With XenServer it is possible to create backups of VMs, even if they are running. The process is as follows: Search for the uuid of the VMs to backup Create a snapshot of each (running) VM Save the snapshot to
Assigning more than 8 virtual CPUs in XenServer
With the XenServer Windows client called XenCenter it is possible to manage multiple XenServer hosts, create virtual machines, watch the console of virtual machines, etc. One of the limitations I recently ran into (this is a luxury problem, I know)
Changing CPU and memory settings on XenServer VMs
You can change the CPU and memory settings of XenServer virtual machines using the API. XenServer allows you to set the priority of the virtual machine CPU (called weight), set a limit on the amount of CPU the virtual machine
Installing XenServer Tools on Ubuntu 10.04
Please note that this article was written in 2010. Since then XenServer 6 has been introduced which supports Ubuntu 10.04 and makes it a lot easier to install Ubuntu 10.04 with guest tools. Please take a look at this newer
Getting CPU, memory, disk and network metrics from XenServer
In a previous article we looked at getting CPU and memory metrics from XenServer. As noted in that article, as of version 5.5 of XenServer, the preferred way of getting virtual machine metrics is through HTTP calls to get RRD
Using XenServer in a routed IP network
Hetzner is a hosting company in Germany where you can rent dedicated root servers per month. Using their KVM-over-IP setup, it is possible to install operating systems that are not available by default, such as XenServer by Citrix. With the
Getting XenServer VM metrics in Java
XenServer is a product of Citrix that can run virtual machines on a set of physical hosts called a pool. There is an API that allows you to create programs that interact with the XenServer pool. There are some function
Top cloud computing providers
Although there are lots of different letters you can put in front of “as a service”, there are typically three that everybody agrees about. The following picture sums these up: In this article we will look into some of the
Using a Xen virtual machine image with Eucalyptus
In the previous article we created a CentOS virtual machine image that was usable with Xen. In this short article we will use this image in Eucalyptus. Bundle, upload and register the kernel with Eucalyptus: ec2-bundle-image –image /boot/vmlinuz-2.6.18-128.1.6.el5xen –kernel true
Creating a CentOS Xen virtual machine image
In this article we will create a CentOS 5.2 virtual machine image that can be used by Xen. We need to bring three pieces together: The kernel (vmlinuz) The ramdisk (initrd) The filesystem Kernel The easiest way to create a