chore: remove kafka pkg, move influxdb off bitnami mirror (IP-3481)

[tvc-jeffwelling]

What: Removes the last two Bitnami references in CTF (IP-3481, validator rows 4–5):

• Deletes lib/k8s/pkg/helm/kafka/kafka.go — the Bitnami kafka chart wrapper. Zero importers org-wide (code search, incl. public GitHub).
• Rewrites lib/k8s/pkg/helm/influxdb/influxdb.go off the paid Bitnami mirror:
  • Chart: ${BITNAMI_PRIVATE_REGISTRY}/charts/debian-12/influxdb:7.1.47 → InfluxData's own chart, pinned influxdb-4.12.5.tgz release URL. Helm ignores --version for URL refs, so the chart version is pinned in the URL and the NewVersioned argument is now ignored; the signature is kept so the sole consumer keeps compiling.
  • Configurability: the chart version is pinned in the influxdataChartURL const (helm ignores --version for URL refs) — bumping it later means editing the const. The influxdb app version (image.tag) and all other chart values remain caller-overridable via props, as before.
  • Image: mirror containers/debian-12:3.4.2 → docker-io/library/influxdb:1.8.10-alpine via the prod ECR pull-through cache (804282218731.dkr.ecr.us-west-2.amazonaws.com), overridable with the new INFLUXDB_IMAGE_REGISTRY env var in lib/k8s/config/overrides.go.
  • Resource limits/requests (19Gi/6 CPU, 16Gi/5 CPU) carried over unchanged; Bitnami-only values (auth.enabled, probe disables, global.security.allowInsecureImages) dropped.
• Two drive-by files (framework/components/blockchain/sui_faucet_test.go, wasp/benchspy/report.go) are pre-commit hook auto-fixes (golangci-lint --fix) that the repo's hooks apply on any commit; not related to this change.

Blast radius: kafka has zero consumers; influxdb has exactly one — smartcontractkit/atlas tests/load/graphql/graphql_test.go (k8s load test, untouched since 2025-01). Merge holds until atlas owners confirm TestDeployGraphqlSetup against this branch.

Open question: the pinned 1.8.10-alpine is the influxdata chart's default app version; the mirror previously served 3.4.2. If the atlas test speaks the v2/v3 query API we need the influxdb2 chart instead — reviewer input welcome.

Verification (local): go build ./..., go mod tidy check, golangci-lint run ./k8s/... (0 issues), go test -race ./k8s/config — all green.

Why --no-verify: same pre-existing hook breakage as documented in #2804 (just lint-all → missing havoc, self-contradicting hooks); CI runs per-module lint + tests instead — see probe #2803. On merge, bitnami-gh.py validate should show 5/5 for this repo.

[github-actions]

📊 API Diff Results

No changes detected for module github.com/smartcontractkit/chainlink-testing-framework/framework

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[Copilot]

🟡 Changes recommended

Resolve the InfluxDB override forwarding, versioning, API compatibility, and persistence behavior concerns.

Get a fresh assessment by requesting another Copilot review.

Pull request overview

Removes the unused Kafka wrapper and migrates InfluxDB away from Bitnami, with incidental formatting fixes.

Changes:

• Deletes the unused Kafka Helm package.
• Pins InfluxDB to InfluxData’s chart and adds configurable ECR image support.
• Applies incidental fixes in Benchspy and Sui files.

File summaries

File	Summary
wasp/benchspy/report.go	Applies report directory fix.
lib/k8s/pkg/helm/kafka/kafka.go	Removes unused Kafka wrapper.
lib/k8s/pkg/helm/influxdb/influxdb.go	Migrates chart and image; review identified forwarding, versioning, API compatibility, and persistence concerns.
lib/k8s/config/overrides.go	Adds the InfluxDB registry override.
framework/components/blockchain/sui_faucet_test.go	Applies formatting cleanup.

Review details

Suppressed comments (3)

lib/k8s/pkg/helm/influxdb/influxdb.go:85

• When the test uses CTF's remote runner, this override is read in the runner process, but jobEnvVars only forwards the allowlisted variables in lib/k8s/environment/runner.go:426-444; the new INFLUXDB_IMAGE_REGISTRY is not included. Consequently, setting this variable on the invoking process is silently lost for remote-runner deployments, so the documented registry override does not work there. Add it to the runner's forwarded-variable list (and cover the forwarding path).

func registry() string {
	if reg := os.Getenv(config.EnvVarInfluxdbImageRegistry); reg != "" {
		return reg
	}
	return defaultImageRegistry

lib/k8s/pkg/helm/influxdb/influxdb.go:66

• This changes the runtime from the previous 3.4.2 image to InfluxDB 1.8.10, not just the registry; the referenced chart's appVersion is also 1.8.10. The unchanged Atlas load test may use v2/v3 endpoints, in which case Helm can report a ready pod while its queries fail. Please verify the consumer against this API before merging and select the matching InfluxDB chart/image if necessary.

			"tag":        "1.8.10-alpine",

lib/k8s/pkg/helm/influxdb/influxdb.go:67

• The InfluxData 4.12.5 chart defaults persistence.enabled to true, whereas the previous Bitnami values explicitly set it to false. Because this override is omitted here, deployments now create an 8 GiB volumeClaimTemplate instead of using emptyDir, which can block clusters without a default StorageClass and changes the test environment's storage behavior. Please carry over persistence.enabled: false (or explicitly provision/document the new persistent-storage requirement).

		"image": map[string]interface{}{
			"repository": fmt.Sprintf("%s/docker-io/library/influxdb", reg),
			"tag":        "1.8.10-alpine",
		},

• Files reviewed: 4/5 changed files
• Comments generated: 1
• Review effort level: Lite

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[tvc-jeffwelling]

Kept deliberately. The only caller org-wide is atlas's NewVersioned("5.9.8", nil). Chart versions don't map between the old Bitnami chart and the InfluxData chart, so any previously passed version is meaningless after the swap; rejecting non-empty would panic that caller at runtime, and removing the constructor breaks its build. The doc comment on NewVersioned notes the argument is ignored. Happy to drop the constructor in a follow-up once atlas migrates off it.

[tvc-jeffwelling]

The two red checks — api-diff / Analyze (lib) and api-diff / Analyze (wasp) — are not caused by this change. Same verification approach as #2804: probe PR #2803 (empty commit) established that this repo's CI gate is per-module lint + the test matrix, green on an empty change; nothing here touches the api-diff workflow.

The current api-diff failures are a tool-install breakage. From the failed job logs (run 35036948957):

go: golang.org/x/exp/cmd/apidiff@latest: golang.org/x/exp@v0.0.0-20260908205506-85c1c2202aba requires go >= 1.26.0 (running go 1.25.0; GOTOOLCHAIN=local)

The workflow installs apidiff@latest at run time; the x/exp release of 2026-09-08 (after #2803 ran) moved its floor past the job's pinned Go 1.25.0. Both jobs die at install, before analyzing a single file — any branch fails these identically today. Repo-infra fix (pin apidiff or float the toolchain) is out of scope here; flagging for the repo owners.

One consequence worth stating: because the analyzer never ran, the intentional API break in this PR — removal of the exported lib/k8s/pkg/helm/kafka package — has not been machine-diffed. Zero importers org-wide per code search, but reviewers please eyeball that explicitly.

All other completed checks are green, including per-module lint and unit tests.