Script to restart application services on remote systems

vinayhr · 09-02-2006, 09:30 AM

Hi,

I have a task of writing a script, in which it should check the runing of java process on multiple Linux remote systems ( around 170 servers) , If they are running then they should stop it and restart it.
Requirements:
1. stop the java process
2. Check for any orphan java process. IF yes, then kill it.
3. start the java process
4. recored the out out pf each four steps in a file.
5. Send the recoreded output in a mail.

Could anybody please help me in doing this.

Thanks in advance.

Mara · 09-02-2006, 03:56 PM

It's not hard. You need an unified access method (ssh for example) and a file or different database with login/access info. Then, writing one simple script that does the task on a server is easy. It's harder to do the main part (loop trying all the servers) and it depends heavily on the access method.

Try to write first version of the script and see what you have problems with. Then, if you have more specific questions, just post them.

vinayhr · 09-03-2006, 11:59 PM

SSH part is working fine.

But I am confused as which method to use.

example: Should I use for loop or if statment.

If you have example script. could you please pass me on.

Tinkster · 09-04-2006, 12:37 AM

Code:

for i in `cat hostlist`; do ssh user@$i -C "remote-script" > server$i.log; done; tar czf --remove-files result.tar.gz server*.log; nail -a result.tar.gz -s "Results" user@email; rm result.tar.gz

Improve to your hearts content, e.g. I'm not doing any error checking, you may NOT
want to delete the result, but keep it versioned for a while ...

Cheers,
Tink