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Virtualization and Cloud

Jonathan Gershater

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Top Stories by Jonathan Gershater

In prior blog posts, I described Infrastructure as a Service (IaaS) and Platform as a Service (PaaS). To recap: If I use IaaS I get servers onto which I can load software and applications which I then maintain, though I don't need to maintain the hardware. I can customize the applications and software running on the servers, at will. If I use PaaS, I get a platform of ready to use web servers, application servers, databases etc. I write my own software application and host it at the PaaS provider. I maintain the software I write, but not the application servers, databases or hardware. I can customize the software I write, at will Finally, we reach the top of the stack: Software as a Service (SaaS). SaaS is simply software that I use for myself or my organization, but often with limited customization. Characteristics of SaaS: SaaS customers are provided with login cre... (more)

Installing RDO Grizzly on Centos Using Packstack

OpenStack is easily installed using a package called Packstack. Redhat is one of the primary contributors to packstack and my install experience is similar to the installation of RDO, described here The procedure is quite simple: Install Redhat, Fedora or Centos on one or more x86 servers. I installed the minimal Centos installation on a Dell 1950 Install and configure NTP - network time protocol # yum install ntp # chkconfig ntpd on # ntpdate pool.ntp.org # /etc/init.d/ntpd start Install the Fedora repo for grizzly # yum install -y http://rdo.fedorapeople.org/openstack/opensta... (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)

Identity Management Requirements for the Public Cloud

The Security for Cloud Computing: 10 Steps to Ensure Success white paper provides a practical reference to help enterprise information technology (IT) and business decision makers as they analyze and consider the security implications of cloud computing on their business. The paper includes a list of steps, along with guidance and strategies, designed to help these decision makers evaluate and compare security offerings in key areas from different cloud providers. The paper discusses the threats, technology risks, and safeguards for cloud computing environments, and provides the ... (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)