Re: Setting the maximum number files a user can open

["Simone Crider" <Simone Crider noaa gov>]

Disregard all previous messages ... tested the ulimit command on a 7.2
platform at the console ... it works!

Tested at the console of the 7.1 platform ... also works!!!  Not from
the remote ssh client!!

Thanks for your time & assistance.


Simone Crider wrote:
> 
> http://kb.redhat.com/view.php?eid=378
> 
> ___cliff rayman___ wrote:
> >
> > Simone Crider wrote:
> >
> > >system files as root, but that the "regular user" cannot change the
> > >limit, (execute the "ulimit -n 16000" cmd), once the system
> > >administrator granted the user the right.
> > >
> > yes.  i believe this is true. it cannot be changed by a regular user on
> > linux.
> >
> > >
> > >
> > >
> > >>I log out & then login as a regular user & get the following error ...
> > >>
> > >>$ ulimit -n 2048
> > >>bash: ulimit: cannot modify limit: Operation not permitted
> > >>
> > >>Appears that because I am a non-root user, that I cannot perform this
> > >>command.  I thought that by changing the hard limit that a regular user
> > >>would then be able to modify this value, at least to the hard limit?
> > >>
> > >>
> > >>
> > >
> > >According to the documentation, the regular user should be able to do
> > >this, correct?
> > >
> 
> The documentation that I quoted in my first msg. & am referring is from
> the Red Hat Linux Support Knowledgebase Search,
> 
> http://kb.redhat.com/view.php?eid=378
> 
> > i do not see that in my documentation.  check out:
> > man bash
> > /ulimit
> > /\-n
> >
> > which reads:
> > -n     The maximum number of open file descriptors (most systems do not
> > allow this value to be set)
> >
> 
> Yes, I did read that but was hopeful that it could be changed from what
> I read in the previously mentioned documentation.
> 
> > from some experimentation, you can lower the limit from the values
> > provided by
> > root's system settings, but you cannot raise it.  what happens when you
> > issue:
> > ulimit -n
> >
> > this should give you the current setting, which based on your previous
> > e-mails, you
> > would like to read 16000.
> >
> 
> I definitely do not want to lower the value ... my user had hit the
> limit.
> 
> I'm most definitely confused from all the documentation.  I thought that
> the fs.file-max value & the user's limit (ulimit -n) were related.  I've
> experimented by uping the systems fs.file-max value & the user still
> hits the user imposed limit, the default.  I have also gone as far as
> trying to change that default value w/in /etc/profile ... no luck there
> either.  How you get around this problem?  Is it possible with RH Linux
> 7.1?
> 
> Thanks for your input.
> 
> > --
> > ___cliff rayman___cliff genwax com___http://www.genwax.com/
> >
> > _______________________________________________
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> 
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