Difference between revisions of "FAQ"
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== General == | == General == | ||
===== What is a Virtual Environment (Virtual Private Server, VPS, VE)? ===== | ===== What is a Virtual Environment (Virtual Private Server, VPS, VE)? ===== | ||
| − | See [[VE]] | + | :See [[VE]] |
===== Who needs OpenVZ? How it can be used? ===== | ===== Who needs OpenVZ? How it can be used? ===== | ||
| − | See [[Use cases]] | + | :See [[Use cases]] |
===== How is OpenVZ different from other technologies? ===== | ===== How is OpenVZ different from other technologies? ===== | ||
| − | See [[Introduction to virtualization]] | + | :See [[Introduction to virtualization]] |
===== How is OpenVZ updated and why it is secure? ===== | ===== How is OpenVZ updated and why it is secure? ===== | ||
| − | See [[Security]] | + | :See [[Security]] |
===== I want to show my appreciation to OpenVZ and put some logo to my site. Where to get it? ===== | ===== I want to show my appreciation to OpenVZ and put some logo to my site. Where to get it? ===== | ||
| − | See [[Artwork]] | + | :See [[Artwork]] |
== Installation and upgrade == | == Installation and upgrade == | ||
===== What hardware is supported by OpenVZ kernel? ===== | ===== What hardware is supported by OpenVZ kernel? ===== | ||
| − | See [http://www.virtuozzo.com/en/products/virtuozzo/hcl/ Virtuozzo HCL]. | + | :See [http://www.virtuozzo.com/en/products/virtuozzo/hcl/ Virtuozzo HCL]. |
===== Why there are different kernel flavours available and what do they mean? ===== | ===== Why there are different kernel flavours available and what do they mean? ===== | ||
| − | See [[Different kernel flavors (UP, SMP, ENTERPRISE, ENTNOSPLIT)]] | + | :See [[Different kernel flavors (UP, SMP, ENTERPRISE, ENTNOSPLIT)]] |
===== How do I rebuild the kernel? ===== | ===== How do I rebuild the kernel? ===== | ||
| − | See [[Kernel build]] | + | :See [[Kernel build]] |
===== What does 021stab018 in OpenVZ kernel version mean? ===== | ===== What does 021stab018 in OpenVZ kernel version mean? ===== | ||
| − | See [[Kernel versioning]] | + | :See [[Kernel versioning]] |
===== How can I check package signatures? ===== | ===== How can I check package signatures? ===== | ||
| − | See [[Package signatures]] | + | :See [[Package signatures]] |
===== Is it possible to run x86 VPS on a x86_64 arch? ===== | ===== 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. | + | :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 == | == Networking == | ||
===== How do I set up VPN for a VE? ===== | ===== How do I set up VPN for a VE? ===== | ||
| − | See [[VPN via the TUN/TAP device]] | + | :See [[VPN via the TUN/TAP device]] |
===== What is veth and how do I use it? ===== | ===== What is veth and how do I use it? ===== | ||
| − | See [[Virtual Ethernet device]] | + | :See [[Virtual Ethernet device]] |
== User Beancounters == | == User Beancounters == | ||
| + | |||
===== How can I reset <code>failcnt</code> in <code>/proc/user_beancounters</code>? ===== | ===== How can I reset <code>failcnt</code> in <code>/proc/user_beancounters</code>? ===== | ||
| − | 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. | + | :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. | + | :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. | + | :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. | + | :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. |
== Troubleshooting == | == Troubleshooting == | ||
===== My kernel crashed. What should I do? ===== | ===== My kernel crashed. What should I do? ===== | ||
| − | See [[When you have an oops]] | + | :See [[When you have an oops]] |
===== I see a lot of processes in D state. What does that mean? ===== | ===== I see a lot of processes in D state. What does that mean? ===== | ||
| − | : See [[Processes in D state]] | + | :See [[Processes in D state]] |
Revision as of 07:14, 13 July 2006
Contents
- 1 General
- 1.1 What is a Virtual Environment (Virtual Private Server, VPS, VE)?
- 1.2 Who needs OpenVZ? How it can be used?
- 1.3 How is OpenVZ different from other technologies?
- 1.4 How is OpenVZ updated and why it is secure?
- 1.5 I want to show my appreciation to OpenVZ and put some logo to my site. Where to get it?
- 2 Installation and upgrade
- 2.1 What hardware is supported by OpenVZ kernel?
- 2.2 Why there are different kernel flavours available and what do they mean?
- 2.3 How do I rebuild the kernel?
- 2.4 What does 021stab018 in OpenVZ kernel version mean?
- 2.5 How can I check package signatures?
- 2.6 Is it possible to run x86 VPS on a x86_64 arch?
- 3 Networking
- 4 User Beancounters
- 5 Troubleshooting
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.
