Virtualization and Cloud

Jonathan Gershater

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Overview OpenStack is an Infrastructure as a Service offering. (see my prior post for an explanation of IaaS). OpenStack is an OpenSource project, founded by RackSpace, NASA and others. OpenStack can be deployed as a public or private cloud. The OpenStack projects are: CINDER, GLANCE, KEYSTONE, NOVA, QUANTUM, SWIFT. OpenStack Compute: (NOVA) Project NOVA, or OpenStack Compute, provisions and manages on-demand virtual machines and associated resources: CPU, Memory, Disk and Network. Virtual machines can be started, stopped, suspended, created and deleted, while network options for a virtual machine are static, DHCP, or IPv6. The virtual machines run on hypervisors such as XEN or KVM, but others are supported too - even VMware ESXi! Users and administrators use the GUI to request virtual machines, while developers may typically use an API. Security? Of course there are se... (more)

Installing OpenStack Keystone (Identity) Service | Part 1

Following my high level description of OpenStack, I now delve in the install of OpenStack This post is a manual install of OpenStack on Centos. Although the steps are detailed here:  http://docs.openstack.org/folsom/openstack-compute/install/yum/content/ my experience was that the output of each command results in text strings that are required in subsequent commands. Thus I have colour coded each text string output so that the text can be accurately used in subsequent commands. (This is post one of five; posts  two, three, four and five to follow will detail the install of the... (more)

Tutorial: Build a Private Cloud in Twenty Minutes

OpenStack is an open-source cloud framework for building on-demand Infrastructure as a Service. This tutorial in essence distills from this two-page set of instructions for setting up devstack on a single server primarily for use by developers. Hardware I used a DELL 1950 with 8 GB of RAM, internal hard-drives and two 1000 MB NICs. Download and Set Up Ubuntu Download Ubuntu 11.10 from here and burn to DVD Boot the server from the DVD and start the install. I installed the BASE SYSTEM and only one optional package, the OpenSSH Server. I named my server "ubuntu-server" I configured... (more)

Security Is Not the Only Barrier to Cloud Adoption

In his 90 minute keynote address at the AWS re:Invent conference, Andy Jassy quite unabashedly gave these reasons for using AWS versus a private cloud, (at the 32 minute mark) : So public cloud adoption should be a no-brainer, right? Oh wait, but Andy omitted security in the public cloud - how can I trust that my customers' sensitive data is secure in the public cloud? Been there, heard that before. I agree, the message wears thin that enterprise businesses are apprehensive to store sensitive customer data in the public cloud, and thus hesitant to adopt the cloud at all. (By th... (more)

Add Some Fuel to Quickly Deploy OpenStack

OpenStack is an OpenSource offering of Infrastructure as a Service (IaaS). For a review, here is a quick overview of IaaS and OpenStack. OpenStack is admittedly not trivial to manually install. I have started a manual install beginning with the Identity Service (keystone) here, other modules to follow. To simplify the deployment of OpenStack some organizations and vendors offer scripts or downloads: OpenStack offers a scripted install Dell open-sourced crowbar RackSpace offers Alamo Mirantis offers Fuel which I will cover in this article. Fuel from Mirantis, is basically a "DIY"... (more)