CIO Business Intelligence

MARCH 24, 2022

After all, entry-level pricing for mainframes in the z15 family running IBM Z operating systems is $250,000. IBM LinuxONE III systems run only Linux at prices starting at $135,000. We have seen the largest growth where clients augment [core] systems with open source — Red Hat Enterprise Linux and OpenShift,” Baker says.

IBM 144

IBM Banking Linux Open Source 144

Scott Lowe

FEBRUARY 16, 2017

The rise of the disaggregated network operating system (NOS) marches on: this time, it’s Big Switch Networks announcing expanded hardware support in Open Network Linux (ONL) , upon which its own NOS is based. I use OTR with Adium on OS X, and OTR with Pidgin on my Fedora Linux laptop.). Operating Systems/Applications.

Vmware 60

Vmware Linux Storage Load Balancer 60

Scott Lowe

JULY 17, 2020

Welcome to Technology Short Take #129, where I’ve collected a bunch of links and references to technology-centric resources around the Internet. This is a great read overall, but one sentence in particular really caught my eye: “30 years ago I was able to write a complete multitasking operating system in Z80 assembly code.

Linux 60

Linux Apple Operating Systems Policies 60

Scott Lowe

FEBRUARY 2, 2017

Michael Kashin has a great article on how Open Virtual Network (OVN, part of the Open vSwitch project) implements virtual networks in OpenStack. Operating Systems/Applications. Flatpak is a (relatively) new application packaging/sandboxing mechanism for Linux applications. Virtualization. Good advice.

Linux 60

Linux Network Virtualization IPv6 60

Scott Lowe

MARCH 2, 2017

I just noticed this article about using Nova flavor extra-specs to pass QoS data down to the virtualization layer. Operating Systems/Applications. Here’s a walkthrough to install Arch Linux on VirtualBox. Virtualization. Thinking of virtualizing Linux on Hyper-V? That’s handy. environments.

Linux 60

Linux Devops Open Source Virtualization 60

Linux Academy

SEPTEMBER 5, 2019

Deploy and manage virtual machines (VMs). Configure and manage virtual networks. We also cover various advanced topics in-depth, such as drift detection, cross-stack references, nested stacks, intrinsic functions, and condition functions. . Last month we put out over 45 new hands-on labs for our learners to work with.

Linux 14

Linux Course Microsoft Devops 14

Scott Lowe

NOVEMBER 17, 2016

Sorry for the long delay since the last Technology Short Take; personal matters have been taking quite the toll (if you follow me on Twitter, you’ll know to what personal matters I’m referring). Operating Systems/Applications. Jeff Geerling walks you through how to use Ansible via Windows 10’s Subsystem for Linux.

Linux 60

Linux Vmware Storage Network 60

The Verge

JULY 31, 2020

At first, Parallels Desktop will boot a full copy of Windows, allowing Microsoft’s operating system to sit side by side with Chrome OS and Android apps. They’ve done it with Mac and they’ve done it with Linux,” says Mistry. “We Windows apps running on Chrome OS. We worked with Parallels because they really have done this before.

Windows 133

Windows Google Operating Systems Microsoft 133

Scott Lowe

NOVEMBER 24, 2012

The key to making it work is the idea of a virtual resource. In Puppet, you are normally only allowed to define a resource once; you’d then apply that same resource against multiple systems. The Puppet Labs site does a much better job of explaining virtual resources. Realize the virtual user resources where needed.

Resources 121

Resources Virtualization Linux Open Source 121

Scott Lowe

FEBRUARY 28, 2022

However, I was not familiar with the term “bogons” to refer to such prefixes that should not be publicly routed. Rory McCune writes about a CVE in the Linux kernel that could allow for container escape in Kubernetes. Virtualization. Here’s hoping I’ve included some content below that you find useful!

Storage 79

Storage Hardware Policies Open Source 79

Scott Lowe

FEBRUARY 6, 2014

In the process, he muses about the value of configuration management tool chains such as Chef and Puppet in a world of “open switch” platforms such as Cumulus Linux. Speaking of Cumulus Linux…did you see the announcement that Dell has signed a reseller agreement with Cumulus Networks? Operating Systems/Applications.

Linux 60

Linux Vmware Storage Virtualization 60

Scott Lowe

JULY 22, 2013

The networking “old guard” likes to talk about how x86 servers and virtualization create network bottlenecks due to performance concerns, but as Ivan points out in this post , it’s rapidly becoming—or has already become—a non-issue. (By Operating Systems/Applications. Virtualization.

Vmware 106

Vmware Virtualization Network Linux 106

Scott Lowe

MARCH 1, 2019

VyOS is an open source Linux-based network operating system.). Operating Systems/Applications. Virtualization. I’m not sure how I missed that part 2 was published only 2 days later, so I’m rectifying that now. Go check out part 2. Servers/Hardware.

Operating Systems 60

Operating Systems Authentication Network Open Source 60

Scott Lowe

MARCH 12, 2021

Operating Systems/Applications. Virtualization. Via TecMint, James Kiarie explains how to use VirtualBox VMs on KVM in Linux. Unfortunately, the article only really focuses on disk conversion/migration and only has a passing reference to creating the rest of the VM configuration. Career/Soft Skills.

IPv6 60

IPv6 Network Storage Policies 60

Scott Lowe

JANUARY 18, 2017

Although Rowan doesn’t specifically mention it, this command relies on tools like tr , sort , and uniq , so I’m guessing it will only work on OS X/Linux/*BSD systems. Operating Systems/Applications. The post has a nice list of Linux replacements for popular OS X apps. Virtualization. Check this out.

Linux 60

Linux Network Hardware Dell 60

Scott Lowe

DECEMBER 6, 2013

A fan of network virtualization might also say that decomposing today’s complex physical networks into multiple simple logical networks on top of a simpler physical transport network—similar to Mike’s suggestion of converging on a smaller set of reference architectures—might also help. (Of Virtualization.

Vmware 60

Vmware Storage Linux Network 60

Scott Lowe

OCTOBER 27, 2017

Russell Bryant has a post on Open Virtual Network (OVN) , a project within the Open vSwitch (OVS) community. For what it’s worth, I’ve never tried NetBSD, but I have yet to run into any similar issues with any distribution of Linux I’ve tried. Operating Systems/Applications. Virtualization.

Firewall 60

Firewall Virtualization Network Storage 60

Linux Academy

MARCH 26, 2019

By adding free cloud training to our Community Membership, students have the opportunity to develop their Linux and Cloud skills further. Each month, we will kick off our community content with a live study group allowing members of the Linux Academy community to come together and share their insights in order to learn from one another.

Linux 12

Linux Course Devops Big Data 12

Scott Lowe

JANUARY 14, 2016

Cumulus VX, if you aren’t aware, is a community-supported virtual appliance version of Cumulus Linux aimed at helping folks preview and test “full-blown” Cumulus Linux (which, of course, requires compatible hardware). Operating Systems/Applications. Virtualization. Career/Soft Skills/Productivity.

Vmware 60

Vmware Devops Storage Linux 60

Scott Lowe

SEPTEMBER 10, 2014

I was able to hit two technical sessions yesterday and liveblogged both of them: Virtualizing the Network to Enable a Software-Defined Infrastructure. Bare Metal, Containers, and Virtualization: The Growing Choices for Cloud Applications. Similar Posts: IDF 2014: Virtualizing the Network to Enable SDI. Both were good sessions.

Intel 60

Intel Hardware Linux Virtualization 60

Scott Lowe

MAY 11, 2018

Mike Foley talks about new support for Virtualization Based Security (VBS) and Credential Guard in vSphere 6.7. Operating Systems/Applications. Thomas Graf explains why the Linux kernel community is replacing iptables with BPF. Virtualization. Sorry, I don’t have anything for you.

Network 60

Network Virtualization Open Source Vmware 60

Scott Lowe

JULY 22, 2013

The networking “old guard” likes to talk about how x86 servers and virtualization create network bottlenecks due to performance concerns, but as Ivan points out in this post , it’s rapidly becoming—or has already become—a non-issue. (By Operating Systems/Applications. Virtualization.

Vmware 60

Vmware Virtualization Network Linux 60

Scott Lowe

JANUARY 14, 2016

Cumulus VX, if you aren’t aware, is a community-supported virtual appliance version of Cumulus Linux aimed at helping folks preview and test “full-blown” Cumulus Linux (which, of course, requires compatible hardware). Operating Systems/Applications. Virtualization. Career/Soft Skills/Productivity.

Devops 60

Devops Vmware Storage Open Source 60

Scott Lowe

DECEMBER 17, 2015

This one is a bit older (refers to NSX 6.1 If you’d like to play around with Cumulus Linux but don’t have a compatible hardware switch, Cumulus VX is the answer. This article listing 20 Linux server hardening tips contains some basic tips but is nevertheless a very good resource for someone looking for Linux security recommendations.

Vmware 60

Vmware Linux Architecture Hardware 60

Scott Lowe

MAY 25, 2018

Ben Piper shares an example of automating Cumulus Linux with Ansible. Operating Systems/Applications. Michael Hausenblas has a nice kubectl in action post that provides a handy reference. Virtualization. Will Robinson walks readers through installing NTC Ansible. Battleship over BGP?

Devops 60

Devops Hardware Resources Cloud 60

Scott Lowe

MARCH 7, 2014

Craig Matsumoto of SDN Central helps highlight a recent (and fairly significant) development in networking protocols—the submission of the Generic Network Virtualization Encapsulation (Geneve) proposal to the IETF. This next round of hardware offloads seems targeted at network virtualization and related technologies.

Virtualization 60

Virtualization Hardware Intel Vmware 60

Scott Lowe

SEPTEMBER 3, 2013

Art Fewell takes a deeper look at the increasingly important role of the virtual switch. Even so, this Q&A session with Martin Casado on managing physical and virtual worlds in parallel might be worth going through the hassle. Operating Systems/Applications. Virtualization. Networking. This looks interesting.

Vmware 60

Vmware Data Center Storage Disaster Recovery 60

Scott Lowe

MARCH 10, 2015

I highly recommend you read the entire post, but in short the five skills Matt recommends are software skills (which includes configuration management and software development tools like Git ), Linux, deep protocol knowledge, hypervisor and container networking, and IPv6. Operating Systems/Applications. What does this mean?

Vmware 60

Vmware Linux Hardware Software Development 60

Scott Lowe

DECEMBER 2, 2013

This post, by the way, was sparked in part by a comment on my article on using GRE tunnels with OVS , in which the reader asked: “Is there a way to configure bare Linux (Ubuntu)…with OVS installed…to serve as a tunnel endpoint…?” See my introductory post on Linux policy routing if you need more information.

Transportation 66

Transportation Linux Network Virtualization 66

Scott Lowe

OCTOBER 23, 2013

Nick Buraglio has put together a basic reference OpenFlow controller VM —this is a KVM guest with CentOS 6.3 Operating Systems/Applications. Virtualization. Visit the site for more information on virtualization, servers, storage, and other enterprise technologies. with the Floodlight open source controller.

Vmware 60

Vmware Network Virtualization Storage 60

Galido

MARCH 25, 2019

The tests created can then be executed using most modern web browsers in different operating systems such as Windows, Linux and OS X. Reference to DOM objects based on ID, name or through XPath. What you should need are half a dozen virtual machines, an iPhone and an Android smartphone.

Tools 84

Tools Applications Programming Mobile 84

ForAllSecure

FEBRUARY 23, 2021

Vamosi: In security, we refer to testing done on the inside, maybe even having access to the source code, as white box testing--the application and network information is available to the tester. Vamosi: There are at least two complete operating systems available for pentesters. And, in the middle, grey box testing. So anecdote.

Network 52

Network Applications Security Operating Systems 52

ForAllSecure

FEBRUARY 23, 2021

Vamosi: In security, we refer to testing done on the inside, maybe even having access to the source code, as white box testing--the application and network information is available to the tester. Vamosi: There are at least two complete operating systems available for pentesters. And, in the middle, grey box testing. So anecdote.

Network 52

Network Applications Security Operating Systems 52

Scott Lowe

SEPTEMBER 12, 2013

This is session COMS002, titled “The Future of Software-Defined Networking with the Intel Open Network Platform Switch Reference Design.” ” The speakers are Recep Ozdag, a PME with Intel, and Gershon Schatzberg, a PLM with Wind River Systems. The first concept that Recep discusses is network virtualization.

Intel 60

Intel Load Balancer Architecture Virtualization 60

Scott Lowe

MARCH 23, 2017

Ivan Pepelnjak is best known for his deep networking expertise, but a recent article of his focused more on OpenStack —in particular, some of the “lessons learned” via Paddy Power Betfair’s OpenStack Reference Architecture whitepaper. Operating Systems/Applications. Virtualization. My takeaway?

Open Source 60

Open Source Storage Vmware Network 60

Linux Academy

MAY 15, 2020

First, I want to acknowledge that there is a big difference between Linux and Windows containers. Linux containers have been around for many decades, in one form or another. The Linux operating system naturally lent itself to taking advantage of containers using namespaces and control groups (cgroups). Why Windows?

Windows 129

Windows Linux Architecture Virtualization 129

Scott Lowe

SEPTEMBER 5, 2013

Given my previous role at EMC (involved in storage) and my current role at VMware focused on network virtualization (which encompasses SDN), I was quite curious. For example, their product runs natively as an agent/daemon/service on various UNIX platforms, various Linux distributions, and all recent versions of Windows Server.

Meeting 62

Meeting Storage Hardware Network 62