The layer-by-layer sweep that turns 'it's broken' into a named cause.
How this category fits together, bottom to top. Every green block is covered by a published issue — click it to go straight there.
3 issues covering 5 of the 12 topics here.
High load, memory and OOM, disk and I/O, network, and boot failures.
Severity, the Incident Commander role, blameless postmortems, follow-through.
32 error types across 5 layers, each with the production fix.
The other categories sitting alongside this one.