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...

Openstack Liberty Lab Part Seven: Configure Horizon Dashboard Service

Openstack Horizon service is just a web interface that enables cloud administrators and users to manage various OpenStack resources and services.It is powered by django which is a popular web framework. The...
Puppet 4 On RHEL 7 and CentOS 7

Getting Started and Working with Puppet 4 On RHEL 7 and CentOS 7

Puppet is a Systems Configuration Management/Systems Automation framework written in Ruby that allows system administrators to programmatically provision, configure, and manage servers, network devices, and storage, in a data center or...

How To Configure a Static IP Address on CentOS 7.0 and 6.5

How to Configure Network Static IP Address, Configuring Static IP address on CentOS 7.0 and RHEL 7.0, CentOS Server  Static and Manual IP address configuration.   If you don't have a Network Manager...
Arch Linux Installation Cheetsheet

Install Arch Linux with LVM on UEFI system

This tutorial describes all the steps required to install Arch Linux with LVM on UEFI system using GPT (GUID partition table). This tutorial uses LVM (Logical Volume Manager) for installation of...
Firewalld on RHEL7

Getting Started With Firewalld on RHEL7 and CentOS 7

Firewalld on RHEL7: I’m a person who is nuts about security. Seeing multiple layers of security being circumvented on a network is just against the reasons I’m security-centric all times. Some...

How to install VMware Tools in a Kali Linux 2.0 Guest Operating system

If you just downloaded Kali Linux 2.0 and want to run it on Vmware Workstation you'll have to install Vmware tools on the guest os to keep going. Doing so requires...

How to Auto-mount USB and External storage devices with rw in Arch Linux

On fresh installation of Arch Linux, i realized that every time i insert an External hard drive or USB stick, it will mount as read only. This need to be fixed...
Xen Virtualization

Getting started with Xen Virtualization On CentOS 7.x

Xen is an open-source baremetal hypervisor which allows you to run different operating systems in parallel on a single host machine. This type of hypervisor is normally referred to as type...

How To Reset Root And User Password In CentOS 7.x and RHEL 7.x

CentOS 7.0 and RHEL are common in most configuration settings.On CentOS, we previously talked about How to Set Static IP Address on CentOS 7,. If you forgot your RedHat or CentOs...