Aleksei Sviridkin d466fd96b3 fix(rabbitmq): bound the topology operator Secret cache (#4130)
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## What this PR does

Fixes #4128.


`messaging-topology-operator` 1.14.2 caches **every Secret in the
cluster** — its `ClusterRole` grants `secrets: list, watch` cluster-wide
with no namespace or label restriction — and the vendored manifest
limits it to `500Mi`. On a cluster that has grown enough Secrets it
OOMKills and never recovers, because the initial `LIST` alone no longer
fits. While it is down, no topology CR reconciles for any tenant.

Measured on the affected cluster: 8 211 Secrets across 291 namespaces,
293 MB of Secret payload (87 % of it Helm release history), against 21
topology CRs and 1 `RabbitmqCluster`. Working set sat flat at 331–335 Mi
for 30+ hours, crossed 500Mi, then crashlooped 154 times. The operator
was caching 8 211 Secrets in order to read 2.

Upstream fixed exactly this, and it is not a bigger limit — their
default is still `512Mi`:

- `329aa9e4e` (2026-06-30, released in v1.20.0) gates the Secret
informer on `rabbitmq.com/topology-operator: "true"`, to bound "memory
usage on large clusters".
- `0850c3ae8` (2026-07-22, released in v1.20.1) bypasses the cache for
`Service` reads.

v1.20.2 is the current patch release carrying both; v1.19.x and earlier
carry neither. This PR refreshes the vendored manifest to v1.20.2
through the package's existing `make update` pipeline (fetch, drop the
`Namespace` object, rewrite `rabbitmq-system` →
`cozy-rabbitmq-operator`).

**The bump alone would break every install**, which is why the app chart
moves with it. The app chart's credentials Secret is referenced by
`User.spec.importCredentialsSecret`, and from 1.20 the admission webhook
rejects a user-provided Secret without the label:

```
secret %q must have label rabbitmq.com/topology-operator=true to be used by the Topology Operator
```

Verified against the 1.20.2 source, two things deliberately do **not**
change:

- The `RabbitmqCluster` `default-user` Secret needs no label —
`rabbitmqclient/cluster_reference.go` reads it through `apiReader.Get`,
uncached.
- The `Status.Binding` contract is unchanged since 1.14.2, so the
vendored `cluster-operator` 2.9.0 stays compatible and is left alone to
keep this PR focused.

The v1.20.2 manifest is self-contained: it ships its own `Issuer` and
both `Certificate` objects (webhook + metrics), and adds probes, a
`securityContext` that satisfies `restricted` PodSecurity, a defaulting
`MutatingWebhookConfiguration` and secure metrics. Same 13 CRDs, none
added or removed.

### Tests

- `packages/apps/rabbitmq/tests/user_credentials_test.yaml` renders two
users and asserts that each `User` imports its own
`<release>-<user>-credentials` Secret and that every credentials Secret
carries `rabbitmq.com/topology-operator: "true"`. Deleting the label
line from the template fails it.
- The rabbitmq e2e suite now creates its cluster with one user and
asserts `User/rabbitmq-test-app` reaches `Ready`, so the webhook and the
User reconcile run against the real 1.20.2 operator. Its `catch` gains a
describe of that `User` and the topology operator's logs.

### Upgrade path

Existing installs carry unlabeled credentials Secrets until each
tenant's `rabbitmq-*` HelmRelease re-renders. No migration is added: in
1.20.2 the User controller watches Secrets and maps an import Secret
back to its Users through the `.spec.importCredentialsSecret.name` field
index (`secretToUserRequests`), so relabelling the Secret requeues the
User immediately rather than on the next interval, and nothing is
removed from the broker in between. The import path no longer writes
`<user>-user-credentials`, and nothing in this repo reads the ones
1.14.2 left behind.

### Verification

- `make generate` in both touched packages — no diff beyond the
intentional changes
- `helm unittest packages/apps/rabbitmq` — 103/103, and the new suite
fails with the label removed

### Screenshots

No UI changes.

### Downstream repositories

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Walked the trigger map against the diff, file by file.
`packages/apps/rabbitmq/templates/rabbitmq.yaml` adds one label to a
rendered Secret: no package added or renamed, no `values.schema.json`
field, no version enum, no `values.yaml` default, no `release.prefix`,
and the Secret's *name* is unchanged, so the provider's literal-name
lookups are unaffected.
`packages/system/rabbitmq-operator/templates/messaging-topology-operator.yml`
is a vendored upstream manifest for an already-present component: no
package layout change, no `cozyrds` rename, no namespace rename, no
installer or platform values key. `packages/apps/rabbitmq/tests/` and
`hack/e2e-chainsaw/rabbitmq/` are test-only and appear nowhere in the
map.

- [x] No downstream repository is affected by this change
- [ ] [cozystack/website](https://github.com/cozystack/website) -
follow-up:
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[cozystack/terraform-provider-cozystack](https://github.com/cozystack/terraform-provider-cozystack)
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### Release note

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```release-note
fix(rabbitmq): update messaging-topology-operator to 1.20.2, which bounds its Secret cache to Secrets labeled `rabbitmq.com/topology-operator=true` instead of caching every Secret in the cluster. Before this, the operator's memory grew with the cluster's total Secret count and OOMKilled against its 500Mi limit on large clusters, stopping reconciliation of all Queue, Exchange, Binding, User, Permission, Vhost and Policy resources for every tenant. The managed RabbitMQ chart now labels the credentials Secret it creates, so existing users need no action. If you manage topology resources by hand and point `connectionSecret`, `importCredentialsSecret`, `uriSecret` or `upstreamSecret` at your own Secret, add the label `rabbitmq.com/topology-operator: "true"` to it or the admission webhook will reject the resource.
```


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added configuration options for resource cleanup, queue types,
connection and channel limits, shovel queue arguments, and federation
settings.
* Added metrics support, health checks, leader-election configuration,
and queue webhook capabilities.
* Improved compatibility of generated credential Secrets with the
RabbitMQ Topology Operator.
* **Bug Fixes**
* Improved validation and documentation for topology resources,
including requiring an exchange for topic permissions.
  * Updated operator components and Kubernetes resource configuration.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-09-29 19:25:30 +03:00
2025-10-08 09:43:34 +05:00
2024-02-08 12:04:32 +01:00

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