[SunHELP] Maximum users on a Solaris 2.6 server

[Nicholas Dronen]

Maxusers is a kernel parameter that affects processes, quotas
and the DLNC [1].  It does not affect the size of uid_t, which
is probably what you're hitting when you try to add a user
(presumably with useradd or admintool).  In fact, if you
look at the useradd man page (you don't say why you can't
add any more users, so I'm going on supposition), it says
that user ids must be "below MAXUID as defined in <sys/param.h>,"
which on my Solaris 8 system is 2147483647 (aka MAXUINT).

So, changing maxusers probably won't change the behavior
you're seeing, but you don't describe the behavior very
exactly, so I might be mistaken.  More detail about
the problem would help.

Regards,

Nicholas Dronen

[1] http://docs.sun.com:80/ab2/coll.707.1/SOLTUNEPARAMREF/@Ab2PageView/1934?DwebQuery=maxusers&oqt=maxusers&Ab2Lang=C&Ab2Enc=iso-8859-1

On Tue, Apr 03, 2001 at 10:59:23PM -0400, Steven B. Parsons wrote:
> /usr/ccs/bin/nm /kernel/genunix | grep maxusers 
> 
> [3572]  |         0|       0|NOTY |GLOB |0    |UNDEF  |maxusers
> 
> root at twister[592]> more /etc/system | grep maxusers
> *               set maxusers=40
> 
> root at twister[593]>      cat /etc/passwd  |wc
>     3696    4521  216715
> 
> Im in a situation on a Sun 450 where useradd will not allow
> anymore users to be added to the box.  Im thinking that If I
> change the maxusers variable in /etc/system to say 5000 it will
> correct this problem.  Well after doing a reboot -- -r also.
> 
> Could I get someone else's opinion on this before I make
> this change.  I do appreciate your response .
> 
> Thanks
> 
> Steven B. Parsons
> RoadRunner Sr System Engineer
> sparsons at columbus.rr.com
> 
> 
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