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Category Archives for "Networking"

Kubernetes 004. Real-world Example of Deploying Kubernetes at Azure Kubernetes Services with Terrafom

Hello my friend,

In one of the past blogposts we have highlighted the journey for automation for engineers, who is willing to develop further outside of their core remit, such as networking, compute, or storage. In today’s blogpost we’ll provide some of examples how the different moving pieces are coming along together.



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Do I Need to Learn Network Automation?

Yes, you do. Start today with our Network Automation Training programs:

We offer the following training programs for you:

During these trainings you will learn the following topics:

  • Success and failure strategies to build the automation tools.
  • Principles of software developments and the most useful and convenient tools.
  • Data encoding (free-text, XML, JSON, YAML, Protobuf).
  • Model-driven network automation with YANG, NETCONF, RESTCONF, GNMI.
  • Full configuration templating with Jinja2 based on the source Continue reading

Server supply chain undergoes shift due to geopolitical risks

Geopolitical tensions among the US, China, and Taiwan are forcing a notable change to server manufacturing, according to Asian market research firm TrendForce, which predicts that core parts of the server supply chain will eventually shift to southeast Asia and the Americas. According to TrendForce’s research, Taiwan-based original design manufacturers (ODM) currently account for about 90% of global server motherboard production. A notable exception is Supermicro, which has a 1.5 million square-foot factory in Fremont, California. It also has an 800,000 square-foot facility in Taiwan.Ever since the start of the trade dispute between the US and China beginning in 2018, server ODMs began looking at moving their production lines from mainland China to Taiwan. Then, due to the explosion in construction of data centers across the Asia-Pacific region, motherboard makers began looking at southeast Asian countries such as Malaysia and Thailand for capacity expansion.To read this article in full, please click here

Server supply chain undergoes shift due to geopolitical risks

Geopolitical tensions among the US, China, and Taiwan are forcing a notable change to server manufacturing, according to Asian market research firm TrendForce, which predicts that core parts of the server supply chain will eventually shift to southeast Asia and the Americas. According to TrendForce’s research, Taiwan-based original design manufacturers (ODM) currently account for about 90% of global server motherboard production. A notable exception is Supermicro, which has a 1.5 million square-foot factory in Fremont, California. It also has an 800,000 square-foot facility in Taiwan.Ever since the start of the trade dispute between the US and China beginning in 2018, server ODMs began looking at moving their production lines from mainland China to Taiwan. Then, due to the explosion in construction of data centers across the Asia-Pacific region, motherboard makers began looking at southeast Asian countries such as Malaysia and Thailand for capacity expansion.To read this article in full, please click here

Better pipes

In my blog post The uselessness of bash I made a tool to improve pipes in shell, to assemble a better pipeline.

It solves the problem, but it’s a bit too different, with its own language.

While complaining with some people at work that one of the main features of shell (the pipe operator) is broken, someone joked that it should be replaced by a protobuf based protocol.

But on second thought it’s not really a joke.

How about instead of this:

$ goodpipe <<EOF
[
  ["gsutil", "cat", "gs://example/input-unsorted.txt"],
  ["sort", "-S300M", "-n"],
  ["gzip", "-9"],
  ["gsutil", "cp", "-", "gs://example/input-sorted-numerically.txt.gz"]
]
EOF

how about this:

$ wp -o gsutil cat gs://example/input-unsorted.txt \
  | wp -io sort -S300M -n \
  | wp -io gzip -9 \
  | wp -i gsutil cp - gs://example/input-sorted-numerically.txt.gz

It doesn’t use protobufs, but a simpler regular protocol. This in order to avoid well known bugs types. Before implementing any protocol also see formal theory and science of insecurity.

First I hacked it together in Go, but I think the main implementation I’ll maintain is the one I made while porting it to Rust, as a way to learn Rust. The Continue reading

What is a VPN? A secure network over the internet

VPNs date back to the 1990s when the public internet lacked almost any form of security, and the technology was developed to provide secure and cost-effective connections across this insecure landscape.VPNs have become widely deployed across enterprise networks and experienced a surge during the pandemic, when companies had to scramble to provide secure remote access to employees who were suddenly working from home.VPNs remain popular today, but they are also slowly but surely being supplanted by more flexible, more secure, more granular alternatives, such as SD-WAN, Zero Trust Network Architecture (ZTNA), and SASE, a cloud-based service that includes SD-WAN, ZTNA and other security features.To read this article in full, please click here

Managing infrastructure with Terraform, CDKTF, and NixOS

A few years ago, I downsized my personal infrastructure. Until 2018, there were a dozen containers running on a single Hetzner server.1 I migrated my emails to Fastmail and my DNS zones to Gandi. It left me with only my blog to self-host. As of today, my low-scale infrastructure is composed of 4 virtual machines running NixOS on Hetzner Cloud and Vultr, a handful of DNS zones on Gandi and Route 53, and a couple of Cloudfront distributions. It is managed by CDK for Terraform (CDKTF), while NixOS deployments are handled by NixOps.

In this article, I provide a brief introduction to Terraform, CDKTF, and the Nix ecosystem. I also explain how to use Nix to access these tools within your shell, so you can quickly start using them.

CDKTF: infrastructure as code​

Terraform is an “infrastructure-as-code” tool. You can define your infrastructure by declaring resources with the HCL language. This language has some additional features like Continue reading

The top 12 tech stories of 2022

The year highlighted how vulnerable the technology sector is to the vagaries of geopolitics and the macroeconomy, as IT giants laid off workers, regulators cracked down on tech rule-breakers, nations negotiated data security regulations, the US-China chip war widened, and the Ukraine war disrupted business as usual.

Looking ahead to the network technologies of 2023

What’s the single most important thing that enterprises should know about networking in 2023? Forget all that speeds-and-feeds crap you hear from vendors. The answer is that networking is now, and forever, linked to business applications, and those applications are linked now to the way that we use the Internet and the cloud. We’re changing how we distribute and deliver business value via networking, and so network technology will inevitably change too, and this is a good time to look at what to expect.Growth in Internet dependence First, the Internet is going to get a lot better because it’s going to get a lot more important. It’s not just that the top-end capacities offered will be raised, in many cases above 2 Gbps. Every day, literally, people do more online, and get more interactive, dynamic, interesting, websites to visit and content to consume. Internet availability has been quietly increasing, and in 2023 there will be a significant forward leap there, in large part because people who rely on something get really upset when it’s not working.To read this article in full, please click here

The top 12 tech stories of 2022

The year highlighted how vulnerable the technology sector is to the vagaries of geopolitics and the macroeconomy, as IT giants laid off workers, regulators cracked down on tech rule-breakers, nations negotiated data security regulations, the US-China chip war widened, and the Ukraine war disrupted business as usual.

Looking ahead to the network technologies of 2023

What’s the single most important thing that enterprises should know about networking in 2023? Forget all that speeds-and-feeds crap you hear from vendors. The answer is that networking is now, and forever, linked to business applications, and those applications are linked now to the way that we use the Internet and the cloud. We’re changing how we distribute and deliver business value via networking, and so network technology will inevitably change too, and this is a good time to look at what to expect.Growth in Internet dependence First, the Internet is going to get a lot better because it’s going to get a lot more important. It’s not just that the top-end capacities offered will be raised, in many cases above 2 Gbps. Every day, literally, people do more online, and get more interactive, dynamic, interesting, websites to visit and content to consume. Internet availability has been quietly increasing, and in 2023 there will be a significant forward leap there, in large part because people who rely on something get really upset when it’s not working.To read this article in full, please click here

The Power of Complaining Properly

Recently I’ve started listening to a new podcast all about the brain and behaviors called Hidden Brain. It’s got a lot great content and you should totally check it out. One of the latest episodes deals with complaining and how it can make us less productive and more likely to repeat patterns or shut people out.

Complaining is as old as language. I’m sure as soon as the first person to create communications around spoken words was able to teach another person one of the first things they did was complain about the weather or something they hated. Our mind is built to express itself about things we don’t like, such as bad drivers or silly behaviors at work.

The episode explores the ways that our brain can trap us in cycles of complaining simply for the sake of complaining. It also discusses how we should try to spend more time trying to be productive in how we address complaints. I’ve experienced this a lot in IT as well as in my career after being directly involved in IT and there’s a lot of merit in changing the way we complain about things.

Airing Grievances

Complaining without a suggested solution Continue reading

Nvidia still crushing the data center market

Nvidia is playing some serious games.When Jensen Huang and his two partners established Nvidia in 1993, the graphics chip market had many more competitors than the CPU market, which had just two. Nvidia’s competitors in the gaming market included ATI Technologies, Matrox, S3, Chips & Technology, and 3DFX.A decade later, Nvidia had laid waste to every one of them except for ATI, which was purchased by AMD in 2006. For most of this century, Nvidia has shifted its focus to bring the same technology it uses to render videogames in 4k pixel resolution to power supercomputers, high-performance computing (HPC) in the enterprise, and artificial intelligence.To read this article in full, please click here

Nvidia still crushing the data center market

Nvidia is playing some serious games.When Jensen Huang and his two partners established Nvidia in 1993, the graphics chip market had many more competitors than the CPU market, which had just two. Nvidia’s competitors in the gaming market included ATI Technologies, Matrox, S3, Chips & Technology, and 3DFX.A decade later, Nvidia had laid waste to every one of them except for ATI, which was purchased by AMD in 2006. For most of this century, Nvidia has shifted its focus to bring the same technology it uses to render videogames in 4k pixel resolution to power supercomputers, high-performance computing (HPC) in the enterprise, and artificial intelligence.To read this article in full, please click here

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