c9d221d578
## Context
Phase 1 of the state-drift consolidation audit (plan Wave 3) identified that
the entire repo leans on a repeated `lifecycle { ignore_changes = [...dns_config] }`
snippet to suppress Kyverno's admission-webhook dns_config mutation (the ndots=2
override that prevents NxDomain search-domain flooding). 27 occurrences across
19 stacks. Without this suppression, every pod-owning resource shows perpetual
TF plan drift.
The original plan proposed a shared `modules/kubernetes/kyverno_lifecycle/`
module emitting the ignore-paths list as an output that stacks would consume in
their `ignore_changes` blocks. That approach is architecturally impossible:
Terraform's `ignore_changes` meta-argument accepts only static attribute paths
— it rejects module outputs, locals, variables, and any expression (the HCL
spec evaluates `lifecycle` before the regular expression graph). So a DRY
module cannot exist. The canonical pattern IS the repeated snippet.
What the snippet was missing was a *discoverability tag* so that (a) new
resources can be validated for compliance, (b) the existing 27 sites can be
grep'd in a single command, and (c) future maintainers understand the
convention rather than each reinventing it.
## This change
- Introduces `# KYVERNO_LIFECYCLE_V1` as the canonical marker comment.
Attached inline on every `spec[0].template[0].spec[0].dns_config` line
(or `spec[0].job_template[0].spec[0]...` for CronJobs) across all 27
existing suppression sites.
- Documents the convention with rationale and copy-paste snippets in
`AGENTS.md` → new "Kyverno Drift Suppression" section.
- Expands the existing `.claude/CLAUDE.md` Kyverno ndots note to reference
the marker and explain why the module approach is blocked.
- Updates `_template/main.tf.example` so every new stack starts compliant.
## What is NOT in this change
- The `kubernetes_manifest` Kyverno annotation drift (beads `code-seq`)
— that is Phase B with a sibling `# KYVERNO_MANIFEST_V1` marker.
- Behavioral changes — every `ignore_changes` list is byte-identical
save for the inline comment.
- The fallback module the original plan anticipated — skipped because
Terraform rejects expressions in `ignore_changes`.
- `terraform fmt` cleanup on adjacent unrelated blocks in three files
(claude-agent-service, freedify/factory, hermes-agent). Reverted to
keep this commit scoped to the convention rollout.
## Before / after
Before (cannot distinguish accidental-forgotten from intentional-convention):
```hcl
lifecycle {
ignore_changes = [spec[0].template[0].spec[0].dns_config]
}
```
After (greppable, self-documenting, discoverable by tooling):
```hcl
lifecycle {
ignore_changes = [spec[0].template[0].spec[0].dns_config] # KYVERNO_LIFECYCLE_V1
}
```
## Test Plan
### Automated
```
$ rg -c 'KYVERNO_LIFECYCLE_V1' stacks/ --include='*.tf' --include='*.tf.example' \
| awk -F: '{s+=$2} END {print s}'
27
$ git diff --stat | grep -E '\.(tf|tf\.example|md)$' | wc -l
21
# All code-file diffs are 1 insertion + 1 deletion per marker site,
# except beads-server (3), ebooks (4), immich (3), uptime-kuma (2).
$ git diff --stat stacks/ | tail -1
20 files changed, 45 insertions(+), 28 deletions(-)
```
### Manual Verification
No apply required — HCL comments only. Zero effect on any stack's plan output.
Future audits: `rg 'KYVERNO_LIFECYCLE_V1' stacks/ | wc -l` must grow as new
pod-owning resources are added.
## Reproduce locally
1. `cd infra && git pull`
2. `rg 'KYVERNO_LIFECYCLE_V1' stacks/` → expect 27 hits in 19 files
3. Grep any new `kubernetes_deployment` for the marker; absence = missing
suppression.
Closes: code-28m
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
91 lines
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91 lines
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# =============================================================================
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# Stack Template — Copy this directory to stacks/<your-app>/ and customize.
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# Then submit a PR to the infra repo.
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# =============================================================================
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#
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# Prerequisites:
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# 1. You are a namespace-owner in k8s_users (Vault KV secret/platform)
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# 2. Your namespace already exists (created by vault stack)
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# 3. You have Vault CLI access: vault login -method=oidc
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#
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# Steps:
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# 1. cp -r stacks/_template stacks/myapp
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# 2. mv stacks/myapp/main.tf.example stacks/myapp/main.tf
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# 3. Search-replace <placeholders> below
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# 4. Store secrets: vault kv put secret/<your-username>/myapp KEY=value
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# 5. git checkout -b feat/myapp && git push
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# 6. Open PR, get reviewed, merge
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# 7. Admin runs: cd stacks/myapp && terragrunt apply
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# =============================================================================
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variable "tls_secret_name" {
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type = string
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sensitive = true
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}
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# NOTE: Your namespace is auto-created by the vault stack from k8s_users.
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# Only add a kubernetes_namespace resource if you need a SEPARATE namespace
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# for this specific app (not your user namespace).
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module "tls_secret" {
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source = "../../modules/kubernetes/setup_tls_secret"
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namespace = "<your-namespace>" # e.g., "anca"
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tls_secret_name = var.tls_secret_name
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}
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resource "kubernetes_deployment" "app" {
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metadata {
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name = "<app-name>"
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namespace = "<your-namespace>"
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}
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spec {
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replicas = 1
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selector {
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match_labels = { app = "<app-name>" }
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}
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template {
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metadata {
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labels = { app = "<app-name>" }
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}
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spec {
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container {
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name = "<app-name>"
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image = "<dockerhub-user>/<app-name>:<tag>"
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port {
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container_port = 8080 # Change to your app's port
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}
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resources {
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requests = { cpu = "10m", memory = "256Mi" }
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limits = { memory = "256Mi" }
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}
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}
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}
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}
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}
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lifecycle {
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ignore_changes = [spec[0].template[0].spec[0].dns_config] # KYVERNO_LIFECYCLE_V1
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}
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}
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resource "kubernetes_service" "app" {
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metadata {
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name = "<app-name>"
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namespace = "<your-namespace>"
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}
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spec {
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selector = { app = "<app-name>" }
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port {
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port = 80
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target_port = 8080 # Match container_port above
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}
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}
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}
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module "ingress" {
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source = "../../modules/kubernetes/ingress_factory"
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namespace = "<your-namespace>"
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name = "<app-name>"
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tls_secret_name = var.tls_secret_name
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dns_type = "proxied" # "proxied" (Cloudflare CDN), "non-proxied" (direct A/AAAA), or "none"
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protected = false # Set true to require Authentik login
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}
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