Debian的/ect/hosts解析的问题，提示unable to resolve host by name。

apzc2529

升级系统后发现两个小问题，想请教一下问题处在哪里了。

(1)  ping、ssh命令均可以解析计算机名lnm2312，而scp却无法解析计算机名，提示ssh: Could not resolve hostname lnm2312: Invalid argument。

1. cunzhang@Debian:~$ ping lnm2312
   
2. PING lnm2312 (192.168.1.61) 56(84) bytes of data.
   
3. 64 bytes from lnm2312 (192.168.1.61): icmp_req=1 ttl=64 time=0.402 ms
   
4. ^C
   
5. --- lnm2312 ping statistics ---
   
6. 1 packets transmitted, 1 received, 0% packet loss, time 0ms
   
7. rtt min/avg/max/mdev = 0.402/0.402/0.402/0.000 ms
   
8. cunzhang@Debian:~$ ssh lnm2312
   
9. Linux lnm2312 3.2.0-1-amd64 #1 SMP Sun Feb 5 15:17:15 UTC 2012 x86_64
   
10. 
    
11. The programs included with the Debian GNU/Linux system are free software;
    
12. the exact distribution terms for each program are described in the
    
13. individual files in /usr/share/doc/*/copyright.
    
14. 
    
15. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
    
16. permitted by applicable law.
    
17. Last login: Tue Jun 10 08:44:37 2014 from 192.168.1.60
    
18. cunzhang@lnm2312:~$ logout
    
19. Connection to lnm2312 closed.
    
20. cunzhang@Debian:~$ scp ~/test.data lnm2312:~/
    
21. ssh: Could not resolve hostname lnm2312: Invalid argument
    
22. lost connection
    

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(2) 访问本地vncserver的问题， 一般情况下都是通过vncviewer :3这种方式访问，现在却提示unable to resolve host by name，
用vncviewer 127.0.0.1:3可以访问。

1. cunzhang@Debian:~$ vncviewer :3
   
2. 
   
3. VNC Viewer Free Edition 4.1.1 for X - built Jan 30 2013 16:07:52
   
4. Copyright (C) 2002-2005 RealVNC Ltd.
   
5. See http://www.realvnc.com for information on VNC.
   
6. 
   
7. Tue Jun 10 08:46:18 2014
   
8. main:        unable to resolve host by name: Resource temporarily unavailable
   
9.               (11)
   
10. cunzhang@Debian:~$ vncviewer 127.0.0.1:3
    
11. 
    
12. VNC Viewer Free Edition 4.1.1 for X - built Jan 30 2013 16:07:52
    
13. Copyright (C) 2002-2005 RealVNC Ltd.
    
14. See http://www.realvnc.com for information on VNC.
    
15. 
    
16. Tue Jun 10 08:46:25 2014
    
17. CConn:       connected to host 127.0.0.1 port 5903
    
18. CConnection: Server supports RFB protocol version 3.8
    
19. CConnection: Using RFB protocol version 3.8
    
20. TXImage:     Using default colormap and visual, TrueColor, depth 24.
    
21. CConn:       Using pixel format depth 6 (8bpp) rgb222
    
22. CConn:       Using ZRLE encoding
    
23. CConn:       Throughput 20035 kbit/s - changing to hextile encoding
    
24. CConn:       Throughput 20035 kbit/s - changing to full colour
    
25. CConn:       Using pixel format depth 24 (32bpp) little-endian rgb888
    
26. CConn:       Using hextile encoding
    
27. CConn:       Throughput 20000 kbit/s - changing to raw encoding
    
28. CConn:       Using raw encoding

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chengxiaowei

第一个问题，  /etc/hosts中是否有
192.168.1.61  lnm2312  
字样？  如果没有，加入之后试试看。

vncview的问题不是很懂，建议看看你的域名解析服务器是否工作正常

apzc2529

回复 2# chengxiaowei

有的。你看我贴的输出结果，ssh命令可以解析lnm2312, 而scp却不行。