Virtualization and Cloud

Jonathan Gershater

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Following my single server installation of RDO OpenStack using PackStack, here is my install of OpenStack across three nodes. What's key here is the answer files used with packstack. For a single node its trivial since you just accept nearly all the defaults. A distributed install requires a bit of planning. First I installed on two nodes, using packstack from one node (sudo packstack --answer-file=/root/grizzly_openstack.cfg) The answer file for this installation is here, it specifies the location of each component: cinder on one server (.110) with this line: # The IP address of the server on which to install Cinder CONFIG_CINDER_HOST= and keystone, swift, nagios, nova, horizon and quantum on a second server (.29) Initial install looked like this:   Now, to add a second compute (NOVA) node to the installation, I ran packstack (sudo packstack --answer-f... (more)

Overview of the OpenStack Cloud

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 ... (more)

Easy Install of Cloudstack on Defunct Hardware for a Home Lab

To learn more about Cloud IaaS offerings, I painlessly setup Cloudstack, from Citrix, on two (outdated and defunct) DELL Optiplex 740 desktop computers. Each desktop is configured with 8GB of memory and the processors are VT compatible (meaning they can run virtualization technology software – a hypervisor). At first attempt, the Cloudstack software would not recognize the internal disk drives. Thinking that my old hardware would not run cloudstack, I researched the non-descript error and decided that the installer was not able to detect the disks because of the pre-existing soft... (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)

The Fundamental Flaw with LinkedIn Connections

Assumption A first-degree direct LinkedIn connection implies that the two parties know each well. Problem Using this assumption, two unconnected LinkedIn users attempt to connect via an intermediary. What often happens is that the first degree connections are in fact very weak connections, and thus of no use to the third party attempting to connect via the intermediary. Example I log into LinkedIn and would like an introduction to Brent. I view Brent's profile and notice that his first degree connection, Brian, is also a first degree connection with me. So I ask Brian for an int... (more)