How to Install OpenVZ on Arch Linux

OpenVZ is an operating system-level virtualization technology that allows you to run multiple Linux containers on a single physical server. This guide will help you install OpenVZ on Arch Linux.

Prerequisites

Before installing OpenVZ, make sure your Arch Linux system is up-to-date. You can do this by running the following command in a terminal:

sudo pacman -Syu

Next, make sure your system meets the hardware requirements for OpenVZ. You'll need a 64-bit processor with hardware virtualization support (Intel VT-x or AMD-V) and at least 4GB of RAM.

Installing OpenVZ

Follow these steps to install OpenVZ on your Arch Linux system:

Install the OpenVZ kernel package from the AUR (Arch User Repository):
```
git clone https://aur.archlinux.org/linux-openvz.git
cd linux-openvz
makepkg -si
```
This will download the package from the AUR, build it, and install it on your system.
Install the OpenVZ userspace tools from the official Arch Linux repositories:
```
sudo pacman -S vzctl vzquota
```
This will install the tools necessary to manage OpenVZ containers.
Modify the kernel options. You need to add three new arguments to the grub configuration file (usually located in /etc/default/grub):
```
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX="intel_iommu=on iommu=pt ipv6.disable=1"
```
Save the changes and update the GRUB configuration:
```
sudo grub-mkconfig -o /boot/grub/grub.cfg
```
This will update the boot configuration file with the new options.
Reboot your system to boot into the new OpenVZ kernel.
Start the OpenVZ service:
```
systemctl start rc-local.service
```
This will start the OpenVZ service and enable it to start automatically at boot time.
Verify that the OpenVZ service is running:
```
systemctl status rc-local.service
```
This should display a status message indicating that the service is running.

Congratulations! You have now installed OpenVZ on your Arch Linux system. You're now ready to start creating and managing containers.