can not fork user shell: Resource temporarily unavailable

[BelCloud]

Hi

I'm getting the following error:

can not fork user shell: Resource temporarily unavailable

when i try to run "su user" inside a lxc centos6 container.

Any idea what can cause it?

 

[qubozik]

I am seeing this, too.

This does not occur with Ubuntu or Debian templates.

I checked file descriptor limits, open thread limits, etc. All seems well.

Anyone have any ideas?

 

[Sebastian Schubert]

We had the same Problem with centos6 based lxc containers

fixed it by changing the nproc to a higher limit than in /etc/security/limits.d/90-nproc.conf
standard is 1024 for non root users, which can caus trouble when using many nearly identical containers