srchilukoori opened a new pull request, #66507:
URL: https://github.com/apache/airflow/pull/66507
## Description
K8S system tests fail intermittently when Docker Hub anonymous-pull rate
limits are exhausted. The Helm chart's postgresql subchart pulls
`bitnamilegacy/postgresql:16.1.0-debian-11-r15` inside Kind at pod scheduling
time — unauthenticated and without retry logic. When the runner IP's quota is
spent, PostgreSQL never starts and all Airflow pods enter CrashLoopBackOff.
PR #66423 added `K8S_TEST_IMAGES_TO_PRELOAD` with retry-on-429 and `kind
load` to eliminate this class of flake, but the postgresql image was not
included.
## Changes
- `dev/breeze/src/airflow_breeze/commands/kubernetes_commands.py`: Add
`bitnamilegacy/postgresql:16.1.0-debian-11-r15` to `K8S_TEST_IMAGES_TO_PRELOAD`
## Root Cause
The image is tagged (not `:latest`), so kubelet defaults to
`imagePullPolicy: IfNotPresent`. Once pre-loaded via `kind load docker-image`,
kubelet finds it locally and never reaches Docker Hub.
```
# Before — postgresql not in the pre-load list, pulled live inside Kind
K8S_TEST_IMAGES_TO_PRELOAD: tuple[str, ...] = (
"alpine:3.23",
"busybox:1.37",
"ubuntu:24.04",
)
# After — postgresql pre-loaded with retry-on-429, then kind-loaded
K8S_TEST_IMAGES_TO_PRELOAD: tuple[str, ...] = (
"alpine:3.23",
"bitnamilegacy/postgresql:16.1.0-debian-11-r15",
"busybox:1.37",
"ubuntu:24.04",
)
```
Evidence from two unrelated PRs:
- PR #66420 (1-line comment change): `ErrImagePull: 429 Too Many Requests`
on `bitnamilegacy/postgresql` — 5/6 K8S jobs passed, 1 failed
- PR #65840 (sphinx theme workspace): `TLS handshake timeout` pulling
`bash:latest` — 35/36 K8S jobs passed, 1 failed
---
##### Was generative AI tooling used to co-author this PR?
- [X] Yes — Claude Opus 4.6
---
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