Meetups/Infra/2025-09-08

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Elan gave briefing on k8s cluster work. We talked about DNS and netboot. Fixing website issues. Banned 2 AliCloud IP ranges, and 2 Google Cloud IP ranges with iptables, drop traffic.


Introductions[edit]

  • [name] - [background]. [goals for meetup, or interests to explore]
  • Loren -- background in scraping :sheepish:,
  • Frank -- bg in home labbing and clusters
  • (x)
  • Max -- not here for infra meetup, but like it. Hanging out. Looking for a more powerful server on craigslist or PublicSurplus.
  • Elan -- very much into kubernetes and clusters these days
  • Alex -- bg in ml, messing around with Ray Serve
  • Doug -- i like computers, and fixing DMARC (now fixed, intro story)
  • Erik -- kinda like to plug things in


Lesson or Demo[edit]

  • Read aloud: clarify for meetup. We are taking notes in a riseup pad (or I am--help appreciated, and links). We have meeting notes posted to the wiki. noisebridge.net, search Infra, or Meetups/Infra. (the Infrastructure page has a disambiguation link.)
  • Shell, web services, self-hosting, networking!


  • power meter discovered in cleaning of electronics, idles at sub-50W. 5 pis, switch, & ThinkCenter.
  • Elan, DNS woes. netboot up and running.
to support netboot, need to configure router to do a few things, include TFTP(d)
pi hole supports 2 things, helps solve - 1) TFTP 2) UEFI boot
notice something called ExternalDNS for k8s


someone else using talos k8s os

https://www.noisebridge.net/wiki/NoiseGarden cluster
bootstraps, from github scripts (home rolled ansible) from docs
  • topics
distributed ML task running
acme cert issuance / dns-01 p cool, should be easy to set up
gpu performance night, nvidia guy, who moves a petabyte of data a month, for mercedes self driving car. 
small cluster sizing, what can you do with 5 pis, what can't you
not quite distributed gpu performance, distributed llama. What can you do? what are the costs?.  Small llm running. llama.cpp, vllm - less backward compatilibity. vllm some RocM support.
with erik, private LTE. weekly sync.  Magma core issues. Can run a private LTE network with citizen radio.


Elan debug story

Questions, Discussion, or Coworking[edit]

  • [Issue]

For next time[edit]

Questions[edit]

Readings & Exercises[edit]

  • Readings
  • Exercises

Join online[edit]

  • Try it yourself!
    • Join libera.chat #nb-meetup-infra

https://www.noisebridge.net/wiki/Meetups/Infra

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