## Context
Wave 3B of the state-drift consolidation audit (plan section "Shared Kyverno
drift-suppression") identified a second Kyverno admission-induced drift
class, complementary to the `# KYVERNO_LIFECYCLE_V1` ndots dns_config suppression
landed in c9d221d5. The ClusterPolicy `sync-tls-secret` runs on every
`kubernetes_secret` created via `modules/kubernetes/setup_tls_secret` and
stamps the following labels on the generated Secret:
app.kubernetes.io/managed-by = kyverno
generate.kyverno.io/policy-name = sync-tls-secret
generate.kyverno.io/policy-namespace = ""
generate.kyverno.io/rule-name = sync-tls-secret
generate.kyverno.io/source-kind = Secret
generate.kyverno.io/source-namespace = kyverno
generate.kyverno.io/source-uid = <uid>
generate.kyverno.io/source-version = v1
generate.kyverno.io/source-group = ""
generate.kyverno.io/clone-source = ""
Terraform does not manage any labels on this Secret, so every `terragrunt
plan` showed all 10 labels as `-> null`. This was observed on the dawarich
stack (one of the 93 callers of setup_tls_secret) and reproduces identically
on any stack that consumes this module. Root cause ticket: beads `code-seq`.
## This change
Adds a single `lifecycle { ignore_changes = [metadata[0].labels] }` block
to `modules/kubernetes/setup_tls_secret/main.tf`. One module edit,
93 callers' `module.tls_secret.kubernetes_secret.tls_secret` drift cleared.
The marker comment `# KYVERNO_LIFECYCLE_V1` stays consistent with the Wave 3A
convention (c9d221d5) — the rule now stands for "any Kyverno-induced
drift", not only ndots dns_config. AGENTS.md's "Kyverno Drift Suppression"
section will grow to catalog the fields ignored; this commit keeps the scope
tight to the code change.
## What is NOT in this change
- Namespace-level Goldilocks label drift (`goldilocks.fairwinds.com/vpa-update-mode = off`)
— a different admission controller, different resource, different fix.
Filed as beads `code-dwx` for a follow-up sweep across all 105 Tier 1
stacks.
- AGENTS.md documentation expansion — will land alongside the Goldilocks
sweep so both patterns are catalogued together.
- Retroactive marker on other Kyverno-generated Secrets — the sync-tls-secret
policy is the only generate policy that produces Secrets in this repo
(verified: `kubectl get cpol -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}'` + cross-reference).
## Verification
Dawarich stack:
```
Before: Plan: 0 to add, 2 to change, 0 to destroy.
(kubernetes_namespace.dawarich — Goldilocks drift, untouched)
(module.tls_secret.kubernetes_secret.tls_secret — Kyverno label drift)
After: Plan: 0 to add, 1 to change, 0 to destroy.
(kubernetes_namespace.dawarich — Goldilocks drift, untouched)
```
Closes: code-seq (partial — tls_secret branch)
Refs: code-dwx (Goldilocks follow-up)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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