~/talk

An SRE Guide to Linux Kernel Upgrades

on YouTube 34m
Talkat SREcon23 Asia/Pacific · 2023-06-14..06-16· [linux-and-operating-systems, devops-and-delivery]

speaker

name:Ignat Korchagin
website:https://pqsec.org

resources

video:https://youtu.be/4zrcHnavdfA
slides:none on file

summary

Explains that Linux kernel bugfix releases arrive weekly and often matter: on the 5.15 branch there are 116 bugfix releases with 59 over 100 commits, 21 over 200 and eight over 500; 90 of 113 releases include CVE patches. Cloudflare’s A/B move from 5.4 to 5.10 saves about 4.5 GB RAM per server. Recommends weekly bugfix upgrades, automated staged reboots with one-by-one draining and metrics-driven acceptance tests, and using LTS kernels when major-version testing is costly.

AI-written summary · about

chapters (5)

  1. 0:00The risks of not patching
  2. 10:22Common industry antipatterns
  3. 16:25Inherent safety in kernel deploys
  4. 19:37Demystifying kernel releases
  5. 27:52Strategies for modern patching

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