Changing maximum number of groups in FBSD - is it feasible?
Jon Falconer
jfalconer at puc.edu
Wed Dec 7 10:32:46 PST 2005
On Wed, 7 Dec 2005, Ian Moore wrote:
> Hi,
>
> I'm toying with the idea of increasing the maximum number of groups a user can
> belong to on one of my servers - we have a rather complex organisation and
> we're hitting the 15 group limit for some people.
>
> There seems to be differing opinions on how to do this and if it's actually
> feasible. One post I found said:
>
> > in src/sys/sys/syslimits.h there is a constant named 'NGROUPS_MAX'.
> > change it to however many you need (within reason), rebuild/install world
> > and kernel.
>
> Another said you have to change all sorts of things in the source, modify a
> kernel parameter, rebuild world and rebuild any port that uses NGROUPS -
> which probably means a portupgrade -fa.
>
> There is talk of a maxgroups() parameter in the kernel, but NOTES makes no
> mention of this.
>
> I wonder too if some apps would need their own configuration altered to allow
> them to work with the higher limit.
>
> So I just wanted to ask if anyone has successfully raised the NGROUPS_MAX
> limit, especially when running samba & nfs on the system?
>
> If not, I'll work around the problem a different way.
>
> (BTW I'm running 5.4-RELEASE)
>
> Cheers,
> --
> Ian
> gpg key: http://home.swiftdsl.com.au/~imoore/no-spam.asc
>
Ian,
Since you are running FreeBSD 5.x, have you considered using ACLs? See the
handbook section 14.12.
Jon
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