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1.檢查并安裝pssh，yum list pssh
2.因為沒有配置免秘鑰登陸，pssh命令執行失敗。
[root@bogon ]# pssh -H root@192.168.245.129 -i uptime [1] 11:00:36 [FAILURE] root@192.168.245.129 Exited with error code 255 Stderr: The authenticity of host '192.168.245.129 (192.168.245.129)' can't be established. RSA key fingerprint is 84:2d:70:33:1c:45:fa:e6:4b:94:72:7e:10:98:7c:a8. Are you sure you want to continue connecting (yes/no)? Host key verification failed.
3.生成秘鑰。
[root@bogon tmp]# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: 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: 9e:14:9a:cc:8d:9b:fd:51:c5:68:24:e1:ce:c6:d7:33 root@bogon The key's randomart image is: +--[ RSA 2048]----+ | o.. | | . o o | | . . o o | | o = = . o | | * S = o E | | * o o o | | o + . | | . . | | . | +-----------------+
[root@bogon .ssh]# ll total 8 -rw------- 1 root root 1675 Aug 22 11:06 id_rsa -rw-r--r-- 1 root root 392 Aug 22 11:06 id_rsa.pub
4.拷貝到被管對象。
[root@bogon .ssh]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.245.129 The authenticity of host '192.168.245.129 (192.168.245.129)' can't be established. RSA key fingerprint is 84:2d:70:33:1c:45:fa:e6:4b:94:72:7e:10:98:7c:a8. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.245.129' (RSA) to the list of known hosts. reverse mapping checking getaddrinfo for bogon [192.168.245.129] failed - POSSIBLE BREAK-IN ATTEMPT! root@192.168.245.129's password: Now try logging into the machine, with "ssh 'root@192.168.245.129'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting.
5.pssh命令執行成功。
[root@bogon .ssh]# pssh -H root@192.168.245.129 -i uptime [1] 11:10:39 [SUCCESS] root@192.168.245.129 20:10:39 up 2:07, 1 user, load average: 0.00, 0.00, 0.00
總結
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