How to Fix Openstack Nova error “NoValidHost: No valid host was found.There are not...

I was trying to Deploy Openstack for testing inside VirtualBox and i got an error "NoValidHost: No valid host was found.There are not enough hosts available." while trying to run an...

How to convert VirtualBox Disk Image (VDI) and img to Qcow2 format

This simple guide will show you the easiest way to convert VDI disk image to use on your Openstack Cloud environment. It's easy to use and you just have to isntall...

How to fix Vagrant ssh authentication failure after packaging vagrant box

Sometimes when you package VirtualBox VM to get vagrant box, you get message "Warning: Authentication failure. Retrying... " while trying to start vagrant machine. Check Step by step guide on using existing...

How to enable and use SSH X11 Forwarding on Vagrant Instances

This guide will teach you how to configure X11 forwarding to use on Virtual Machine instances managed by Vagrant.This is a series Tutorial on building Virtual Labs with Vagrant and VirtualBox. We...

Step by step guide on using existing virtual machines with Vagrant

This will guide you on packaging existing environments to use with Vagrant, replacing the shared disk with a new box file.These box files can make managing virtual machines and different versions...

How to add,install and run CentOS 7 Vagrant box to Virtualbox using Vagrant

Hello guys. Today we'll look at How to install centos 7 box with vagrant on virtualbox. Below are the steps to follow 1) First download the Centos 7 vagrant box from the...

How to install Virtualbox Latest on Ubuntu and Kali Linux

Welcome to our guide on how to How to install Virtualbox Latest on Ubuntu and Kali Linux. VirtualBox allows you to run more than one operating system at a time. This...

How to Install VirtualBox on Kali Linux, Ubuntu and Debian

Welcome to how to Install VirtualBox on Kali Linux, Ubuntu and Debian. What's VirtualBox? VirtualBox is a cross-platform virtualization application; basically, it is a type 2  hypervisor allowing you to run multiple operating...