The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Infrastructure’ Category

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b0rk does fun things with DNS: CNAME records at the root of the domain; technically not allowed, definitely not recommended, but somehow work for web browsing

Posted by jpluimers on 2023/12/21

[Wayback/Archive] 🔎Julia Evans🔍 on Twitter: “I’ve always heard that you can’t create CNAME records at the root of the domain. But apparently you can? It seems to work fine as far as I can tell but I’m curious about the possible consequences. (yes, I registered cnameroot.com just to make this tweet) “

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Posted in Cloud, Cloudflare, DNS, Infrastructure, Internet, Power User | Leave a Comment »

Ookla speedtest CLI for Windows has some undocumented arguments to accept license and GDPR

Posted by jpluimers on 2023/10/11

I had speedtest-cli running on MacOS and various Linux machines, but not yet on Windows (see for instance my post Ubuntu: Fixing the myserious “Failed to stop apt-daily.timer: Connection timed out”).

[Wayback/Archive] Install and Test Internet Speed with Speedtest CLI Command Line – NEXTOFWINDOWS.COM reminded me there is a Speedtest CLI for Windows download at at [Wayback/Archive] Speedtest CLI: Internet speed test for the command line, but I am a an automation/scripting/devops person, so luckily there are also [Wayback/Archive] Chocolatey Software | Speedtest by Ookla (don’t get [Wayback/Archive] Ookla.Speedtest download, as that is the GUI version).

Both the Chocolatey and winget packages are named the same, so that is quite confusing. This is how I have set them apart:

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Posted in *nix, *nix-tools, Batch-Files, Chocolatey, DevOps, GDPR/DS-GVO/AVG, Internet, ISP, KPN, Notepad++, Power User, Privacy, Scripting, SpeedTest, Windows, xs4all | 2 Comments »

Looking for maintainer(s) for fritzcap (Python project that captures calls from a Fritz!Box)

Posted by jpluimers on 2023/07/12

Given my health uncertainty, I am looking for maintainers for the fritzcap project (it captures calls from a Fritz!Box modem/router and is written in Python).

History

The fritzcap project was originally started in2007 by [Wayback/Archive] spongebob | IP Phone Forum, first as a binary fritzcap.exe Windows executable (see his first post at [Wayback/Archive] FritzBox: Tool für Etherreal Trace und Audiodaten-Extraktion | IP Phone Forum). In 2010 it became an open source Python project at [Wayback/Archive] Google Code Archive – Long-term storage for Google Code Project Hosting.

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Posted in About, Audio, Cloud, Communications Development, Containers, Development, Docker, ffmpeg, Fritz!, Fritz!Box, fritzcap, Hardware, HTTP, Infrastructure, Internet protocol suite, Media, Network-and-equipment, Personal, Power User, Python, Scripting, Software Development, TCP | Leave a Comment »

An unexpected turn of events when Jeff Geerling posted “I’m hosting my website on a FARM!”

Posted by jpluimers on 2023/07/06

Some links on the unexpected turn of events after [Archive] Jeff Geerling (@geerlingguy) / Twitter posted

First his site got more traffic because of the post, then within an hour traffic exploded because of a DDoS overflowing both his Raspberry Pi cluster and his mobile data capacity.

Jeff will likely do blog posts on these and update the underlying GitHub repository at [Wayback/Archive] geerlingguy/turing-pi-2-cluster: Turing Pi 2 Cluster , but until then (since his Tweets were not threaded), this is what happened on 20220209 as it taught me a few bits:

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Posted in Cloud, Cloudflare, Containers, Development, Docker, Hardware Development, Infrastructure, Internet, Kubernetes (k8n), LifeHacker, OpenSpeedTest, Power User, Raspberry Pi, SpeedTest | Leave a Comment »

I learned about the “YAML-NOrway Law.”

Posted by jpluimers on 2023/06/15

Every time I use YAML, I bump into things even I copy paste from exact working configurations.

Today I learned I’m not just alone, but there is even a term for it: “YAML-NOrway Law.”

[Wayback/Archive] I’d like to propose the “YAML-NOrway Law.” “Anyone who uses YAML long enough wil… | Hacker News

I’d like to propose the “YAML-NOrway Law.”

“Anyone who uses YAML long enough will eventually get burned when attempting to abbreviate Norway.”

Example:

  NI: Nicaragua
  NL: Netherlands
  NO: Norway # boom!

`NO` is parsed as a boolean type, which with the YAML 1.1 spec, there are 22 options to write “true” or “false.”[1] For that example, you have wrap “NO” in quotes to get the expected result.

This, along with many of the design decisions in YAML strike me as a simple vs. easy[2] tradeoff, where the authors opted for “easy,” at the expense of simplicity. I (and I assume others) mostly use YAML for configuration. I need my config files to be dead simple, explicit, and predictable. Easy can take a back seat.

[1]: [Wayback/Archive] http://yaml.org/type/bool.html [2]: [Wayback/Archive] https://www.infoq.com/presentations/Simple-Made-Easy

Even a key Ansible author seems to regret using YAML: [Archive] Kevin Honka on Twitter: “@hikhvar @isotopp jap :) Muss da immer an den Spruch des entwicklers von Ansible denken: Hätte ich gewusst, wie einfach es ist in Python eine DSL zu bauen, hätte ich nie YAML verwendet” / Twitter

Somewhere in the tread, Kris mentioned [Wayback/Archive] Code rant: The Configuration Complexity Clock:

It seems to be a recurring issue in both Kris’ and my life: One needs to actually fail in order to get a feel for reality.

Via [Archive] Kris on Twitter: “Die YAML Spezifikation gelesen. yaml-dox-url Jetzt habe ich Alpträume. “Erkläre Node Tags, Complex Keys mit ?, resolved und unresolved tags, und partial representation.”” / Twitter

[Wayback/Archive] YAML Ain’t Markup Language (YAML™) revision 1.2.2

–jeroen

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Posted in Configuration Management, Infrastructure, YAML | Leave a Comment »

GitLab pages on a custom domain are nice, but be aware of intermittent 502 and certificate errors

Posted by jpluimers on 2023/06/05

Reminder to self GitLab pages on the gitlab.com are free, so Setting up a GitLab project so it is served over https as a gitlab.io and a custom subdomain comes with two caveats:

  1. Intermittent HTTP error 502 Bad Gateway
  2. Intermittent NET::ERR_CERT_COMMON_NAME_INVALID (Chrome) or SSL_ERROR_BAD_CERT_DOMAIN (Firefox):

–jeroen

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Posted in Cloud, Development, GitLab, Infrastructure, Power User, Source Code Management | Leave a Comment »

The CPU load average metric often is not a good one to alert on

Posted by jpluimers on 2023/04/20

Boy I wish threads with more than one person could be saved by the ThreadReaderApp.

Anyway:

[WayBack] Thread by @mipsytipsy: oh boy.. i was just idly musing over how the single most ubiquitous/useless metric is “CPU load average”, lol i wonder if you could use CPU…

Jun 4th 2020

oh boy.. i was just idly musing over how the single most ubiquitous/useless metric is “CPU load average”, lol

i wonder if you could use CPU load alerts to score how modern and powerful a team’s toolchain is, like a Waffle House Index for tooling. 🤔

 

…oh oh! but i was gonna say, this thread between @drk and @shelbyspees is a killer nanotutorial in how to ask better questions about your code — where to start, how to drill down and dig in, how to instrument, and how to approach such an open-ended exploratory jaunt. 👏🐝❤️

it’s a really good illustration of this thing we end up saying all the time, which is “don’t fear the future, it is simpler and clearer and *easier* here! the way you are doing it NOW is the hard way!” 😖

time for cpu load average to go the way of the PC LOAD LETTER …

0:00
/ 0:01

 

 

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Posted in *nix, Cloud, Development, DevOps, Infrastructure, Power User, Software Development, Systems Architecture | Leave a Comment »

smile.amazon.de: AmazonSmile Is Ending (in fact it already has ended)

Posted by jpluimers on 2023/04/07

I missed this 2 weeks ago, but in fact “AmazonSmile Is Ending” means it has already ended. Amazon.de purchases do not help charity any more.

[Wayback/Archive] smile.amazon.de

AmazonSmile Is Ending

Thank you for your support over the past decade. We appreciate your help in donating more than $450 million across hundreds of thousands of charities worldwide. Moving forward, we are excited to focus on other philanthropic initiatives.

You can continue shopping on http://www.amazon.de for the same selection of products you know and love.

in German:

AmazonSmile wird eingestellt

Wir danken Ihnen für Ihre Unterstützung in den letzten sieben Jahren. Mit Ihrer Hilfe konnten hunderttausende gemeinnützige Organisationen weltweit mit mehr als 450 Millionen US-Dollar unterstützt werden. Amazon wird sein soziales Engagement künftig auf andere Bereiche fokussieren.

Sie können weiterhin auf http://www.amazon.de einkaufen, wo Sie die gleiche Produktauswahl vorfinden.

–jeroen

Posted in Amazon.com/.de/.fr/.uk/..., Cloud, Infrastructure | Leave a Comment »

Need to take a look a Scaleway

Posted by jpluimers on 2023/04/05

Based on

I need to take a look at Scaleway, at least at thee links via [Wayback/Archive] scaleway instance – Google Search:

Related blog post: Dave Anderson on Twitter: “Cool minor @Tailscale moment: I’m recommissioning a server that got moved from a different network, so all its network config was wrong, and generally I couldn’t get at it over the network, only IPKVM console. But then my ping over Tailscale started working?!” / Twitter

–jeroen

Posted in Cloud, Infrastructure, Power User, Scaleway, Scoop, Windows | 1 Comment »

howisthecloud (@howisthecloud) / Twitter

Posted by jpluimers on 2023/02/09

Getting the latest cloud outages is easy: just follow [Archive] howisthecloud (@howisthecloud) / Twitter

Feeding cloud provider statuses from all over the Internets. Currently tweeting AWS,SFDC,Heroku,GoogleApps,Azure,Sakura,Rackspace,Pivotal statuses. By

I used it to keep an eye on the december 2021 US-EAST-1 AWS outage I wrote about in Does it still hold: “Never keep anything important on AWS in US-EAST-1”?.

–jeroen

Posted in Amazon.com/.de/.fr/.uk/..., AWS Amazon Web Services, Azure Cloud, Cloud, Infrastructure, Uncategorized | Leave a Comment »

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