How to Install Xen Hypervisor on CentOS 7
Xen is an open-source hypervisor that allows you to create and run virtual machines on your CentOS 7 server. In this guide, we will walk you through the step-by-step process of installing Xen on CentOS 7.
Step 1: Update Your System
Before installing Xen, it is essential to update your CentOS 7 system to ensure that you have the latest packages and security updates. You can update your system by running the following commands:
sudo yum update
Step 2: Enable Virtualization in BIOS
Before you can install Xen, you need to ensure that virtualization support is enabled in your server’s BIOS. This setting is usually found under the “Virtualization Technology” or “VT-x/AMD-V” option. Make sure to enable this feature before proceeding with the installation.
Step 3: Install Xen Hypervisor
To install Xen on CentOS 7, you can use the following command:
sudo yum install centos-release-xen
After installing the CentOS Xen repository, you can proceed with the installation of the Xen hypervisor by running the following command:
sudo yum install xen
Step 4: Configure Xen
Once Xen is installed, you need to configure it to start automatically when your system boots up. You can do this by running the following command:
sudo systemctl enable xen-qemu-dom0
Next, you need to add the following line to your /etc/default/grub file:
GRUB_CMDLINE_XEN="dom0_mem=2048M,max:2048M"
Finally, update your GRUB configuration by running the following command:
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
Step 5: Reboot Your System
After completing the configuration steps, you can reboot your system to apply the changes:
sudo reboot
Once your server has restarted, Xen should be up and running, allowing you to create and manage virtual machines on your CentOS 7 system.
That’s it! You have successfully installed Xen on CentOS 7. Enjoy exploring the world of virtualization with Xen!