The Future Of DPUs In IT Infrastructure – Packet Pushers Livestream With Dell Technologies – Video

Data Processing Units (DPUs) describe the next generation of SmartNICs. They enhance the simple NIC with compute and memory and they have an operating system to host applications and APIs for system call offloads. DPUs can accelerate networking, security, and storage capabilities on servers while preserving CPU resources for applications. The Packet Pushers hosted a […]

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What David Flanagan Learned Fixing Kubernetes Clusters

People are mean. That’s one of the first things David Flanagan learned by fixing 50+ deliberately broken Kubernetes clusters on his YouTube series, “Klustered.” In one case, the submitter substituted a ‘c’ character with a unicode doppleganger — it looked identical to a c on the terminal output — thus causing an error that led to Flanagan doubting himself and his ability to fix clusters. “I really hate that guy,” Flanagan confided at the Civo Navigate conference last week in Tampa. “That was a long episode, nearly two hours we spent trying to fix this. And what I love about that clip — because I promise you, I’m quite smart and I’m quite good with Kubernetes — but it had me doubting things that I know are not the fault. The fact that I thought a six digit number is going to cause any sort of overflow on a 64 bit system — of course not. But debugging is hard.” After that show, Klustered adopted a policy of no Unicode breaks. “You only learn when things go wrong,” Flanagan said. “This is why I really love doing Klustered. If you just have a cluster that just works, Continue reading

Technology Short Take 165

Welcome to Technology Short Take #165! 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. This particular Technology Short Take is a tad heavy on cloud computing, but there’s a decent mix of other articles as well. Enjoy!

Networking

  • For a deeper understanding of Kubernetes networking, and in particular the role played by kube-proxy, I highly recommend this post by Arthur Chiao. There is a ton of information here!
  • Denis Mulyalin shows how to use Nornir, Salt, and NetBox to template your network tests. Now if Denis’ site just had a discoverable RSS feed…

Security

  • Aeva Black and Gil Yehuda tackle the conundrum of open source security.
  • If you haven’t looked at Teri Radichel’s series of posts on automating cybersecurity metrics (ACM), you should. There’s quite a bit of good information there.
  • This post on Cedar—a new policy language developed by AWS—is an interesting read. I’m curious as to the constraints that led AWS to develop a new policy language versus using something like Rego (part of Open Policy Agent); this isn’t something the article touches upon.

Cloud Computing/Cloud Continue reading

API Gateway, Ingress Controller or Service Mesh: When to Use What and Why

In just about every conversation on ingress controllers and service meshes, we hear some variation of the questions, “How is this tool different from an API gateway?” or “Do I need both an API gateway and an ingress controller (or service mesh) in Kubernetes?” This confusion is understandable for two reasons: Ingress controllers and service meshes can fulfill many API gateway use cases. Some vendors position their API gateway tool as an alternative to using an ingress controller or service mesh — or they roll multiple capabilities into one tool. Here, we will tackle how these tools differ and which to use for Kubernetes-specific API gateway use cases. For a deeper dive, including demos, watch the webinar “API gateway routes API requests from a client to the appropriate services. But a big misunderstanding about this simple definition is the idea that an API gateway is a unique piece of technology. It’s not. Rather, “API gateway” describes a set Continue reading

Hedge 166: Oblivious DoH with Chris Wood

DNS over HTTPS, or DoH, is designed to protect the end user’s DNS queries from last mile providers—but recursive servers (or resolvers) also have full access to what a user is asking for. How can users preserve their privacy against data collection at recursive servers? ODoH provides one answer. Listen in as Tom Ammon, Chris Wood, and Russ White discuss how ODoH works, and what this means for user privacy.

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To DNSSEC or Not?

OARC held a 2-day meeting in February, with a set of presentations on various DNS topics. Here’s some observations that I picked up from the presentations in that meeting.

Aryaka to build new points of presence as enterprises shift to SaaS

Secure access service edge (SASE) and SD-WAN provider Aryaka is set to open 27 new points of presence in 21 countries and 15 major metropolitan areas, with the goal of delivering low-latency services to a broader potential client base.Aryaka's AppAssure routing and application performance solution will be present in all new and current POPs, providing SaaS-based application delivery across its network, according to a company announcement. Aryaka said it will also support wireless last-mile connectivity worldwide.To read this article in full, please click here

So long, and thanks for all the deployments: deprecating Wrangler v1

So long, and thanks for all the deployments: deprecating Wrangler v1
So long, and thanks for all the deployments: deprecating Wrangler v1

Cloudflare Workers allow developers to deploy code instantly across the globe. Wrangler is the CLI tool we build (and use!) to create, modify, and upload Workers. We recently announced a new version of Wrangler with a bunch of new features – including offline development, zero-config startup, and developer tools support. Since then, we’ve been working hard to make the developer experience with version 2 as smooth and enjoyable as possible. We’re confident in what we’ve built and are now planning to officially deprecate version 1.

What’s happening?

Version 1 of Wrangler (@cloudflare/wrangler on npm) is now deprecated, which means no new features or bug fixes will be published unless they’re critical. Beginning August 2023, no further updates will be provided and the Wrangler v1 GitHub repo will be archived. We strongly recommend you upgrade to version 2 (wrangler on npm) to receive continued support. We have a migration guide to make this process easy!

Why?

Our goal is to make development on the Cloudflare platform as smooth and enjoyable as possible. Whether that means simplifying common workflows, incorporating powerful tools into the Wrangler codebase, or opening up Wrangler for use as a library Continue reading

Oracle outages serve as warning for companies relying on cloud technology

Multiple Oracle Cloud Infrastructure (OCI) outages have hit users around the world this week, and coming after interruptions in Microsoft's cloud services last month, are a reminder of the importance of site engineering for systems administrators whose businesses rely on cloud-based mission critical applications.The biggest OCI outage this week began on 17:30 GMT Monday and stretched till Wednesday 22:30 GMT, impacting customers across North and South America, Australia, Asia Pacific, Middle East, Europe and Africa.“Oracle engineers identified a performance issue within the back-end infrastructure supporting the OCI Public DNS API, which prevented some incoming service requests from being processed as expected during the impact window,” the company said on its cloud infrastructure  website.To read this article in full, please click here

Luminaries Argue For The Interconnect We Could Have Already Had

Here is an old saw that we bring out of the toolbox every now and then, and we use it just enough so it has never really gotten rusty and it can cut through a lot of crap to make a point: The datacenter, and perhaps all clients, would have been better off if InfiniBand had just become the ubiquitous I/O switched fabric standard it was designed to be back in the late 1990s. …

Luminaries Argue For The Interconnect We Could Have Already Had was written by Timothy Prickett Morgan at The Next Platform.

Kubernetes Unpacked 019: Understanding Service Meshes And Linkerd

In today's Kubernetes Unpacked podcast, we explore the concept of a service mesh and why you might want to run one in a Kubernetes cluster. While there are many service meshes to choose from we focus on Linkerd. Linkerd is available under an Apache 2.0 license and hosted by the Cloud Native Computing Foundation (CNCF).

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