Scott Lowe

JANUARY 27, 2023

Back in October of last year, Tom Hollingsworth weighed in on Hedgehog , the networking company that has set out to commercialize SONiC, a Linux-based NOS used extensively in Azure. Servers/Hardware What do you think of the ThinkPhone ? Ah, the bygone sounds of yesteryear …what a blast from the past!

Programming 90

Programming Open Source Cloud Devops 90

Scott Lowe

OCTOBER 23, 2020

” Ivan Pepelnjak attempts to answer the question, “How much do I need to know about Linux networking?” ” Speaking of Linux networking…Marek Majkowski of Cloudflare digs deep into conntrack , used for stateful firewalling functionality. Servers/Hardware. Programming. That’s all for now, folks!

Open Source 60

Open Source Vmware Disaster Recovery Linux 60

Scott Lowe

NOVEMBER 25, 2020

Uh oh… more hardware exploits. Adrian Hornsby shows how to use AWS Systems Manager Automation to perform chaos engineering experiments. You may have heard of eBPF, the Linux technology that is reshaping Linux applications (and in some ways reshaping Linux itself). Cloud Computing/Cloud Management.

Linux 60

Linux Vmware Open Source Examples 60

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. Servers/Hardware. I use OTR with Adium on OS X, and OTR with Pidgin on my Fedora Linux laptop.).

Vmware 60

Vmware Linux Storage Load Balancer 60

The Verge

SEPTEMBER 23, 2020

iPad hardware. Finally, the same hardware means that the iPad has the same support for the Apple Pencil — the first-generation $99 Apple Pencil, I should point out, with its weird Lightning charging connector and easy-to-lose cap. But the most important spec in the iPad is the storage on the base $329 model: an embarrassingly low 32GB.

Apple 127

Apple Storage Hardware Windows 127

Scott Lowe

NOVEMBER 7, 2014

This post by Matt Oswalt—the first in a series, apparently—provides a great introduction to 5 development tools for network engineers. It was good to read this post on Cumulus Linux first impressions by Jeremy Stretch. Servers/Hardware. I hope you are able to glean something useful. Networking. Interesting thought.

Vmware 69

Vmware Linux Storage Virtualization 69

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. Servers/Hardware. It may prove useful to others who are also seeking to improve their knowledge of MPLS. Thanks Jason!

Vmware 60

Vmware Linux Storage Hardware 60

Scott Lowe

JANUARY 18, 2017

Servers/Hardware. Stay tuned for a quick review of the hardware once it arrives. 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. The post has a nice list of Linux replacements for popular OS X apps.

Linux 60

Linux Network Hardware Dell 60

Scott Lowe

APRIL 21, 2016

Servers/Hardware. This Yelp Engineering blog post talks about one of these unintended side effects (processes running as PID 1 are treated differently by the Linux kernel). GitHub recently changed their storage architecture, using a Git-based solution called DGit. Nothing this time around. Maybe next time!

Vmware 60

Vmware Linux Hardware Network 60

Scott Lowe

JANUARY 7, 2016

Bart shares some details about his journey from being a Microsoft-centric infrastructure engineer to what he calls a cloud-native full-stack engineer. His journey started in June 2014 as a result of the Microsoft announcement regarding support for Linux and Kubernetes on Azure—this really indicated a shift in the industry.

Devops 60

Devops Engineering Conference Operating Systems 60

Scott Lowe

MAY 25, 2017

Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks. Nicolas Michel has a good post on the transition from network engineer v1.0 to v2.0 , and some of the skillsets he believes network engineers must embrace moving forward. Servers/Hardware. Cloud Computing/Cloud Management.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

MAY 25, 2017

Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks. Nicolas Michel has a good post on the transition from network engineer v1.0 to v2.0 , and some of the skillsets he believes network engineers must embrace moving forward. Servers/Hardware. Cloud Computing/Cloud Management.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

MAY 17, 2019

Courtesy of Tigera, Alex Pollitt shares some guidelines on when Linux conntrack is no longer your friend. Servers/Hardware. Apparently Dell’s new docking stations support firmware updates via Linux. This article has good information on safely using /tmp and /var/tmp on systemd-powered Linux distributions.

Linux 60

Linux Dell Open Source Licensing 60

Scott Lowe

JUNE 2, 2016

Russ White tackles the issue of networking engineers needing to learn to code. Dmitri Kalintsev examines some options for addressing storage-related connectivity in NSX environments. Servers/Hardware. Anthony Burke has written a script that uses VMware NSX to protect VMware Log Insight instances. Is it necessary?

Vmware 60

Vmware Virtualization Linux Windows 60

Scott Lowe

APRIL 3, 2016

Alban Crequy has a post on using Linux queueing disciplines (qdiscs, for short) to help with testing application behavior under degraded network conditions. Cumulus Networks has added another hardware partner to its list of supported hardware partners; this time it’s Mellanox, as outlined in this SDx Central article.

Vmware 60

Vmware Network Linux Hardware 60

Scott Lowe

JANUARY 7, 2016

Bart shares some details about his journey from being a Microsoft-centric infrastructure engineer to what he calls a cloud-native full-stack engineer. His journey started in June 2014 as a result of the Microsoft announcement regarding support for Linux and Kubernetes on Azure—this really indicated a shift in the industry.

Devops 60

Devops Engineering Conference Operating Systems 60

Scott Lowe

FEBRUARY 2, 2017

In a bit of an older post from late summer 2016, Matt Oswalt outlines why network engineers should care about the network software supply chain. Servers/Hardware. Flatpak is a (relatively) new application packaging/sandboxing mechanism for Linux applications. John Kozej has a write-up on an NSX logical switch packet walk.

Linux 60

Linux Network Virtualization IPv6 60

Scott Lowe

DECEMBER 6, 2019

Servers/Hardware. Nothing this time around, although there may have been some hardware-related news coming out of re:Invent that I missed (such as new generations of AWS-designed chips being announced). A new VPN security flaw has been uncovered that affects a wide range of UNIX- and Linux-based systems. Virtualization.

Vmware 60

Vmware Network Linux Hardware 60

Scott Lowe

FEBRUARY 9, 2018

I particularly liked his (mini-)rant about how network automation can’t be only about making the network engineer’s life easier. Servers/Hardware. Michael Wittig shares some details on migrating to Amazon Linux 2. Ed Haletky has an updated Linux version of the VMware Software Manager. Virtualization.

Vmware 60

Vmware Linux Network Storage 60

Scott Lowe

FEBRUARY 11, 2021

Justin Pietsch Has a lengthy article on why network engineers need to focus on getting the network out of the way. Servers/Hardware. I recently mentioned on Twitter that I was considering building out a new Linux PC to replace my aging Mac Pro (it’s a 2012 model, so going on 9 years old). Cloud Computing/Cloud Management.

Vmware 60

Vmware Storage Study Network 60

Scott Lowe

MAY 3, 2013

I try to keep the information linked to data center technologies like networking, storage, virtualization, and the like, but occasionally other items slip through. The sentiment behind this post isn’t unique to networking (or networking engineers), but that was the original audience so I’m including it in this section.

Vmware 109

Vmware Storage Virtualization HP 109

Scott Lowe

JUNE 29, 2016

If you like geeking out over the hardware side of networking, you may find this Ars Technica article on the physical infrastructure of the global Internet to be an interesting read. (I Servers/Hardware. This is a highly technical article on scheduling in the Linux kernel , but it’s well worth reading. Virtualization.

Linux 60

Linux Network Hardware Vmware 60

Scott Lowe

DECEMBER 8, 2017

The first was on RESTful control of Cumulus Linux ACLs (this one isn’t actually sFlow-related); the second was on combining sFlow telemetry and RESTful APIs for visibility and control in campus networks. Servers/Hardware. Both articles are worth reviewing if hardware selection is an important aspect of your role.

Vmware 60

Vmware Linux Network Cloud 60

Scott Lowe

NOVEMBER 30, 2012

Both the hardware as well as the software have served me well. Instead, Apple’s engineers set out to design an operating environment that was tailored to the form factor. Visit the site for more information on virtualization, servers, storage, and other enterprise technologies. Macintosh iPhone Linux'

Operating Systems 131

Operating Systems Apple Applications Linux 131

Galido

JUNE 28, 2018

SSH: For Linux / Unix and MacOS systems. Installed will be a proprietary database, web server, report engine, notification system, and other features required for the system to function. As devices are discovered, probes will also detect the services and hardware it can monitor. Distributed monitoring. Detailed reports.

Network 60

Network LAN VOIP Licensing 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. Servers/Hardware.

Vmware 60

Vmware Linux Open Source Devops 60

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? Servers/Hardware.

Linux 60

Linux Vmware Storage Virtualization 60

Scott Lowe

MARCH 1, 2019

Daniel Dib has a great article on how network engineers need to evolve. I referenced part 1 of Ajay Chenampara’s series on the Ansible network-engine command parser back in Technology Short Take 102 (July of last year). VyOS is an open source Linux-based network operating system.). Servers/Hardware. Networking.

Operating Systems 60

Operating Systems Authentication Network Open Source 60

Scott Lowe

SEPTEMBER 10, 2014

The first one, on virtualizing the network, did highlight an important development regarding hardware offloads for Geneve, the next-generation network overlay encapsulation protocol. Intel announced yesterday that the new XL710 network adapters (which are 40Gbps adapters) will support Geneve hardware offloads. Closing Thoughts.

Intel 60

Intel Hardware Linux Virtualization 60

Scott Lowe

AUGUST 16, 2017

Miguel Gómez of Telefónica Engineering discusses maximizing performance in VXLAN overlay networks. Nicolas Michel has a good post on the transition from network engineer v1.0 to v2.0 , and some of the skillsets he believes network engineers must embrace moving forward. Servers/Hardware. Cloud Computing/Cloud Management.

Open Source 60

Open Source Network Linux Engineering 60

Scott Lowe

FEBRUARY 1, 2019

The recent announcement of their GraphQL-based Network Query Engine (NQE)—more information is available in this blog post —is also pretty interesting to me. Servers/Hardware. Jorge Castro shares some informal notes on using Clear Linux as an everyday DevOps/cloud-native/Kubernetes client. Virtualization.

Network 60

Network Resources Devops Vmware 60

Scott Lowe

OCTOBER 9, 2016

That prompted Cody Bunch to write this article on setting up a topology with BGP on Linux using the topology converter , which I’m now mentioning in this Technology Short Take. PowerShell on Cumulus Linux on a network switch? Are you a network engineer who wants to expand his or her automation skills, but doesn’t have the equipment?

Vmware 60

Vmware Case Study Linux Network 60

Scott Lowe

SEPTEMBER 27, 2019

Servers/Hardware. Of course, Linux folks have been doing things like this with Bash for quite a while… Puja Abbassi, a developer advocate at Giant Swarm, discusses the future of container image building by looking at some of the concerns with the existing “Docker way” of building images. Nothing this time around.

Load Balancer 60

Load Balancer Cloud Applications Vmware 60

Scott Lowe

MARCH 7, 2014

Servers/Hardware. Another interesting tidbit regarding hardware: it seems as if we are now seeing the emergence of another round of “hardware offloads.” This next round of hardware offloads seems targeted at network virtualization and related technologies. x86 marches on! See more details here.

Virtualization 60

Virtualization Hardware Intel Vmware 60

Scott Lowe

DECEMBER 17, 2015

If you’d like to play around with Cumulus Linux but don’t have a compatible hardware switch, Cumulus VX is the answer. Servers/Hardware. 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

APRIL 19, 2019

Milind Gunjan shares some tips for troubleshooting Linux bridged networking on a KVM host. Servers/Hardware. Tonis Tiigi has a write-up on experimenting with rootless Docker over on the Docker Engineering blog. Via Ivan Pepelnjak’s site, Albert Siersema shares some information on using Ansible to automate 802.1x

Open Source 60

Open Source Tools Policies Cloud 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. Servers/Hardware.

Vmware 60

Vmware Open Source Linux Devops 60