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> On 27 Aug 2020, at 16:25, Paul de Weerd <we...@weirdnet.nl> wrote:
> 
> On Thu, Aug 27, 2020 at 02:52:04PM +0200, Mischa wrote:
> | Hi All,
> | 
> | I am managing a OpenBSD instance for a customer of mine who uploads camera 
> images via sftp to be used in a single location.
> | It looks like there are quite a number of camera’s uploading at once.
> | I am seeing a lot of message like:
> | 
> | Aug 27 13:53:28 images sshd[68494]: error: do_exec_no_pty: fork: Resource 
> temporarily unavailable
> | Aug 27 13:53:43 images sshd[53989]: error: do_exec_no_pty: fork: Resource 
> temporarily unavailable
> 
> For the archives .. you're not running out of pty's but..... ^^^^
> 
> ....you can't fork.  That's another resource that's limited.  There's
> a kernel limit (sysctl kern.maxproc), but there's also ulimits (those
> you are more likely to hit, especially if it's all the same user).

Thanx Paul! That was indeed it.
Increasing the maxproc in /etc/login.conf made it work.

Mischa

> | I have tried adding a bunch of pty’s and increased them,
> | inadvertently from 62 to 620, but I guess I missed something. :/
> 
> You missed the 'fork' part.  Oh, and the "no_pty" part of the function
> that was complaining: sftp can work without a pty (see
> https://man.openbsd.org/ssh#T - sftp doesn't need a pseudo terminal
> IIRC).
> 
> | Any insights someone can share?
> 
> Cheers,
> 
> Paul
> 
> -- 
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