docs: fix Helm TLS/ingress value keys in admin/setup (#28087) - #28162
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## What
Fix the Helm values in the TLS setup step of
`docs/admin/setup/index.md`. The documented keys are silently ignored by
the chart, so TLS appears configured but isn't.
## Changes
- `coder.tls.secretName` (singular) → `coder.tls.secretNames` (a list).
The chart key is `secretNames`.
- `coder.ingress.secretName` / `coder.ingress.wildcardSecretName` →
nested under `coder.ingress.tls.secretName` /
`coder.ingress.tls.wildcardSecretName`, where the chart actually reads
them.
- Added `coder.ingress.tls.enable: true` so the ingress-termination
example actually enables TLS.
All keys verified against `helm/coder/values.yaml` on `main`
(`coder.tls.secretNames`,
`coder.ingress.tls.{enable,secretName,wildcardSecretName}`). Surfaced by
the runtime drift sweep. The example now parses to the correct chart
structure.
Linear:
[DOCS-643](https://linear.app/codercom/issue/DOCS-643/docs-fix-helm-tlsingress-value-keys-in-adminsetup-secretnames)
> This PR was created with AI assistance (Coder Agents).
(cherry picked from commit 5b97d99)
nickvigilante
approved these changes
Aug 14, 2026
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Backport of #28087
Original PR: #28087 — docs: fix Helm TLS/ingress value keys in admin/setup
Merge commit: 5b97d99
Requested by: @nickvigilante