No description
Graham McIntire
0bc8af22dd
Root cause of the deadlock prod hit today:
- prop-backfill's podAntiAffinity matched `app: prop`, which applies to
backfill pods themselves as well as hot pods.
- The hot Deployment runs maxSurge=1/maxUnavailable=1 with HPA min 2 /
max 5; when HPA was pegged at max and a rollout began, the old
ReplicaSet's requiredDuringScheduling/IgnoredDuringExecution rule
stayed pinned on every already-running hot pod.
- backfill's rule then excluded new hot pods from every physical host
that had an app=prop pod on it, which was all of them, and the
rollout couldn't progress because no old hot pod could come down
until a new one went Ready first.
Narrowing the selector to `{app: prop, tier: hot}` means:
- backfill never constrains itself (it carries tier=backfill).
- Hot pods carry no anti-affinity of their own, so HPA can continue
past the 4-physical-host count by co-locating when it has to.
- Backfill still lands on whichever physical host hot pods haven't
filled up, which is the original intent.
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| k8s | ||
| lib | ||
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| notebooks | ||
| priv | ||
| rel | ||
| rust/prop_grid_rs | ||
| scripts | ||
| test | ||
| vendor | ||
| .credo.exs | ||
| .dockerignore | ||
| .formatter.exs | ||
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| .tool-versions | ||
| AGENTS.md | ||
| algo.md | ||
| app.json | ||
| CLAUDE.md | ||
| Dockerfile | ||
| elevation.md | ||
| LICENSE | ||
| mix.exs | ||
| mix.lock | ||
| prediction.md | ||
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Microwaveprop
To start your Phoenix server:
- Run
mix setupto install and setup dependencies - Start Phoenix endpoint with
mix phx.serveror inside IEx withiex -S mix phx.server
Now you can visit localhost:4000 from your browser.
Ready to run in production? Please check our deployment guides.
Learn more
- Official website: https://www.phoenixframework.org/
- Guides: https://hexdocs.pm/phoenix/overview.html
- Docs: https://hexdocs.pm/phoenix
- Forum: https://elixirforum.com/c/phoenix-forum
- Source: https://github.com/phoenixframework/phoenix