Contents
General
What is a Virtual Environment (Virtual Private Server, VPS, VE)?
- See VE
Who needs OpenVZ? How it can be used?
- See Use cases
How is OpenVZ different from other technologies?
How is OpenVZ updated and why it is secure?
- See Security
I want to show my appreciation to OpenVZ and put some logo to my site. Where to get it?
- See Artwork
Installation and upgrade
What hardware is supported by OpenVZ kernel?
- See Virtuozzo HCL.
Why there are different kernel flavours available and what do they mean?
How do I rebuild the kernel?
- See Kernel build
What does 021stab018 in OpenVZ kernel version mean?
How can I check package signatures?
Is it possible to run x86 VPS on a x86_64 arch?
- Sure :) We actually did some work on that to enable migration of x86 VE from x86 to x86_64 and back, and to enable using 32-bit iptables in 32bit VE on an x86_64 system.
Networking
How do I set up VPN for a VE?
What is veth and how do I use it?
User Beancounters
How can I reset failcnt in /proc/user_beancounters?
- In short — only by stopping and starting a VE. In some cases you need to keep VE in a stopped state for a few minutes.
- Long answer: there can be many application who reads
/proc/user_beancounters, and thus if you will reset it you gonna have problems with those other apps. - Consider what happens if you will reset you sent/received packets/bytes statistics on the network interface — programs which reads will be screwed up.
- So the proper thing to watch for is not the current value of, say, failcnt, but whether it is increased (from the previous reading) or not. You can write a simple shell script to do just that.