa:a9:1b:a8:d3:f8:4b:39:23:c6:4b:e6:21:c1:df:99. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.71.10' (RSA) to the list of known hosts. [email protected]'s password: 输入目标机192.168.71.10密码 Now try logging into the machine, with "ssh '192.168.71.10'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting. 至此表示拷贝成功了，输出说可以尝试登陆了。 |
| 登陆测试 [root@min1 ~]$ ssh 192.168.71.10 Last login: Wed Nov 22 00:58:34 2017 from 192.168.71.1 [root@min2 ~]$ ^C 这样就可以远程运行脚本及操作各种指令了。 |