Investigating a resize failure of a guest Windows virtual disk in a VirtualBox environment.

Debugging a simple file transfer failure–a look at .bash_profile and .bashrc.

Supernova is a command-line Linux tool for managing multiple OpenStack Nova environments.

The following are helpful tools and commands to diagnose an SSH connectivity issue on a RHEL and/or CentOS 7 server with SELinux enabled.

The following is an outline of a process for handling initramfs build failures due to low free space on the /boot partition.

After manually migrating several virtual machine disks (.vmdk) to a new pool of storage, the following warning surfaced.

Basic packet capture and analysis of DNS queries on a Linux operating system, using tcpdump, dumpcap, and tshark.

This article explores Vagrant automation and VirtualBox networking (NAT/Bridging) configuration fundamentals on a Microsoft Windows operating system host.

During the configuration of the Keystone identity service on an Ubuntu 14.04.2 LTS host, I observed a missing dependency which is not documented within the generic OpenStack Kilo documentation.

Following an installation of Ubuntu 14.04 LTS on a server using an Intel Xeon E3 chip, I observed that CPU performance was inconsistent with the reference specification.