JAVA高级面试进阶训练营视频教程

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使用yum install openssh-clients  安装命令

有的系统没有此命令 有的系统缺省 就包含这一条命令！

但是我的测试机没有发现此命令 只能这样安装！

这时有报错了

1 2	[root@ceshi . ssh ] # ssh-copy-id -i ./id_rsa root@192.168.0.20 ssh : Could not resolve  hostname  . /id_rsa : Name or service not known

这是因为没有解析主机名

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[root@puttet ~] # hostname abc [root@ceshi . ssh ] # vi /etc/hosts 127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.0.19 ceshi 192.168.0.20 abc [root@ceshi . ssh ] # ping abc PING abc (192.168.0.20) 56(84) bytes of data. 64 bytes from abc (192.168.0.20): icmp_seq=1 ttl=64  time =0.322 ms 64 bytes from abc (192.168.0.20): icmp_seq=2 ttl=64  time =0.270 ms ^C --- abc  ping  statistics --- 2 packets transmitted, 2 received, 0% packet loss,  time  1300ms rtt min /avg/max/mdev  = 0.270 /0 .296 /0 .322 /0 .026 ms

 

这样就可以了

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[root@ceshi . ssh ] # ssh-copy-id -i ./id_rsa.pub  root@192.168.0.20 The authenticity of host  '192.168.0.20 (192.168.0.20)'  can't be established. RSA key fingerprint is 7b:a4:ae:42:50:8b:27:82:1c: dc :66:a9:5a:cb:67:a2. Are you sure you want to  continue  connecting ( yes /no )?  yes Warning: Permanently added  '192.168.0.20'  (RSA) to the list of known hosts. root@192.168.0.20's password: Now try logging into the machine, with  "ssh 'root@192.168.0.20'" , and check  in :    . ssh /authorized_keys to  make  sure we haven 't added extra keys that you weren' t expecting.

ok 可以使用了！

1	[root@puttet ~] # cd .ssh/authorized_keys