Who uses LXC in production?

Question

linux

We have been using OpenVZ on our servers for a long time. Everything suits, but as we all know, in 3 the OpenVZ kernel did not work out and Debian7 came out without OpenVZ support.
But out of the box, LXC containers are supported.
Tell me, who uses LXC in production? What are the pitfalls? How stable is the solution?

Answer 1

I use KVM and LXC + cgroups via libvirt.
Pitfalls depend on the target principles and deployment requirements.
In principle, if you write tests for target recipes, then any problems that arise will be solved before they spoil the nerves of customers.
I can’t say that containers are very stable, at least there are various artifacts: it refuses to restart, eats too much of the wrong thing and needs to be controlled through cgroups, or even starves. In general, basically different sides pop up from kernel to kernel ... Sometimes some goodies with OpenVZ are missing, such as live migrations and checkpoints.
The verdict is usable.
But be prepared for resource allocation issues.

Answer 2

We use with lxctl.
Everything is quite ok.
The main thing is to understand that you can exit the container into the dom0 system with the right skills.