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Shell Programming and Scripting

Problem with ssh termination...

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Top Forums Shell Programming and Scripting Problem with ssh termination...
# 1  
Old 08-18-2010
Error Problem with ssh termination...
hi all,

i have a situation where i run ssh command from a unix machine to execute few scripts on 2 other unix machines.


my problem is, the scripts that i run will start few commands on the 2 servers and will quit....i am able to quit from the script but i have to give ctrl+c (on the server from where i am executing ssh) to exit from an ssh session.This situation is gettin worse when i try to run those scripts on 20 machines.i need to give a ctrl+c everytime.


can someone give a suggestion...



thanks in advance...
# 2  
Old 08-18-2010
Hi,

I have some questions:
- The script you run on the remote servers, you developed them? How do you "exit"? Are you sure the scripts finished?
- How are you executing the scripts on the remote servers?
# 3  
Old 08-18-2010
yes i developed those scripts. i actually run vmstat,iostat on server.i just give "exit" in the script which runs on the destination server.


ssh ${HOST} '/ravi/test/stat_collect.ksh start'


HOST is the variable that has the host on which i execute


where start is a parameter to the script.
# 4  
Old 08-18-2010
This one works to me:

Code:
testuser@remotesvr # more test.sh
#!/bin/sh
iostat
exit

Code:
[localsrv]fmv:/home/fmv/scripts/tmp>echo "./test.sh" | ssh -T -C -l testuser remotesvr
Sun Microsystems Inc.   SunOS 5.10      Generic January 2005
   tty        md10          md11          md12          md20           cpu
 tin tout kps tps serv  kps tps serv  kps tps serv  kps tps serv   us sy wt id
   0  108  15   2   27   12   2   20   12   2   20    0   0   16    1  2  0 97

I have ssh keys on each server so I don't need to provide a password.

Let me know if it works for you.
# 5  
Old 08-18-2010
no its not working.....


it says "Name or service not known"




client:
Code:
ssh ${HOST} '/ravi/test/stat_collect.ksh start'


server:
in stat_collect i run iostat

---------- Post updated at 08:32 AM ---------- Previous update was at 08:29 AM ----------

when i use "-T -C -l" options to my ssh cmd i got that error
# 6  
Old 08-18-2010
Before executing your script, let's create a simple one and try to solve the problem, after we can go on.

On the remote host create this script in the user's home directory:
Code:
# cat test.sh
#!/bin/sh
echo "Arguments: [$*]"
iostat
exit

On the local host execute the following command:
Code:
# echo "./test.sh start finish" | ssh -T -C -l <RemoteUser> <RemoteServer>

The error you faced: "Name or service not known" is because of the wrong position of the arguments I gave you and you used wrongly.

Let me know the result.
# 7  
Old 08-18-2010
its working....but i want that iostat to continue running on the server and quit from ssh
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