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KVM-Virtualization under OpenSUSE

November 10, 2016 by Igor Drobot Leave a Comment

libvirt

KVM, Kernel-based Virtual Machine, is a hypervisor built into the Linux kernel. It is similar to Xen in purpose but much simpler to get running.

Unlike native QEMU, which uses emulation, KVM is a special operating mode of QEMU that uses CPU extensions (HVM) for virtualization via a kernel module.
[Read more…]

Filed Under: Linux Tagged With: KVM, openSUSE, virtualization

Hetzner /28 Subnet with KVM

January 29, 2014 by Igor Drobot 6 Comments

Hetzner

Subnet configuration on a Hetzner dedicated root server (EX40) is a bit tricky than a normal additional single ip addresses that you can buy for 1EUR. So I wrote the configuration down: [Read more…]

Filed Under: Debian, Linux, Networking, Virtualization Tagged With: hetzner, KVM, virtualization

DRBD master/slave setup

July 7, 2011 by Igor Drobot 8 Comments

In the last time I get a lot questions and feedback to some older posts (Active/Passive Cluster) where I used DRBD. And actually I never wrote how to setup DRBD and I try to fill this gap now. Also this post will be a new ground for some new ideas and posts related to Active/Passive Clustering with KVM.

DRBD (Distributed Replicated Block Device) is a really cool cluster solution to have radundant data on two or more nodes. Everybody know RAID, DRBD is like RAID 1 over network.
[Read more…]

Filed Under: Debian, Linux, Networking Tagged With: Cluster, Debian, DRBD, drbd syncer, HA, KVM, LVM, Ubuntu

KVM manage virtual machines with virsh

March 16, 2011 by Igor Drobot Leave a Comment

Virsh is the main interface for managing virsh guest domains. The program can be used to create, pause, and shutdown domains.

Some of this commands may be helpful if you have no chance to run virt-manager.

Show guest information:

Show a list of all running guests: virsh list
Show a list of all available guests: virsh list –all
Show a guest’s info: virsh dominfo GUEST_NAME
[Read more…]

Filed Under: Linux Tagged With: KVM, qemu, virsh

Convert VMware Image .vmdk to VirtualBox Image .vdi

December 18, 2010 by Igor Drobot 12 Comments

Some days ago I started to give up my VMWare Workstation Server (version: 6.5.1 build-126130) that is running on Debian Lenny.
The reason was it’s very difficult to upgrade (you see my installation is a little bit outdated:)) and maintain.

The first step is to migrate to VirtualBox running. And I wrote this little tutorial to migrate VMWare VMDK Image to VirtualBox.

Step 1:
Start Virtualbox
Start VBox
Step 2:
File -> Virtual Media Manager
Manager

[Read more…]

Filed Under: Debian, Linux, Virtualization Tagged With: convert vmdk, KVM, qemu, VirtualBox, VMWare

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