Re: setting up max ptys under 5.x
From: Joshua Oreman (oremanj_at_webserver.get-linux.org)
Date: 06/27/03
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Date: Fri, 27 Jun 2003 12:49:29 -0700 To: Josh Brooks <user@mail.econolodgetulsa.com>
On Fri, Jun 27, 2003 at 12:29:41PM -0700 or thereabouts, Josh Brooks wrote:
>
>
> On Fri, 27 Jun 2003, Joshua Oreman wrote:
>
> > > maxusers to 512 ... any new toggles I should know of to be able to use max
> > > ptys on the system, or can I just follow whatever directions I hope to
> > > receive regarding creating the devices ?
> >
> > 5.x creates the devices automatically. So if you have 256 users, you'll have 256
> > ptys. If you have 0 users, you'll have 0 ptys. maxusers has no effect, setting
> > it to 512 does seem a bit high...
>
> Thank you - that is nice to know. I have a related question - does this
> apply inside of jails as well ? I remember some testing on 4.x I was
> doing with 16 jails, and even though I had 256 pty /dev nodes, if the /dev
> inside the jail only had 32 of them (the default) then the jail users
> would start getting denied logins and running out of ptys generally.
>
> This happened even tho the underlying fbsd system had all 256 ptys - the
> only way to solve it was to create all 256 ptys in the /dev of _the jail_
> as well.
>
> How will this work in 5.x - will it be automatic for everyone, or should I
> perhaps mount a devfs for each jail ?/?
Devfs manages the ptys, so you will have to mount a devfs in the jail.
I would suggest using devd to prevent the more "sensitive" devices from
going in. Or just rm them.
-- Josh
>
> thnks!
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