nixCraft

Hi,
I would like to do ssh to many hosts and then would like to do su - with respective host's passwords and execute certain commands.

This being a secure and big network , we have to login every server individually and then su with different passwords.

So is there a way to achive it?

Thanks a lot in adance

Yes you can do that but you need to explain the same in more details. There a few automated tool exists that can do the job but givme out more info

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Vivek | My personal blog
Linux Evangelist
Play hard stay cool

Glad to see a response.

This is the scenerio:

Hostname : host1, host2, host3

(Username has same password on all the server
Username: user
Password for user: password

Different host has different root passwords
Host:host1 - root password host1
Host:host2 - root password host2

so it would be like

ssh -l <user> host1
after giving password
su -
<root password>
command
command
exit

Will this make any sense?

Thanks again

There are two ways..
a) Store actual password in text file (which is bit risky if someone got access to file, you are doomed)
b) Use ssh keys for automation and login - which what I recommend
c) Write a daemon / service and work in client / server environment to control all server. Requires network programming using perl / php /c /c++ etc. Difficult to maintain

Solution b is easy to use and implement:
First generate ssh key and upload to all your servers
Don't use su, use sudo w/o password to run commands
Write script to connect such as
Run above script for all server or just add for loop and read all server names form an array.

Hope this helps!

__________________
Vivek | My personal blog
Linux Evangelist
Play hard stay cool