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I need to add 30 users to 50 servers

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# 1  
Old 09-24-2013
I need to add 30 users to 50 servers
Hi Y'all,

I need help adding 30 users to 50 servers.

Is there a way to automate this?

I'm using this command:
Code:
sudo mkuser pgrp=srvadm gecos=Spears, Brittney auditclasses=ALL sugroups=system,security user01

But I'm doing it per user, per server...HOW CAN I MAKE THIS EASIER? Smilie

JN
Last edited by Scott; 09-24-2013 at 06:10 PM.. Reason: Code tags
# 2  
Old 09-24-2013
Perhaps NIS is what you want to use here.

This also helps keep the accounts in sync (eg if password is changed on 1 server it changes for all).

If your likely to need to run other commands on all these 50 servers I'd suggest getting passwordless ssh working between your box and the 50. you can then do something like:

Code:
for server in sever1 server2 server3
do
    ssh $server sudo mkuser pgrp=srvadm gecos=Spears, Brittney auditclasses=ALL sugroups=system,security user01
done

# 3  
Old 09-24-2013
... and then run a while loop as the ssh remote command, reading user info from a file containing all 30 users' details, e.g. like
Code:
ssh $server "while read A; do ls \$A; done" <file

# 4  
Old 09-24-2013
I need to add 30 users to 50 servers
Hi Thanks for the replies!

re: NIS

What is this?

Currently, I need to ssh to the server, then run the sudo mkuser command...

So instead I would input this for each server?:
ssh $server sudo mkuser pgrp=srvadm gecos=Spears, Brittney auditclasses=ALL sugroups=system,security user01
done

what is the difference from just doing it 1 by 1?

---------- Post updated at 04:26 PM ---------- Previous update was at 04:25 PM ----------

I'm not sure how to decifer this:

Code:
ssh $server "while read A; do ls \$A; done" <file

Last edited by Scott; 09-24-2013 at 07:55 PM.. Reason: Please use code tags
# 5  
Old 09-24-2013
That is an example doing a directory listing of those remote filenames that are contained in file. If you list your users' data in file, you can read the respective data and use these variables in the mkuser command, looping until file end.
# 6  
Old 09-24-2013
Quote:
Originally Posted by jennie28n
re: NIS

What is this?
For me, the first Google result is relevant.

Are you going to modify a user's account on all 50 machines if that user needs their password changed? Or if a user needs to be disabled? Or if a user needs to be added or deleted from a group? Or if ....

If you share with us the big picture of what's going on, someone might be able to give you well-informed advice.

Regards,
Alister
# 7  
Old 09-24-2013
NIS: Network Information Service

Quote:
A NIS/YP system maintains and distributes a central directory of user and group information, hostnames, e-mail aliases and other text-based tables of information in a computer network. For example, in a common UNIX environment, the list of users for identification is placed in /etc/passwd, and secret authentication hashes in /etc/shadow. NIS adds another “global” user list which is used for identifying users on any client of the NIS domain.
what is the difference from just doing it 1 by 1?

You can build script that adds all 20 users, and then copy/execute the script on all 50 servers using ssh. This will reduce your effort and eliminate the possibility of typos causing certain servers to have different setups.

But again if the users need to be kept in sync form this date forward NIS/YP is the preferred solution.
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