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. Nice to see that work on getting Linux up and running and fully functional on Apple’s proprietary M1 chips is progressing well. Servers/Hardware.

IPv6 60

IPv6 Storage Hardware Vmware 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. Denis Mulyalin shows how to use Nornir, Salt, and NetBox to template your network tests.

Programming 96

Programming Policies Network Cloud 96

Scott Lowe

APRIL 29, 2022

My link of links and articles from around the Internet is a bit light on networking and virtualization this time around, but heftier in the security, cloud, and OS/application sections. Networking. Liam Galvin shows a couple of ways that Rego (the language behind Open Policy Agent) can be used maliciously. Enjoy the content!

Linux 74

Linux Storage Programming Applications 74

CIO Business Intelligence

DECEMBER 22, 2023

Those bumps in spending include added demand for cloud and cloud-adjacent workers who can help maintain and continuously improve and expand enterprise cloud networks. Skills: Relevant skills for a DevOps engineer include automation, Linux, QA testing, security, containerization, and knowledge of programming languages such as Java and Ruby.

Cloud 130

Cloud Company Devops Disaster Recovery 130

Scott Lowe

MAY 7, 2021

In this Technology Short Take, I’ve gathered some links for you covering topics like Azure and AWS networking, moving from macOS to Linux (and back again), and more. Networking. ” Specifically, this post talks about Kubernetes networking. Let’s jump right into the content! Programming. Virtualization.

Linux 60

Linux Hardware Network Cloud 60

Scott Lowe

MARCH 12, 2021

I didn’t do so well on storage links; apologies to my storage-focused friends! Networking. Isovalent, the folks behind Cilium, recently unveiled the Network Policy Editor, a graphical way of editing Kubernetes Network Policies. However, there should be something for most everyone else.

IPv6 60

IPv6 Network Storage Policies 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

FEBRUARY 16, 2017

Networking. 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.).

Vmware 60

Vmware Linux Storage Load Balancer 60

Linux Academy

AUGUST 29, 2019

To continually support you in your mission to learn and grow we are always adding new courses and free resources to begin developing your Linux and Cloud skills. Courses Free in September: Microsoft SQL Server On Linux Quick Start. Network Routing Fundamentals. Welcome to the Network Routing Fundamentals course!

Linux 18

Linux Course Devops Big Data 18

Scott Lowe

OCTOBER 31, 2012

In reality, OVS relies on the routing functionality that’s built into the Linux kernel, as you’ll see, and doesn’t perform the routing functionality itself (as far as I have been able to determine).</aside> Enable IP routing in the Linux kernel. Enabling IP Forwarding in the Linux Kernel.

Linux 123

Linux Virtualization Network Examples 123

Scott Lowe

FEBRUARY 28, 2022

Networking. Koyeb describes , at a high level, the global networking stack for their serverless platform. Rory McCune writes about a CVE in the Linux kernel that could allow for container escape in Kubernetes. Jim Jones has an article on getting started with S3-compatible object storage. Cloud Computing/Cloud Management.

Storage 79

Storage Hardware Policies Open Source 79

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. I hope you find something useful! Servers/Hardware. Plastic microchips

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

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). Enjoy some light reading over your festive holiday season!

Vmware 60

Vmware Network Linux Hardware 60

Scott Lowe

SEPTEMBER 22, 2017

Networking. Vincent Bernat has a really in-depth article on IPv4 route lookup on Linux (and one on IPv6 route lookup as well). Ivan Pepelnjak has a great article that tries to get to the kernel of truth in the middle of the intent-based networking hype. The company is VirTool Networks (catchy, eh?),

Storage 60

Storage Vmware Load Balancer 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. Alpine Linux 3.5 was recently released.

Vmware 60

Vmware Linux Open Source Data Center 60

Linux Academy

OCTOBER 2, 2019

Hi, I’m Anna, COO of Linux Academy. Anthony is out on some much-needed vacation, but that’s not going to stop us from updating you on everything new in this Linux Academy Monthly Update. CompTIA Linux Plus XK0-004. Configuring Azure Storage for Backups . Securing a Virtual Network with Azure Firewall .

Linux 13

Linux Disaster Recovery Course Firewall 13

Scott Lowe

MAY 29, 2020

Let’s see what I’ve managed to collect for you this time around… Networking. Ivan Pepelnjak provides a 101-level overview of AWS networking. Andrew Sy Kim tackles explaining a (somewhat) obscure part of Kubernetes networking: the externalTrafficPolicy setting. Read his write-up here. Servers/Hardware.

Linux 60

Linux Virtualization Security Backup 60

Scott Lowe

JUNE 2, 2016

Networking. 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. Tom Hollingsworth discusses how the rise of overlay networks killed large layer 2 networks and tools for building large layer 2 networks, like TRILL.

Vmware 60

Vmware Virtualization Linux Windows 60

Scott Lowe

OCTOBER 5, 2018

Networking. Brian Boucheron provides a great article on how to inspect and debug Kubernetes network primitives. Cory O’Daniel explains how to use role-based access control to assign Pod Security Policies (PSPs) to Kubernetes workloads. It might be worth watching as eBPF grows in importance in the Linux community, though.

Hardware 60

Hardware Open Source Vmware Linux 60

Scott Lowe

MAY 17, 2019

Networking. Courtesy of Tigera, Alex Pollitt shares some guidelines on when Linux conntrack is no longer your friend. Apparently Dell’s new docking stations support firmware updates via Linux. I’m thankful that Bill Demirkapi followed a responsible disclosure policy. Servers/Hardware. Virtualization.

Linux 60

Linux Dell Open Source Licensing 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.

Vmware 60

Vmware Linux Virtualization Network 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

FEBRUARY 1, 2019

Networking. Via Kirk Byers (who is himself a fantastic resource), I read a couple of articles on network automation that I think readers may find helpful. First up is a treatise from Mircea Ulinic on whether network automation is needed. I first ran into Forward Networks a few years ago at Fall ONUG in New York.

Network 60

Network Resources Devops Vmware 60

Scott Lowe

AUGUST 5, 2014

You may also be aware that I am involved with a project called Congress, which aims to bring an overarching policy service to OpenStack. Here are some sessions pertaining to Congress: Congress: Policy as a Service. Policy and Security in the “Goldilocks” Zone. Congress Sessions. VMware Sessions. Vote for My Site!

Vmware 60

Vmware Virtualization Policies Linux 60

Scott Lowe

SEPTEMBER 10, 2013

This builds on TCP to enforce policies about where instances are allowed to run. Gopal now takes over and moves the discussion into storage in OpenStack. By granting greater intelligence to how volumes are allocated, cloud service providers can offer differentiated (read: premium priced) services for block storage.

Intel 60

Intel Storage Open Source Hardware 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). Go check out part 2.

Operating Systems 60

Operating Systems Authentication Network Open Source 60

Scott Lowe

JANUARY 6, 2018

Networking. Lindsay Hill walks through using Telegraf, InfluxDB, and Grafana to monitor network statistics. Via Ivan Pepelnjak, I found this article by Diane Patton at Cumulus Networks talking about container network designs. Christian Kellner talks about work done on Thunderbolt 3 security levels for GNU/Linux.

Linux 60

Linux Vmware Comparison Network 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. Tim Hinrichs discusses securing the Kubernetes API with Open Policy Agent.

Open Source 60

Open Source Tools Policies Cloud 60

Scott Lowe

SEPTEMBER 4, 2013

In this post, I’m going to introduce you to the concept of Linux network namespaces. So what are network namespaces? Generally speaking, an installation of Linux shares a single set of network interfaces and routing table entries. Network namespaces change that fundamental assumption.

Linux 111

Linux Network Examples Policies 111

Linux Academy

MARCH 16, 2020

If you’ve been a Linux Academy learner for a while, you have probably seen our monthly updates. While we have enjoyed creating these Youtube videos, we have made the official move to give you a single source of truth, in text form, of all things new at Linux Academy. Thank you for being a Linux Academy learner.

Linux 124

Linux Devops Course Resources 124

Scott Lowe

MARCH 30, 2018

Networking. Matt Oswalt tackles the topic of unit testing (specifically with regard to network automation) with a post on unit testing JunOS with JSNAPy. Sean Howard talks about using the NSX Service Compose to create a more elegant ruleset for enforcing security policy. Still, the idea is pretty cool.

Linux 60

Linux Vmware Windows Applications 60

CIO Business Intelligence

JANUARY 4, 2024

Having segmentation between infrastructure providing data processing and data storage is an example of a broad IT security architectural pattern. If the solution’s goal involves processing and storing data, the architect is constrained to place the pieces that will fulfill those tasks in the proper segments.

Financial 105

Financial Architecture Resources Security 105

Scott Lowe

SEPTEMBER 5, 2013

Jeda Networks. I’ve mentioned Jeda Networks before (see here ), and I was pretty excited to have the opportunity to sit down with a couple of guys from Jeda to get more details on what they’re doing. Jeda Networks describes themselves as a “software-defined storage networking” company.

Meeting 63

Meeting Storage Hardware Network 63

Scott Lowe

DECEMBER 2, 2013

This post, by the way, was sparked in part by a comment on my article on using GRE tunnels with OVS , in which the reader asked: “Is there a way to configure bare Linux (Ubuntu)…with OVS installed…to serve as a tunnel endpoint…?” ” Hopefully this post helps answer that question. (By

Transportation 71

Transportation Linux Network Virtualization 71

Scott Lowe

MARCH 10, 2015

Networking. I love this post from Matt Oswalt on five next-gen skills for networking pros. It tells me that some skills—specifically, Linux, automation/configuration management, software development concepts—are going to be essential for all new IT pros in the near future. Here’s hoping you find something useful. You’re welcome.

Vmware 60

Vmware Linux Hardware Software Development 60

Virtualized Greek

AUGUST 27, 2013

Basically, if the relationship between the server team and networking team is already strained then what impact will NSX have. Scott: Responded by basically saying the political issues will not disappear and the network team has to be involved in the creation of policy for the virtual network. Is it simple or complex?

Vmware 68

Vmware Virtualization Network VOIP 68