Scott Lowe

APRIL 6, 2017

Humair Ahmed of VMware shares some details on a new control plane resiliency feature recently added to VMware NSX: Controller Disconnected Operation (CDO) mode. Here’s a handy list of deprecated Linux network commands and their replacements. Konstantin Ryabitsev has a series going on securing a SysAdmin Linux workstation.

Vmware 60

Vmware Linux Storage Network 60

Scott Lowe

AUGUST 27, 2021

I have a fairly diverse set of links for readers this time around, covering topics from microchips to improving your writing, with stops along the way in topics like Kubernetes, virtualization, Linux, and the popular JSON-parsing tool jq. Michael Kashin shares the journey of containerizing NVIDIA Cumulus Linux. Networking.

Linux 90

Linux Load Balancer Malware Virtualization 90

Scott Lowe

JUNE 24, 2022

BPFDoor, as it is known, is a passive backdoor that allows threat actors to remotely connect to a Linux shell. Tetragon is Isovalent’s newly open-sourced security framework. I think the headline (“defeats ’the last line of security’”) is a bit sensationalist, but I guess that’s the world we live in.

Vmware 74

Vmware Linux Storage Virtualization 74

Scott Lowe

OCTOBER 8, 2021

There’s some networking stuff, a few security links, and even a hardware-related article. Jimmy Mankowitz talks in some detail about using NSX-T in vSphere with Tanzu to secure applications. Nice to see that work on getting Linux up and running and fully functional on Apple’s proprietary M1 chips is progressing well.

IPv6 97

IPv6 Storage Hardware Vmware 97

Scott Lowe

AUGUST 27, 2021

I have a fairly diverse set of links for readers this time around, covering topics from microchips to improving your writing, with stops along the way in topics like Kubernetes, virtualization, Linux, and the popular JSON-parsing tool jq along the way. Michael Kashin shares the journey of containerizing NVIDIA Cumulus Linux.

Linux 60

Linux Load Balancer Malware Virtualization 60

Scott Lowe

MAY 27, 2022

network virtualization). Is the relationship between network virtualization and service mesh closer than some folks might wish to admit? Researchers have uncovered a potential security flaw in Apple Silicon CPUs; more details in this 9to5Mac article. Virtualization. Servers/Hardware. Career/Soft Skills.

Virtualization 79

Virtualization Storage Network Programming 79

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.). Virtualization. Networking.

Vmware 60

Vmware Linux Storage Load Balancer 60

Scott Lowe

MARCH 17, 2016

At DevOps Networking Forum 2016, I had the opportunity to share a presentation on some Linux networking options. I recently came across a couple useful troubleshooting guides, one for Open vSwitch (OVS) and OpenStack Neutron and one for VMware NSX. Have fun reading! Networking. It’s a pretty interesting read, in my opinion.

Vmware 60

Vmware Linux Network Open Source 60

Scott Lowe

NOVEMBER 7, 2014

It was good to read this post on Cumulus Linux first impressions by Jeremy Stretch. I’m a fan of Cumulus, but I’m admittedly a Linux guy (see here ) so you might say I’m a bit biased. Jeremy is a “hard-core” networking professional, and so hearing his feedback on Cumulus Linux was, in my opinion, useful.

Vmware 69

Vmware Linux Storage Virtualization 69

Scott Lowe

JANUARY 28, 2016

The rise of Linux in importance in the networking industry continues, with Arista announcing enhancements to Arista EOS to support—among other things—Docker containers. As a partial counterpoint to the increased use/visibility of Linux in the networking industry, check out Ivan’s take on Dell’s OS10 announcement. Networking.

Vmware 60

Vmware Linux Open Source Devops 60

Scott Lowe

SEPTEMBER 8, 2023

Michael Kashin has a good post on source IP address selection in Linux. Security Michael Tsai weighs in on the Microsoft signing key that was stolen, sharing several links with commentary on this matter. It was, therefore, very satisfying to see not one but two Velero-related posts emerge recently from the VMware blogging community.

Vmware 74

Vmware Network Hardware Cloud 74

Scott Lowe

JUNE 18, 2021

Via Ivan Pepelnjak, I was pointed to Jon Langemak’s in-depth discussion of working with Linux VRFs. Patrick Kremer walks through using Postman to implement BGP route filtering with VMware Cloud on AWS. John Gruber’s post on “Secure Intent” on Apple devices was, for me at least, an informative read.

Vmware 60

Vmware Hardware Load Balancer Apple 60

Network World

MARCH 20, 2017

The security researchers assembled at the Pwn2Own 2017 hacking competition , sponsored by Trend Micro, and occasionally grouped together, then performed essentially zero-day exploits (at least by the rules, heretofore unknown) on your favorite stuff, such as Windows, MacOS and Linux.

Vmware 60

Vmware Linux Trends Windows 60

Scott Lowe

AUGUST 11, 2016

In this post you’ll find a collection of links to articles discussing the major data center technologies—networking, hardware, security, cloud computing, applications, virtualization…you name it! (If Numan Siddique describes the native DHCP support available in OVN (Open Virtual Network). Virtualization. Networking.

Vmware 60

Vmware Hardware Storage Linux 60

Scott Lowe

NOVEMBER 25, 2020

You may have heard of eBPF, the Linux technology that is reshaping Linux applications (and in some ways reshaping Linux itself). Something about Linux, and Fedora in particular, just keeps drawing me back. What a time to be alive: Microsoft has its own Linux distribution. Virtualization. Good stuff!

Linux 60

Linux Vmware Open Source Examples 60

Scott Lowe

JUNE 2, 2016

Anthony Burke has written a script that uses VMware NSX to protect VMware Log Insight instances. The first article provides a blueprint for migrating applications to VMware NSX ; the second article supplies some tips for creating filtering policies in VMware NSX. Virtualization. Networking. Is it necessary?

Vmware 60

Vmware Virtualization Linux Windows 60

Scott Lowe

OCTOBER 8, 2021

There’s some networking stuff, a few security links, and even a hardware-related article. Jimmy Mankowitz talks in some detail about using NSX-T in vSphere with Tanzu to secure applications. Nice to see that work on getting Linux up and running and fully functional on Apple’s proprietary M1 chips is progressing well.

IPv6 60

IPv6 Storage Hardware Vmware 60

Scott Lowe

AUGUST 8, 2014

Welcome to Technology Short Take #43, another episode in my irregularly-published series of articles, links, and thoughts from around the web, focusing on data center technologies like networking, virtualization, storage, and cloud computing. Ivan Pepelnjak asks the question, “Is OpenFlow the best tool for overlay virtual networks?”

Vmware 60

Vmware Linux Virtualization Network 60

Scott Lowe

APRIL 15, 2022

Although Linux is often considered to be superior to Windows and macOS with regard to security, it is not without its own security flaws. I, personally, would posit that Linux can be more secure than other platforms, but it requires proper configuration and can still be undone by a loose nut behind the keyboard.

Linux 74

Linux Load Balancer IPv6 Licensing 74

Storage IO Blog

JANUARY 12, 2014

Finding a Windows physical disk, SSD or storage system device name So you may know and how to find out the more familiar Windows storage device (Solid State […].

Storage 62

Storage Windows Vmware Backup 62

Scott Lowe

JUNE 18, 2017

Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches). Colin Lynch shares some details on his journey with VMware NSX (so far). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX.

Windows 60

Windows Vmware Virtualization Linux 60

Scott Lowe

JUNE 18, 2017

Sjors Robroek describes his nested NSX-T lab that also includes some virtualized network equipment (virtualized Arista switches). Colin Lynch shares some details on his journey with VMware NSX (so far). I wouldn’t take this information as gospel, but here’s a breakdown of some of the IPv6 support available in VMware NSX.

Windows 60

Windows Vmware Virtualization Linux 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 Virtualization. Seriously.). Here’s one idea. Servers/Hardware.

Vmware 106

Vmware Virtualization Network Linux 106

Scott Lowe

AUGUST 5, 2014

I have a total of four session proposals submitted this year: MIT and VMware: Taking IT to OpenStack Private Cloud. OpenStack for VMware Operators. Policy and Security in the “Goldilocks” Zone. VMware Sessions. Virtualization Congress 2009 Sessions. My Sessions. OpenStack Design Guide Panel.

Vmware 60

Vmware Virtualization Policies Linux 60

Scott Lowe

DECEMBER 8, 2016

This is an interesting project to watch, I think—it’s porting OVN (Open Virtual Network) from a “traditional” OvS back-end to an IOVisor-based back-end (IOVisor implements the data plane in eBPF). Jake Bennett discusses strengthening your AWS security posture by protecting application credentials and rotating EC2 and IAM keys.

Vmware 60

Vmware Storage Intel Virtualization 60

Scott Lowe

JANUARY 19, 2018

This is pretty cool: a WYSIWYG topology designer for VMware NSX. Barry Peddycord shares an update on Ansible support for the Cumulus Linux NCLU. The VMware Cloud-Native Apps group has a breakdown of some of the new features/functionality found in the 1.9 Klaus Aschenbrenner shares how he designed his VMware vSAN-based home lab.

Vmware 60

Vmware Open Source Linux Cloud 60

Linux Academy

MARCH 15, 2019

I had the pleasure of speaking with one of our amazing students about his experience training for AWS certifications on Linux Academy. My job encompasses supporting Linux and VMware on physical servers. I think we have close to 1600 virtual instances at any given time, spread across two data centers separated by 10 miles.

Linux 60

Linux Training Course Vmware 60

Scott Lowe

JANUARY 27, 2023

I’ve got another collection of links to articles on networking, security, cloud, programming, and career development—hopefully you find something useful! Security Adrian Mouat reviews some of the security-focused changes in Go 1.20. Welcome to Technology Short Take #164! to version 8.0.

Programming 90

Programming Open Source Cloud Devops 90

Scott Lowe

OCTOBER 28, 2022

Alejandro Villanueva shares 26 AWS security best practices to adopt in production. William Lam writes about the beta for VMware Cloud Consumption Interface (CCI). Virtualization. Nicholas Schmidt takes on using cloud-init with vSphere , using openSUSE as the Linux platform. Using Auth0? Cloud Computing/Cloud Management.

Open Source 79

Open Source Apple Vmware Cloud 79

Scott Lowe

NOVEMBER 30, 2018

Christian Kellner provides a brief reminder that not all USB-C ports are Thunderbolt ports, and updates everyone on the status of bolt (Linux utility for working with Thunderbolt ports and peripherals). Virtualization. AWS Outposts is Amazon’s move into the hybrid cloud market.

Vmware 60

Vmware Authentication Virtualization Storage 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

NOVEMBER 17, 2016

Cumulus Networks recently introduced the Cumulus Linux Network Command Line Utility (NCLU) , which provides a more unified front-end to configuring switches running Cumulus Linux. Marcos Hernandez has a pair of great articles on integrating next-generation security services into OpenStack by leveraging NSX (see part 1 and part 2 ).

Linux 60

Linux Vmware Storage Network 60

Scott Lowe

JULY 21, 2016

First up, there’s a great article on using IPVLAN with Docker and Cumulus Linux (with a tie back to sFlow, naturally!). Here’s a walkthrough by Cody Bunch on setting up BGP on Linux with Cumulus Quagga. These posts are a bit slanted toware VMware vSphere environments, but very detailed, very thorough, and very useful.

Vmware 60

Vmware Linux Storage Hardware 60

Scott Lowe

FEBRUARY 9, 2018

Sam McGeown has a nice diagram of the communications channels between the various VMware NSX components. I’m not really sure if this belongs in networking or not (how does one classify OS kernel-level work on networking and security?), Security is a many-faceted area, and one facet is appropriately protecting credentials.

Vmware 60

Vmware Linux Network Storage 60

Scott Lowe

JANUARY 28, 2016

The rise of Linux in importance in the networking industry continues, with Arista announcing enhancements to Arista EOS to support—among other things—Docker containers. As a partial counterpoint to the increased use/visibility of Linux in the networking industry, check out Ivan’s take on Dell’s OS10 announcement. Networking.

Vmware 60

Vmware Open Source Linux Devops 60

Scott Lowe

MAY 22, 2015

Welcome to Technology Short Take #51, another collection of posts and links about key data center technologies like networking, virtualization, cloud management, and applications/operating systems. I’m pretty sure I’ve mentioned Open Virtual Network (OVN) here before, as I’m pretty jazzed about the work going on with this project.

Vmware 60

Vmware Network Virtualization IPv6 60

Scott Lowe

DECEMBER 29, 2016

Andrey Khomyakov shares some information on automating the setup of whitebox switches running Cumulus Linux in part 2 of this series on learning network automation. James Green shares some information on Docker Bench , a tool designed to help secure Docker environments. Alpine Linux 3.5 Virtualization. Servers/Hardware.

Vmware 60

Vmware Linux Open Source Data Center 60