Install xen tools centos 5

System requirements. Configuration limits. Quick start. Technical FAQ. Installation and deployment scenarios. Boot from SAN. Network boot installations. Partition layout. Install on small devices.

VM User's Guide. Windows VMs. Linux VMs. Migrate VMs. Update VMs. Import and export VMs. After the initial reboot, your Windows OS has tools but also extra drivers for Xen better perfs , eg in your device manager: Windows quiesce snapshots You have the agent management, but that's not enough if you want to take quiesced snapshots!

You can read mon on quiesce snapshots on our previous blog post: XenServer quiesce snapshots What those tools are doing? Basically, goals of those tools are: to report extra VM info that only the Operating system can know, not your underlying hypervisor , like VM IP address, kernel version etc. Update tools You want to update tools?

Just do the same procedure than for installing them. The installation configuration should now be modified for non-install use. Instead, it is using pygrub as a bootloader. If a GRUB configuration was found, this will be used to boot a kernel. If yum update pulls in a security updated kernel in the domU, it will automatically be used during the next boot of the domain. Another change is that we have changed how to handle crashes and reboots.

You'll usually want to reboot a domain if a crash or reboot occurs. With this configuration in place, you can test this domain: xm create mailserver If you have installed SSH, you can log in to that domain through SSH, or you can use the Xen console: xm console mailserver You can now administrate the domain as a usual CentOS machine. You can shut down the domain with: xm shutdown mailserver For more information on the options that xm provides, please refer to the xm manual page.

An older version of libvirt that supports Xen is included in CentOS 5. Newer versions also provide abstraction for KVM and qemu. A full, graphical desktop Linux installation will require considerably more a minimum of between Mb and Mb will provide reasonable, but not spectacular, performance.

If no output is displayed, then your CPU is not able to support Xen virtualization. If, on the other hand, you see output similar to the following, then you can proceed with the Xen configuration note that this line will be repeated for CPUs with multiple cores :.

This can be verified using the following commands:. If your system does not include this support you can still use Xen in para-virtualization mode.

You will not, however, be able to run Microsoft Windows as a guest operating system. Xen requires a specially modified Linux kernel and a number of tools in order to operate.

By default, CentOS does not install this Kernel or these tools unless you specifically selected the Virtualization group of packages during installation process. The next step, therefore, is to prepare the operating system for Xen. Begin by installing the virtualization tools and kernel as follows:.

This command will install all the required packages approximately 16 packages in total , and configure the boot loader to provide a Xen virtualization option when the system is next booted. Once the virtualization packages have been installed close down any running applications and reboot the system. When the boot screen appears hit any key to enter to boot menu and select the CentOS Xen boot option. If a Xen boot option is not provided, boot using the standard Linux kernel and execute the following commands before rebooting once again:.

When the boot has completed, log in as usual and open a Terminal window. In that window run the following command to verify that kernel with Xen support has loaded:. At this point the only domain that should be listed is domain-0 representing the host environment. When guest operating systems are running, these too will be listed. Guest systems can easily be configured using either the virt-install command-line tool, or the virt-manager GUI tool.

For the purposes of this chapter we will use the virt-manager tool.