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. Operating Systems/Applications. Something about Linux, and Fedora in particular, just keeps drawing me back. See, something for everyone!

Linux 60

Linux Vmware Open Source Examples 60

Scott Lowe

OCTOBER 8, 2021

There’s some networking stuff, a few security links, and even a hardware-related article. Networking. Russ White shares Russ' rules for network design. Operating Systems/Applications. Eric Sloof has a link to a white paper from VMware on host power management in vSphere 7.0. Servers/Hardware.

IPv6 60

IPv6 Storage Hardware Vmware 60

Scott Lowe

JUNE 18, 2021

Networking. Via Ivan Pepelnjak, I was pointed to Jon Langemak’s in-depth discussion of working with Linux VRFs. The first is a post on Cilium and F5 load balancer integration , while the second discusses implementing Kubernetes network policies with Cilium and Linkerd. Operating Systems/Applications.

Vmware 60

Vmware Hardware Load Balancer Apple 60

Scott Lowe

OCTOBER 28, 2022

Networking. Ivan Pepelnjak addresses the idea that network automation is harmful. I believe that IT folks in all disciplines, including networking, need to embrace automation. William Lam writes about the beta for VMware Cloud Consumption Interface (CCI). Operating Systems/Applications. Programming.

Open Source 79

Open Source Apple Vmware Cloud 79

Scott Lowe

JUNE 2, 2016

Networking. Anthony Burke has written a script that uses VMware NSX to protect VMware Log Insight instances. Russ White tackles the issue of networking engineers needing to learn to code. Jason Messer has an article describing how networking works with Windows containers. Operating Systems/Applications.

Vmware 60

Vmware Virtualization Linux Windows 60

Scott Lowe

AUGUST 12, 2022

DNS, BGP, hardware-based security, Kubernetes, Linux—they’re all in here. Networking. A “highly evasive” Linux malware named OrBit has emerged; see here for more details. Operating Systems/Applications. Hopefully I’ve managed to find something useful for someone. Virtualization.

Linux 90

Linux Storage Virtualization Hardware 90

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

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

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. Operating Systems/Applications.

Vmware 60

Vmware Open Source Linux Cloud 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.). Operating Systems/Applications. Hint, hint.).

Vmware 60

Vmware Linux Open Source Devops 60

Scott Lowe

JANUARY 15, 2021

Networking. From early December 2020, there’s also this reminder about the security updates released by VMware to address a zero-day vulnerability in several products. Heidi Howard and Ittai Abraham illustrate some of the challenges of the Raft consensus protocol when there is a network partition.

Linux 60

Linux Firewall Open Source Vmware 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. Networking. Michael Kashin shares the journey of containerizing NVIDIA Cumulus Linux.

Linux 90

Linux Load Balancer Malware Virtualization 90

Scott Lowe

NOVEMBER 17, 2016

Networking. Ansible has made some good progress in supporting network automation in the latest release (2.2), according to this blog post. Jeremy Stretch mulls over the (perceived) problem of getting traffic into and out of overlay networks. I’m admittedly a Cumulus Networks fan.) Operating Systems/Applications.

Linux 60

Linux Vmware Storage Network 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

JULY 22, 2013

Networking. 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. Operating Systems/Applications.

Vmware 106

Vmware Virtualization Network Linux 106

Scott Lowe

FEBRUARY 9, 2018

Networking. Sam McGeown has a nice diagram of the communications channels between the various VMware NSX components. I particularly liked his (mini-)rant about how network automation can’t be only about making the network engineer’s life easier. Operating Systems/Applications. Servers/Hardware.

Vmware 60

Vmware Linux Network Storage 60

Scott Lowe

JUNE 24, 2022

Networking. BPFDoor, as it is known, is a passive backdoor that allows threat actors to remotely connect to a Linux shell. Operating Systems/Applications. Here’s Chris Evans’ take on the Broadcom acquisition of VMware. Colin shares a critical learning item on using Terraform with VMware ESXi.

Vmware 74

Vmware Linux Storage Virtualization 74

Scott Lowe

APRIL 15, 2022

Networking. Want to understand kube-proxy , a key part of Kubernetes networking, a bit better? Although Linux is often considered to be superior to Windows and macOS with regard to security, it is not without its own security flaws. Operating Systems/Applications. Start here.

Linux 74

Linux Load Balancer IPv6 Licensing 74

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. Operating Systems/Applications.

Vmware 69

Vmware Linux Storage Virtualization 69

Scott Lowe

NOVEMBER 10, 2017

Networking. VMware recently released an updated to PowerCLI (version 6.5.3), and with it comes a set of cmdlets that provide low-level access to the NSX-T REST API. I really enjoyed David Gee’s series on the network automation engineer persona ( part 1 , part 2 , part 3 , and part 4 ). Operating Systems/Applications.

Vmware 60

Vmware Storage Engineering Network 60

Scott Lowe

OCTOBER 9, 2016

Networking. 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? Clifford Haas has a review of VMware NSX (this is from back in January).

Vmware 60

Vmware Case Study Linux Network 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. Operating Systems/Applications.

Vmware 60

Vmware Linux Open Source Data Center 60

Scott Lowe

JULY 21, 2016

Networking. Netmiko, if you haven’t heard, is a fantastic Python library that’s really useful when writing Python-based network automation scripts. First up, there’s a great article on using IPVLAN with Docker and Cumulus Linux (with a tie back to sFlow, naturally!). This episode is a bit long; sorry about that! Thanks Jason!

Vmware 60

Vmware Linux Storage Hardware 60

Scott Lowe

DECEMBER 8, 2016

Networking. Will Robinson talks about how to structure your Ansible playbooks in the context of using Ansible to control your network gear. In case you’re interested, here’s more details on CVE-2016-5195 , aka “Dirty Cow,” and how it might be used to allow a user to escape from a Linux container (like a Docker container).

Vmware 60

Vmware Storage Intel Virtualization 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. Networking. Rick Sherman has an article on using Jinja2 templates for network automation , including a practical example.

Vmware 60

Vmware Network Virtualization IPv6 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

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.). Operating Systems/Applications. Hint, hint.).

Vmware 60

Vmware Open Source Linux Devops 60

Scott Lowe

OCTOBER 17, 2017

It’s a toolkit, part of the Moby Project, that is used for building secure, portable, and lean operating systems for containers. It uses the moby tooling to build system images. Linux containers on Windows (LCOW) preview support. Multi-arch build system. Fully immutable system images.

Linux 60

Linux Architecture Open Source Vmware 60

Scott Lowe

FEBRUARY 11, 2021

I’ve got a wide range of topics for you this time around—eBPF, Falco, Snort, Kyverno, etcd, VMware Code Stream, and more. Networking. Justin Pietsch Has a lengthy article on why network engineers need to focus on getting the network out of the way. Operating Systems/Applications.

Vmware 60

Vmware Storage Study Network 60

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). Operating Systems/Applications. Servers/Hardware.

Vmware 60

Vmware Network Linux Hardware 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 Networking. Numan Siddique describes the native DHCP support available in OVN (Open Virtual Network). Servers/Hardware.

Vmware 60

Vmware Hardware Storage Linux 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 along the way. Networking. Operating Systems/Applications. Servers/Hardware.

Linux 60

Linux Load Balancer Malware Virtualization 60

Scott Lowe

MAY 4, 2017

Networking. There’s lots of talk about applying test-driven development (TDD) principles in various automation contexts, but I like the fact that Ajay Chenampara provides some practical examples in his blog post on applying TDD in network automation using Ansible. If you’re just starting your network automation journey, start small.

Vmware 60

Vmware Storage Network Examples 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). Operating Systems/Applications.

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). Operating Systems/Applications.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

AUGUST 16, 2017

This is my irregularly-published collection of links and articles from around the Internet related to the major data center technologies: networking, hardware, security, cloud computing, applications/OSes, storage, and virtualization. Networking. Want to install VMware NSX in your home lab, but concerned about resource utilization?

Vmware 60

Vmware Storage Network Windows 60

Scott Lowe

FEBRUARY 6, 2014

Networking. 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?

Linux 60

Linux Vmware Storage Virtualization 60