Scott Lowe

NOVEMBER 25, 2020

Networking. Isovalent—the company behind Cilium, the eBPF-powered networking solution for Kubernetes clusters—just launched with a $29M Series A round of funding. Open source has become so critical to so many aspects of our computing infrastructure. Uh oh… more hardware exploits. Good stuff!

Linux 60

Linux Vmware Open Source Examples 60

Scott Lowe

JUNE 18, 2021

The collection of links shared below covers a fairly wide range of topics, from old Sun hardware to working with serverless frameworks in the public cloud. Networking. Via Ivan Pepelnjak, I was pointed to Jon Langemak’s in-depth discussion of working with Linux VRFs. Servers/Hardware. Operating Systems/Applications.

Vmware 60

Vmware Hardware Load Balancer Apple 60

Scott Lowe

SEPTEMBER 8, 2023

Networking Brent Salisbury shares some code intended to help you “ChatGPT your project documentation.” This is a slightly older article (from January of this year) in which Josh Saul of Hedgehog pays homage to the achievements of Cumulus Networks in the open networking movement. What about preventing it?

Vmware 74

Vmware Network Hardware Cloud 74

Scott Lowe

APRIL 15, 2022

Networking. Want to understand kube-proxy , a key part of Kubernetes networking, a bit better? Xavier Avrillier walks readers through using Antrea (a Kubernetes CNI built on top of Open vSwitch—a topic I’ve touched on a time or two) to provide on-premise load balancing in Kubernetes. Servers/Hardware.

Linux 74

Linux Load Balancer IPv6 Licensing 74

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! Networking William Morgan’s 2022 service mesh recap captures some of the significant events in service mesh in 2022, although through a Linkerd-colored lens.

Programming 90

Programming Open Source Cloud Devops 90

Scott Lowe

OCTOBER 5, 2018

Networking. Brian Boucheron provides a great article on how to inspect and debug Kubernetes network primitives. Servers/Hardware. The big news in the hardware space recently was the article regarding the purported Chinese hardware supply chain attack. This has generated a lot of discussion. Probably not.

Hardware 60

Hardware Open Source Vmware Linux 60

Scott Lowe

JANUARY 15, 2021

Networking. Servers/Hardware. The popular open source cryptography library known as Bouncy Castle has uncovered a severe authentication bypass vulnerability. Heidi Howard and Ittai Abraham illustrate some of the challenges of the Raft consensus protocol when there is a network partition. Compute safely.

Linux 60

Linux Firewall Open Source Vmware 60

Scott Lowe

MARCH 2, 2020

Networking. Said van de Klundert has a post on screen scraping basics for network engineers. For network engineers just getting started with network automation, I suspect that the information shared here may prove quite useful. For readers who may be new to networking, Daniel Wray has a write-up on network cabling.

Linux 60

Linux Windows Hardware Network 60

Scott Lowe

JANUARY 28, 2016

Networking. 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. See this SDx Central article or this Network World article for more details.). Servers/Hardware. Per the README.md

Vmware 60

Vmware Linux Open Source Devops 60

Scott Lowe

MAY 25, 2017

Networking. I enjoyed Dave McCrory’s series on the future of the network (see part 1 , part 2 , part 3 , and part 4 —part 5 hadn’t gone live yet when I published this). Michael Kashin has a handy little tool that functions like ssh-copy-id on servers, but for network devices (leveraging Netmiko). Servers/Hardware.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

MAY 25, 2017

Networking. I enjoyed Dave McCrory’s series on the future of the network (see part 1 , part 2 , part 3 , and part 4 —part 5 hadn’t gone live yet when I published this). Michael Kashin has a handy little tool that functions like ssh-copy-id on servers, but for network devices (leveraging Netmiko). Servers/Hardware.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

JANUARY 21, 2022

Networking. Servers/Hardware. The story of a developer deliberately polluting their open source projects—as outlined here for the “colors.js” Dennis Felsing shares some thoughts on switching to macOS after 15 years on Linux. BIOS updates without a reboot , and under Linux first? Yes please!

Load Balancer 90

Load Balancer Linux Intel Cloud 90

Scott Lowe

MAY 27, 2022

Networking. network virtualization). Is the relationship between network virtualization and service mesh closer than some folks might wish to admit? Servers/Hardware. now has a follow-up exploit that exposes Aruba and Avaya network switches to remote code execution. I certainly hope not! Kubernetes 1.24

Virtualization 79

Virtualization Storage Programming Network 79

Scott Lowe

MAY 17, 2019

Networking. 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. These look interesting, but be aware that they are not licensed with an open source license.

Linux 60

Linux Dell Open Source Licensing 60

Scott Lowe

DECEMBER 29, 2016

Networking. Ajay Chenampara has some observations about running Ansible at scale against network devices. 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. Servers/Hardware. Alpine Linux 3.5

Vmware 60

Vmware Linux Open Source Data Center 60

Scott Lowe

JANUARY 28, 2016

Networking. 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. See this SDx Central article or this Network World article for more details.). Servers/Hardware. Per the README.md

Vmware 60

Vmware Open Source Linux Devops 60

Scott Lowe

MARCH 17, 2016

Networking. At DevOps Networking Forum 2016, I had the opportunity to share a presentation on some Linux networking options. Here’s another topic that came up at the recent DevOps Networking Forum: Spotify’s SDN Internet Router (SIR). Here’s some information on Nuage Networks’ experimental Docker Network plugin.

Vmware 60

Vmware Linux Network Open Source 60

Scott Lowe

FEBRUARY 28, 2022

Networking. Koyeb describes , at a high level, the global networking stack for their serverless platform. Components involved include the open source Kuma service mesh (in turn leveraging Envoy), anycast BGP, and mutual TLS (mTLS). Servers/Hardware. Seriously.). Cloud Computing/Cloud Management. Virtualization.

Storage 79

Storage Hardware Policies Open Source 79

Scott Lowe

DECEMBER 6, 2019

Networking. Brian Linkletter has a post on how to run the Antidote network emulator on KVM for better performance. Antidote, as I understand it, is the network emulator that runs the labs on the NRELabs web site (which is another cool thing in and of itself). Servers/Hardware. Cloud Computing/Cloud Management.

Vmware 60

Vmware Network Linux Hardware 60

Scott Lowe

JANUARY 14, 2016

Networking. 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). Using Python and Netmiko for network automation is the topic of this post by Colin McAlister.

Vmware 60

Vmware Devops Storage Linux 60

Scott Lowe

DECEMBER 6, 2013

Networking. In this post on why networking needs a Chaos Monkey , Mike Bushong applies to the terms to networks—a snowflake network is an intricately crafted network that is carefully tailored to utilize a custom subset of networking features unique to your environment. Here’s a good source.

Vmware 60

Vmware Storage Linux Network 60

Scott Lowe

DECEMBER 27, 2019

Networking. Servers/Hardware. Ahmet Alp Balkan talks about how the Knative Serving component addresses some key networking challenges within Kubernetes. Cole Atkinson discusses the fact that osxfuse is no longer open source , and the ramifications of this development on open source in general.

Open Source 60

Open Source Vmware Authentication Storage 60

Scott Lowe

NOVEMBER 7, 2014

Networking. This post by Matt Oswalt—the first in a series, apparently—provides a great introduction to 5 development tools for network engineers. Matt also recently posted part 4 (of 5) in his series on SDN protocols; this post covers OpFlex and declarative networking. Servers/Hardware. Interesting thought.

Vmware 69

Vmware Linux Storage Virtualization 69

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 Networking. Numan Siddique describes the native DHCP support available in OVN (Open Virtual Network). Version 2.0

Vmware 60

Vmware Hardware Storage Linux 60

Scott Lowe

AUGUST 16, 2017

Networking. I enjoyed Dave McCrory’s series on the future of the network (see part 1 , part 2 , part 3 , and part 4 —part 5 hadn’t gone live yet when I published this). Michael Kashin has a handy little tool that functions like ssh-copy-id on servers, but for network devices (leveraging Netmiko).

Open Source 60

Open Source Network Linux Engineering 60

Scott Lowe

JANUARY 19, 2018

Networking. Matt Klein breaks down service mesh components , using terms networking professionals know well, like “data plane” and “control plane.” ” Those familiar with networking concepts will identify well with the ideas in this article, I think. Servers/Hardware. Nothing this time around.

Vmware 60

Vmware Open Source Linux Cloud 60

Scott Lowe

APRIL 19, 2019

Networking. Part 2 of Stark and Wayne’s container-to-container networking for Cloud Foundry and Kubernetes dig deep into CNI workings. Milind Gunjan shares some tips for troubleshooting Linux bridged networking on a KVM host. Milind Gunjan shares some tips for troubleshooting Linux bridged networking on a KVM host.

Open Source 60

Open Source Tools Policies Cloud 60

Scott Lowe

FEBRUARY 9, 2018

Networking. Matt Oswalt tackles the idea of “intent-driven” or “intent-based” networking—all the rage right now—and outlines how something like this must interact with domains outside of networking in order to be effective. Servers/Hardware. Nothing this time around (sorry!).

Vmware 60

Vmware Linux Network Storage 60

Scott Lowe

MARCH 2, 2017

Networking. Skydive is (in the project’s own words) an “open source real-time network topology and protocols analyzer.” Servers/Hardware. Here’s a walkthrough to install Arch Linux on VirtualBox. Here’s a list of some open source Docker-related tools that developers may find useful. See here.).

Linux 60

Linux Devops Open Source Virtualization 60

Scott Lowe

MARCH 1, 2019

Networking. Daniel Dib has a great article on how network engineers need to evolve. The network isn’t going away, it’s just changing. 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). Servers/Hardware.

Operating Systems 60

Operating Systems Authentication Network Open Source 60

Scott Lowe

SEPTEMBER 3, 2014

Networking. To help resolve this issue, Cumulus Networks (and possibly Metacloud, I’m not sure of their involvement yet) has release an open source project called vxfld. I’d love to hear from more networking pros (please disclose company affiliations) about their thoughts on this matter.

Linux 60

Linux Network Vmware Disaster Recovery 60

Scott Lowe

JANUARY 14, 2016

Networking. 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). Using Python and Netmiko for network automation is the topic of this post by Colin McAlister.

Devops 60

Devops Vmware Storage Open Source 60

Scott Lowe

JANUARY 30, 2017

Without further ado, here’s the list for 2017: Finish the network automation book. One way or another, the network automation book I’m writing with Jason Edelman and Matt Oswalt is getting finished in 2017. Launch an open source book project. This is something I’ve been tossing around for a while now.

Open Source 60

Open Source Course Video Dell 60

Scott Lowe

JULY 5, 2019

Networking. Servers/Hardware. Although I’ve by and large moved away from Apple hardware (I still have a MacBook Pro running macOS that sees very little use, and a Mac Pro running Fedora), I did see this article regarding a new keyboard for the MacBook Air and MacBook Pro. It provides the basics behind X.509v3

Storage 60

Storage Hardware Open Source Vmware 60

Scott Lowe

MARCH 23, 2017

Networking. Biruk Mekonnen has an introductory article on using Netmiko for network automation. Gabriele Gerbino has a nice write-up about Cisco’s efforts with APIs ; his article includes a brief description of YANG data models and a comparison of working with network devices via SSH or via API. Servers/Hardware.

Open Source 60

Open Source Storage Vmware Network 60

Scott Lowe

SEPTEMBER 10, 2013

Next, Intel talks about how they have worked to expose hardware features into OpenStack. This involves work in libvirt as well as OpenStack, so that OpenStack can be aware of CPU functionality (which, in turn, might allow cloud providers to charge extra for “premium images” that offer encryption support in hardware).

Intel 60

Intel Storage Open Source Hardware 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. Networking. Jason Edelman recently took a look at Docker networking. Servers/Hardware.

Vmware 60

Vmware Linux Virtualization Network 60