Vurtualization

List all the tags for a image on docker hub

2020/03/16

Something that you may want to know sometimes and docker cli does not show by default is all the tags for the image on docker hub. Here is example to list all tags fro the centos image  curl …

libvirt- Create virtual machine with text console only interface

2019/05/27

virt-install is an amazing tool to create VMs. If you have created a config file (Kickstart file – ks.cfg), then its only one line un-attended install. If you are using this on remote host with ssh …

Linked clone with qemu-img

2018/04/09

As you would have seen in Virtualbox or vmware, there is option to create a linked clone. I wanted to use the same feature as “Snapshot” feature anyway does not look/work so great with virt-manager. …

vagrant box to libvirtd (QEMU) VM

2018/03/26

Like ova images, you can use box images as well with Qemu. After all, both have the disk images, so here is the script to do that. Just put the script somewhere in your path and run with ova or box …

Add ova file as VM on Linux with libvirt (Qemu)

2018/02/12

Although the commands are very simple and just 2-3 steps but I keep forgetting them and hence wrote the following script: The script takes input as “ova” filename and then creates the qcow2 image and …

Better windows VM experience on Qemu

2018/01/29

With Qemu resize and copy-paste option, Windows VM seems to be lacking all this. This can be fixed by installing the spice tools in Windows VM. To do this, head over to spice space and download the …

Fix display size on libvirt/Qemu guest

2017/05/22

Lot of times I find myself of VM that does not correctly resize the screen display and that is literally nuisance. So, here is quick and dirty fix for this. First you need to find out information …

Separation Anxiety: A Tutorial for Isolating Your System with Linux Namespaces

2017/02/06

With the advent of tools like Docker, Linux Containers, and others, it has become super easy to isolate Linux processes into their own little system environments. This makes it possible to run a whole …

ansible with docker dynamic inventory

2017/01/09

So, I have a few dockers. Every now and then I want to run some command on all of them. Doing ‘docker exec’ is tiresome. I found this neat solution with ansible that I thought I should share with you. …

supernova – manage multiple openstack environment

2016/08/01

supernova is an easy to use tool that helps manage multiple openstack environments. Details – […] To get started, start with installing supernova with dnf install supernova and after that you …

Install virtual machines in one line

2016/07/25

To install a VM from command line, you can use the following command. Change the required parameters as need but you need to change at-least CDROM iso image and disk-path.

Python script to manage virtual machines with python API for libvirt.

2016/07/04

Most of times I use virt-manager to manage VMs but sometimes, I have to manage VMs on other hosts over ssh when connected over VPN or while I am working remotely. GUI like virt-manager thus becomes …


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