RHEL

OpenStack 15 (Stein) Lab Installation and Configuration Guide for Hetzner Root Servers

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Overview

In this article we will focus on installing and configuring OpenStack Stein using RDO and the packstack installer. RDO is a community platform around Red Hat’s Enterprise OpenStack Distribution. It allows you to test the latest OpenStack capabilities on a stable platform such as Red Hat Enterprise Linux (RHEL) or CentOS. This guide will take you through setting up Hetzner root server, preparing environment for OpenStack, installing the OpenStack Stein release, adding a floating ip subnet through OVS, configuring networking, security groups, flavors, images and are other OpenStack related services. The outcome is a working OpenStack environment based on the Stein release that you can use as a baseline for testing your applications using OpenStack capabilities. The installation will create an all-in-one deployment however you can use this guide to create a multi-node deployment as well.

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RHV 4.1 Lab Installation and Configuration Guide

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Overview

In this article we will setup a Red Hat Enterprise Virtualization (RHV) environment. RHV is based on upstream opensource projects KVM and Ovirt. RHV is composed of Red Hat Enterprise Linux (RHEL which includes KVM) and Red Hat Enterprise Virtualization Management (RHV-M), based on Ovirt. As of this article the latest version is RHV 4.1.

RHV has of late become very interesting to customers looking for alternatives to VMware. Below are a few reasons why you should be interested in RHV:

  • 100% opensource no proprietary code and no proprietary licencing.
  • Best Hypervisor for running Red Hat Enterprise Linux (RHEL).
  • Integrated and built with RHEL, uses SELinux to secure Hypervisor.
  • RHV leads VMware in SPECvirt performance and price per performance (last results 2013).
  • RHV scales vertically and performs extremely well on 4 or even 8 socket servers.
  • All features are included in RHV subscription, no licensing for extra capabilities.
  • KVM is future proof and is the defacto standard for OpenStack and modern virtualizations platforms.

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OpenStack Kilo Lab Installation and Configuration Guide

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Overview

In this article we will focus on installing and configuring OpenStack Kilo using RDO and the packstack installer. RDO is a community platform around Red Hat’s OpenStack Platform. It allows you to test the latest OpenStack capabilities on a stable platform such as Red Hat Enterprise Linux (RHEL) or CentOS. This guide will take you through installing the OpenStack Kilo release, configuring networking, security groups, flavors, images and are other OpenStack related services. The outcome is a working OpenStack environment based on the Kilo release that you can use as a baseline for testing your applications with OpenStack capabilities. A big thanks to Red Hatter, Goetz Rieger who contributed some of this content.
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Pacemaker – The Open Source, High Availability Cluster

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Overview

Pacemaker is a Open Source, High Availability cluster. Pacemaker and in general Linux clustering have been around for a very long time. Both matured greatly over the past 10 to 15 years.Today Pacemaker is a very simple streamlined bundle that includes the Pacemker clustering, fencing agents, resource agents and the heartbeat (corrosync). Pacemaker is available in Red Hat Enterprise Linux 7 as the High Availability option. In this article I will provide an overview of Pacemaker and a tutorial on how to setup a two-node pacemaker cluster for Apache using shared storage.

fence-example-fc
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Red Hat Enterprise Virtualization (RHEV) – Hypervisor Host Options

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Overview

Red Hat Enterprise Virtualization (RHEV) has two options for running a hypervisor host: 1) use the RHEV-H host 2) use Red Hat Enterprise Linux 6 or 7. Option 1 is similar to VMware ESXi, RHEV-H is an optimized OS for running Virtual Machines.  Option 2 allows you to configure a standard RHEL 6 or 7 host and add it to RHEV as a hypervisor. Continue reading →

Enterprise OpenStack: RHEL OSP

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Overview

As of today there are over eleven OpenStack services and more are coming. Each service has complete isolation from other services and that allows OpenStack to scale far beyond the reach of current computing platforms. However due to all these independent services, OpenStack can be very complicated to operationalize in enterprise environments.
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