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unkinben 8eeca2d1fb Reflect externaldns TSIG key into the externaldns namespace (#285)
## Why

Step 1 of 3 in the external-dns → in-cluster bind migration. For external-dns to send RFC2136 updates to the in-cluster `bind-externaldns` primary, it must present the exact TSIG key the primary's `allow-update` accepts. The bind-operator generates that key material into Secret `externaldns-key-tsig` in `bind-internal`; reflecting it into the `externaldns` namespace removes the manual eyaml→Vault key sync and guarantees key parity.

## Changes

- Adds `spec.secretTemplate.annotations` to BindTSIGKey `externaldns-key` with the emberstack reflector hints: `reflection-allowed`, `reflection-allowed-namespaces: externaldns`, `reflection-auto-enabled`, `reflection-auto-namespaces: externaldns`.
- Regenerates `schemas/bind.unkin.net/bindtsigkey_v1alpha1.json` from the live CRD (deployed bind-operator v0.2.4 already exposes `secretTemplate` — the WIP branch's ">= v0.3.0" claim is stale) to add the `secretTemplate` property. Schema output is byte-identical to running `ci/generate-schemas.sh`.

`kubectl kustomize apps/overlays/au-syd1/bind-internal` builds clean and renders the annotations onto the BindTSIGKey.

## Verification (after merge)

```
kubectl -n externaldns get secret externaldns-key-tsig \
  -o jsonpath='{.data.secret} {.data.algorithm}{"\n"}'
```
Both `secret` and `algorithm` keys must be present (reflector mirrored the source Secret from bind-internal).

## Rollback

Revert this PR. The source Secret in bind-internal is unaffected; only the reflected mirror in `externaldns` is removed.

Merge order: this is PR 1/3. PR 2 (repoint external-dns) must not merge until the reflected secret is verified.

Reviewed-on: #285
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
2026-07-25 22:37:39 +10:00

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{
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"apiVersion": {
"type": "string"
},
"kind": {
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},
"metadata": {
"type": "object"
},
"spec": {
"properties": {
"algorithm": {
"default": "hmac-sha256",
"enum": [
"hmac-sha256",
"hmac-sha512",
"hmac-sha384",
"hmac-sha224",
"hmac-sha1",
"hmac-md5"
],
"type": "string"
},
"clusterRef": {
"type": "string"
},
"importExisting": {
"type": "boolean"
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"keyName": {
"type": "string"
},
"secretName": {
"type": "string"
},
"secretTemplate": {
"properties": {
"annotations": {
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"type": "string"
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"type": "object"
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"labels": {
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"type": "string"
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"pattern": "^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$",
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"pattern": "^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$",
"type": "string"
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"required": [
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"secretName": {
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}