Scott Lowe

MAY 17, 2019

There will be a longer gap than usual before the next Tech Short Take (more details to come on Monday), but in the meantime here’s some articles and links to feed your technical appetite. Courtesy of Tigera, Alex Pollitt shares some guidelines on when Linux conntrack is no longer your friend. Networking. Servers/Hardware.

Linux 60

Linux Dell Open Source Licensing 60

Scott Lowe

MAY 27, 2022

I mean, don’t you want to spend this weekend catching up on some technology-related articles instead of cooking on the grill and gathering with friends and family? Still, for those who need a little technology fix over the weekend, hopefully I’ve included something useful in the list of articles below. I certainly hope not!

Virtualization 79

Virtualization Storage Programming Network 79

Scott Lowe

DECEMBER 27, 2019

Bruce Schneier writes about how some Chinese hackers are bypassing RSA software token authentication (the title is a bit more broad, implying other forms of two-factor authentication are affected, but the article focuses on attacks against the use of RSA software tokens). This article has a list of tips and tricks for zsh.

Open Source 60

Open Source Vmware Authentication Storage 60

Scott Lowe

FEBRUARY 28, 2022

Thanks to this article , that oversight is now corrected. Oh, and the article shares a handy Python script to help implement bogon filtering in NSX-T. Components involved include the open source Kuma service mesh (in turn leveraging Envoy), anycast BGP, and mutual TLS (mTLS). Seriously.). Servers/Hardware.

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Storage Hardware Policies Open Source 79

Scott Lowe

JANUARY 28, 2016

As usual, I’ve gathered what I hope to be a useful but varied collection of articles and links on key data center technologies. 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. Networking. Servers/Hardware.

Vmware 60

Vmware Linux Open Source Devops 60

Scott Lowe

OCTOBER 30, 2013

Recently a couple of open source software (OSS)-related announcements have passed through my Inbox, so I thought I’d make brief mention of them here on the site. Ceph , the open source distributed software system, is now coming in a fully-supported version aimed at enterprise markets. Mirantis OpenStack.

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Open Source Linux Vmware Enterprise 60

Scott Lowe

MARCH 2, 2020

It seems like the natural progression of the Tech Short Takes is moving toward monthly articles, since it’s been about a month since my last one. Redpill Linpro talks to readers about their new routers running Cumulus Linux. This article from Bruce Schneier is worth reading. Both are good articles. Servers/Hardware.

Linux 60

Linux Windows Hardware Network 60

Scott Lowe

FEBRUARY 17, 2023

Over the last few weeks, I’ve been collecting articles I wanted to share with readers on major areas in technology: networking, security, storage, virtualization, cloud computing, and OSes/applications. Also see the link to the newer article the author wrote as a follow-up. As fate (luck?)

Programming 96

Programming Policies Network Cloud 96

Scott Lowe

DECEMBER 29, 2016

Until then, here’s some data center-related articles and links for your enjoyment. 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. Via Corban’s article (see previous bullet), I found this. Alpine Linux 3.5

Vmware 60

Vmware Linux Open Source Data Center 60

Scott Lowe

DECEMBER 6, 2013

Welcome to Technology Short Take #37, the latest in my irregularly-published series in which I share interesting articles from around the Internet, miscellaneous thoughts, and whatever else I feel like throwing in. Martijn Smit has launched a series of articles on VMware NSX. Here’s hoping you find something useful! Networking.

Vmware 60

Vmware Storage Linux Network 60

Scott Lowe

JANUARY 14, 2016

As we start a new year, here’s a collection of links and articles from around the web. Nir Yechiel posted an article on using the Cumulus VX QCOW2 image with Fedora and KVM. Here’s an article on an effort to add Cisco IOS support to NAPALM. Here’s hoping you find something useful to you! Networking. Servers/Hardware.

Vmware 60

Vmware Devops Storage Linux 60

Scott Lowe

OCTOBER 5, 2018

Here’s another collection of articles and blog posts about some of the common technologies that modern IT professionals will typically encounter. Brian Boucheron provides a great article on how to inspect and debug Kubernetes network primitives. Sathyajith Bhat covers five open source tools for container security.

Hardware 60

Hardware Open Source Vmware Linux 60

Scott Lowe

JANUARY 28, 2016

As usual, I’ve gathered what I hope to be a useful but varied collection of articles and links on key data center technologies. 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. Networking. Servers/Hardware.

Vmware 60

Vmware Open Source Linux Devops 60

Scott Lowe

MARCH 2, 2017

Skydive is (in the project’s own words) an “open source real-time network topology and protocols analyzer.” OK, now that I’ve mentioned Skydive, I can talk about this article that provides an example of functional SDN testing with Terraform and Skydive. I found this article on SELinux concepts for humans to be quite helpful.

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Linux Devops Open Source Virtualization 60

Scott Lowe

MARCH 23, 2017

However, hopefully I’ve managed to gather together some articles with useful information for you. Biruk Mekonnen has an introductory article on using Netmiko for network automation. Acra is open source and available via GitHub. There’s some good information in this article; I recommend reading it. Networking.

Open Source 60

Open Source Storage Vmware Network 60

Scott Lowe

NOVEMBER 7, 2014

That’s right, it’s time for yet another collection of links and articles from around the Internet on various data center-related technologies, products, projects, and efforts. It was good to read this post on Cumulus Linux first impressions by Jeremy Stretch. ” I highly encourage reading this article.

Vmware 69

Vmware Linux Storage Virtualization 69

Scott Lowe

FEBRUARY 9, 2018

Ready for another round of links, articles, and thoughts on data center technologies? If you’re using CloudFormation to manage your AWS security groups in an infrastructure-as-code approach, you owe it to yourself to check out this article by Jose Luis Ordiales. Michael Wittig shares some details on migrating to Amazon Linux 2.

Vmware 60

Vmware Linux Network Storage 60

Scott Lowe

MARCH 17, 2016

In any case, here’s another collection of links and articles from around the Net on the major data center technology areas. At DevOps Networking Forum 2016, I had the opportunity to share a presentation on some Linux networking options. You may also find this (related) article on memory inside Linux containers to be helpful.

Vmware 60

Vmware Linux Network Open Source 60

Scott Lowe

JULY 5, 2019

I also appreciate that Jon included a “Lab time” section in his article that encourages readers to try out the concepts he’s explaining. If you’re unfamiliar with public key infrastructure (PKI), digital certificates, or encryption, you may find this Linux Journal article helpful. Servers/Hardware.

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Storage Hardware Open Source Vmware 60

Scott Lowe

JANUARY 19, 2018

Today I have another collection of data center technology links, articles, thoughts, and rants. ” Those familiar with networking concepts will identify well with the ideas in this article, I think. Barry Peddycord shares an update on Ansible support for the Cumulus Linux NCLU. Here’s hoping you find something useful!

Vmware 60

Vmware Open Source Linux Cloud 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 MTU in OpenStack Neutron has been, as this article by Sam Yaple points out, a bit of a touchy subject. Networking. Servers/Hardware.

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Vmware Hardware Storage Linux 60

Linux Academy

MARCH 28, 2019

This means if storage is cheaper within one cloud datacenter, or user proximity warrants placement in foreign shore locations, that new clusters may be strategically placed in these chosen locales. Once federated storage solutions other than the Prometheus time series database may be used to record metrics over longer periods of time.

Open Source 60

Open Source Devops Linux Cloud 60

Scott Lowe

AUGUST 1, 2014

CoreOS, in case you haven’t heard of it, is a highly streamlined Linux distribution designed with containers, massive server deployments, and distributed systems/applications in mind. systemd is not unique to CoreOS; it is the new standard system and service manager for Linux. A Brief Introduction to Linux Containers with LXC.

Linux 89

Linux Applications Open Source System 89

Scott Lowe

APRIL 19, 2019

I have, however, finally managed to pull together this list of links and articles from around the Internet, and I hope that something I’ve included here proves useful to readers. Milind Gunjan shares some tips for troubleshooting Linux bridged networking on a KVM host. Welcome to Technology Short Take #112! Networking.

Open Source 60

Open Source Tools Policies Cloud 60

Scott Lowe

JANUARY 14, 2016

As we start a new year, here’s a collection of links and articles from around the web. Nir Yechiel posted an article on using the Cumulus VX QCOW2 image with Fedora and KVM. Here’s an article on an effort to add Cisco IOS support to NAPALM. Here’s hoping you find something useful to you! Networking. Servers/Hardware.

Devops 60

Devops Vmware Storage Open Source 60

Scott Lowe

OCTOBER 5, 2012

Welcome to Technology Short Take #25, my irregularly-published collection of links, articles, thoughts, and rants. Erik Smith, notably known for his outstanding posts on storage and FCoE, takes a stab at describing some of the differences between SDN and network virtualization in this post. storage enhancements. It starts here.

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Storage Vmware Linux Virtualization 92

Scott Lowe

MAY 25, 2017

Here’s a quick post on nftables , the (eventual) Linux replacement for iptables. Check out this blog on work done to bring firmware updates into the land of Linux. I was recently reviewing some articles on Git, the popular distributed version control system, and came across a few related posts. Cloud Computing/Cloud Management.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

MAY 25, 2017

Here’s a quick post on nftables , the (eventual) Linux replacement for iptables. Check out this blog on work done to bring firmware updates into the land of Linux. I was recently reviewing some articles on Git, the popular distributed version control system, and came across a few related posts. Cloud Computing/Cloud Management.

Linux 60

Linux Open Source Network Vmware 60

Scott Lowe

DECEMBER 8, 2016

Gert van Dijk has a great article on upgrading your SSH keys to take advantage of new key types and enhanced security. 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). Operating Systems/Applications.

Vmware 60

Vmware Storage Intel Virtualization 60

Scott Lowe

NOVEMBER 6, 2012

If you’ve been reading my site for any length of time, you know that I’ve been working with libvirt , the open source virtualization API, for a while. Be sure to check out Theron’s comment on this article for more information on a potential Ubuntu PPA that might help with this issue. Compiling libvirt 0.10.1

Virtualization 94

Virtualization Linux Open Source System 94

Scott Lowe

DECEMBER 6, 2019

Philippe Bogaerts has an article on how to use tcpdump effectively in Kubernetes. The one caveat to his approach that may be worth mentioning is that some policies (a PodSecurityPolicy or the use of Open Policy Agent) may prevent the user from launching a Pod connected to the host’s network namespace. Nothing this time; sorry!

Vmware 60

Vmware Network Linux Hardware 60

Scott Lowe

APRIL 27, 2018

Now that I’m starting to get settled into my new role at Heptio, I’ve managed to find some time to pull together another collection of links and articles pertaining to various data center technologies. Cilium, the open source project working to bring eBPF-powered networking and security to Kubernetes environments, has hit the 1.0

Vmware 60

Vmware Storage Open Source Security 60

Scott Lowe

MAY 4, 2017

In the meantime, here’s a few links and articles for your reading pleasure. This article gives an overview and brief introduction to eBPF. More articles are apparently planned, and I’m looking forward to reading them. You can read more about the proposed changes in this article. Networking. Just be sure to start!

Vmware 60

Vmware Storage Network Examples 60

Scott Lowe

JANUARY 7, 2013

For example, my work with KVM, OVS, Libvirt, and Puppet exposed some gaps in my base Linux knowledge, and this is reflected in my progress. This article was originally posted on blog.scottlowe.org. Visit the site for more information on virtualization, servers, storage, and other enterprise technologies. Some Projects for 2012.

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Report Linux Virtualization Open Source 103

Scott Lowe

MARCH 1, 2019

Daniel Dib has a great article on how network engineers need to evolve. VyOS is an open source Linux-based network operating system.). Folks running Fedora who have work/corporate VPNs that muck up their DNS settings might be interested in this article on the DNSMasq plugin for Network Manager. Networking.

Operating Systems 60

Operating Systems Authentication Network Open Source 60

Scott Lowe

SEPTEMBER 10, 2013

Gopal now takes over and moves the discussion into storage in OpenStack. With regard to block storage via Cinder, Intel has incorporated support to filter volumes based on availability zone, capabilities, capacity, and other features so that volumes are allocated more intelligently based on workload and type of service required.

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Intel Storage Open Source Hardware 60

Scott Lowe

FEBRUARY 7, 2013

Reinforce base Linux knowledge. I’ll be focusing on Red Hat Enterprise Linux (RHEL) and RHEL variants, since that seems to be what’s most commonly found in enterprise deployments today. As with my base Linux knowledge, my primary goal here is to be able to do most anything that I need to do with Puppet.

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Linux Data Center Network Open Source 92