Creating user accounts....

Srihari Angaluri srihari at mpi-softtech.com
Thu Feb 13 18:00:55 EST 2003


Is there any serious performance/scalability issue to using NIS, as
opposed to copying the individual files to each and every node on the
cluster? Is this even a desirable option for large clusters, for
example? What if I need to add more accounts? I have to copy the files
all over again, right? Of course I can write scripts to automate the
whole process, but why not maintain a central user account database
using NIS? Can someone please elaborate on what the side effects are to
using NIS?

Srihari

> -----Original Message-----
> From: beowulf-admin at beowulf.org 
> [mailto:beowulf-admin at beowulf.org] On Behalf Of RANGI, JAI
> Sent: Thursday, February 13, 2003 5:42 PM
> To: 'Jeffrey B. Layton'
> Cc: 'beowulf at beowulf.org'
> Subject: RE: Creating user accounts....
> 
> 
> 
> Yeah this is also a good idea,
> 
> one line ftp can be done this way 
> Root $ scp /etc/passwd root at node1:/etc/passwd 
> it will ask for a password type the password and your done
> 
> and do the same for all three files and on all nodes..
> 
> I was thinking of writing a script for this and run the 
> script for that I
> was thinking of using scp command in batch mode by using the 
> options -B like
> this and should not ask for password 
> 
> root $ scp -B /etc/passwd root at node1:/etc/passwd   
> //but it says
> Permission denied (publickey,password).
> lost connection
> 
> Any idea how to fix this 
> 
> Jeff: are you doing the same or do you have some better way 
> to do it ??????
> 
> Jai Rangi
> 
> 
> -----Original Message-----
> From: Jeffrey B. Layton [mailto:laytonjb at bellsouth.net] 
> Sent: Thursday, February 13, 2003 2:33 PM
> To: RANGI, JAI
> Cc: 'beowulf at beowulf.org'
> Subject: Re: Creating user accounts....
> 
> Jai,
> 
>    I personally prefer files. You make the account on the master
> node and then copy /etc/passwd, /etc/group, /etc/shadow, etc.
> to all of the nodes. It's worked well for us so far on several
> clusters (16 nodes, 64 nodes, 65 nodes, 26 nodes, 288 nodes).
> 
> Good Luck!
> 
> Jeff
> 
> >What is the best way to create and manage user accounts on Beowulf,
> >Is there a way that you create account on Master node and 
> all the slave
> node
> >will get information from Master node only.
> >
> >I was thinking of NIS, if you use NIS then still so you have 
> to create
> >account on all the nodes.
> >
> >
> >
> >Jai Rangi
> >Unix System Administrator, Computing Services,
> >South Dakota State University
> >Brookings SD 57006.
> >email: jai_rangi at sdstate.edu
> >Ph: 605 688 4689
> >Fax: 6056884605
> >------------------------------------------------------- 
> >In the world with no fences, why would you need Gates ? 
> >                                          - Linux 
> >------------------------------------------------------- 
> > 
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> >  
> >
> 
> 
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