Author Archives: Brian Seltzer

About Brian Seltzer

Author of BehindTheRacks.com and ITAdminTools.com. Data Center Architect with 25 years in the IT world. Windows, Linux, VMware, Storage, Blade Servers, and all big things taking up space on the raised floor. Follow Brian on Twitter @ITAdmnTools

OpenStack Newton – Quick Install – CentOS 7

This article shows how to quickly deploy OpenStack Newton on CentOS 7 using a single python script. The script follows the steps in the official OpenStack documentation. The idea is simply to automate those steps to avoid the time, effort, confusion and mistakes of performing the steps by hand. The script installs the core OpenStack services… Read More »

OpenStack Juno – Active Directory Integration

This post explains how to setup OpenStack Juno to authenticate against Active Directory. Many organizations use Microsoft Active Directory as their central identity and access management platform. We can configure OpenStack to use Active Directory to authenticate users, and to define projects and roles. This post shows how to setup the necessary objects in Active… Read More »

OpenStack Juno Scripted Install with Neutron on CentOS 7

Note: the are newer versions of this article: OpenStack Newton – Quick Install on CentOS 7 and also Scripted Installation of OpenStack Mitaka This article provides scripts to simplify the installation of OpenStack Juno, including the Neutron networking component, onto a minimum number of servers for testing. If you’ve done a manual install by following the official… Read More »

OpenStack Juno Scripted Installation on CentOS 7

Note: the are newer versions of this article: OpenStack Newton – Quick Install on CentOS 7 and also Scripted Installation of OpenStack Mitaka This article shows how to install OpenStack Juno on CentOS 7 with a couple of scripts. If you’ve manually installed OpenStack by following the official documentation, you know that there are many steps: adding… Read More »

The Truth About Deduplication

I recently went to a meeting with a potential customer, and we were talking about backup solutions. One of his questions was, “what dedup ratio do you get with your solution?”. I gave him the classic, yet entirely accurate, consultant’s response. It depends. Nowadays, many backup solutions make use of deduplication technology to efficiently store… Read More »

OpenStack High Availability – Heat Orchestration Service

In the last few articles, we built the highly available OpenStack Icehouse core services. Now we will add the Heat orchestration service. This continues our high availability series: In the previous article, we built two controllers, which are: icehouse1 (192.168.1.35) icehouse2 (192.168.1.36) We will now install the Heat packages on these controllers. First we install… Read More »