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Viktor Barzin e12c7b43e4 [mailserver] Pin dovecot_exporter to SHA + add Diun [ci skip] 
## Context

`viktorbarzin/dovecot_exporter:latest` was consumed with `IfNotPresent`
pull, which means whichever node landed the pod kept whatever digest
was cached from an earlier pull. A SHA-level pin is the reproducibility
baseline this repo uses for every other home-built image
(`headscale`, `excalidraw`, `linkwarden`).

## This change

- Pins `dovecot-exporter` container image to
  `viktorbarzin/dovecot_exporter@sha256:1114224c...` — the digest the
  pod is actually running today (captured from live `imageID`).
- Enables Diun tag watching on the mailserver Deployment
  (`diun.enable=true`, `diun.include_tags=^latest$`) so new `:latest`
  digests trigger a notification rather than silently landing on the
  next `IfNotPresent` miss.

Deviation from task spec (code-cno): the task asked for an 8-char SHA
*tag*, but Docker Hub only publishes `:latest` for this image — a SHA
tag doesn't exist. Used the digest-pin pattern already established at
`stacks/headscale/modules/headscale/main.tf:204` instead; Diun watches
the `:latest` tag for drift, which is the equivalent notification.

## What is NOT in this change

- Volume-mount ordering drift on `kubernetes_deployment.mailserver`
  (pre-existing; tolerated by Waves 1+2).
- Splitting the metrics port into its own Service (code-izl).

## Test Plan

### Automated
```
$ kubectl get pod -n mailserver -l app=mailserver \
    -o jsonpath='{.items[0].spec.containers[*].image}'
docker.io/mailserver/docker-mailserver:15.0.0 \
  viktorbarzin/dovecot_exporter@sha256:1114224c9bf0261ca8e9949a6b42d3c5a2c923d34ca4593f6b62f034daf14fc5

$ kubectl get deployment -n mailserver mailserver \
    -o jsonpath='{.spec.template.metadata.annotations}'
{"diun.enable":"true","diun.include_tags":"^latest$"}

$ kubectl rollout status deployment/mailserver -n mailserver
deployment "mailserver" successfully rolled out
```

### Manual Verification
1. Push a new `:latest` digest to the exporter image (or wait for one).
2. Check Diun notifier output: a tag event for `^latest$` should fire.
3. `kubectl describe deployment/mailserver -n mailserver` shows the
   digest pin unchanged until someone rebumps it.

## Reproduce locally
1. `kubectl -n mailserver get pod -l app=mailserver -o yaml | \
     grep -A1 dovecot_exporter`
2. Expected: `image: viktorbarzin/dovecot_exporter@sha256:1114224c...`.

Closes: code-cno

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-19 10:26:31 +00:00
..
_template [infra] Establish KYVERNO_LIFECYCLE_V1 drift-suppression convention [ci skip] 2026-04-18 14:15:51 +00:00
actualbudget [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
affine [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
authentik [infra] Adopt Authentik catch-all Proxy Provider + Application into TF (Wave 6a) 2026-04-18 22:48:26 +00:00
beads-server [beads-server] Auto-dispatch agent beads via CronJobs 2026-04-18 22:35:46 +00:00
blog [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
broker-sync broker-sync: chown fidelity_storage_state to broker uid in init container 2026-04-18 23:22:43 +00:00
calico [infra] Partial Calico adoption: namespaces only (Wave 5b) 2026-04-18 22:52:56 +00:00
changedetection [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
city-guesser [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
claude-agent-service [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
claude-memory [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
cloudflared [mailserver] Route DMARC rua/ruf to dmarc@viktorbarzin.me [ci skip] 2026-04-18 23:49:14 +00:00
cnpg [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
coturn [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
crowdsec [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
cyberchef [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
dashy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
dawarich [dawarich] Re-enable Sidekiq worker with resource limits + probes 2026-04-18 21:13:05 +00:00
dbaas [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
descheduler [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
diun [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
ebook2audiobook [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ebooks [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
echo [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
excalidraw [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
external-secrets [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
f1-stream [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
foolery [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
forgejo [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
freedify [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
freshrss [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
frigate [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
grampsweb [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
hackmd [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
headscale [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
health [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
hermes-agent [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
homepage [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
immich [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
infra [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
infra-maintenance [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
insta2spotify [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
isponsorblocktv [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
jsoncrack [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
k8s-dashboard [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
k8s-portal [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
kms [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
kured [infra] Adopt kured + sentinel-gate into Terraform (Wave 5a) 2026-04-18 22:33:29 +00:00
kyverno [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
linkwarden [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
local-path [infra] Adopt local-path-provisioner into Terraform (Wave 5c) 2026-04-18 22:39:55 +00:00
mailserver [mailserver] Pin dovecot_exporter to SHA + add Diun [ci skip] 2026-04-19 10:26:31 +00:00
matrix [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
meshcentral [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
metallb [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
metrics-server [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
monitoring [monitoring] Scrape mailserver Dovecot exporter + near-limit alerts 2026-04-19 00:24:12 +00:00
n8n [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
navidrome [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
netbox [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
networking-toolbox [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nextcloud [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nfs-csi [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
novelapp [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ntfy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nvidia [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
onlyoffice [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
openclaw [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
osm_routing [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
owntracks [owntracks] Bridge Recorder → Dawarich via Lua hook script 2026-04-18 23:47:22 +00:00
paperless-ngx [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
payslip-ingest [payslip-ingest] Move Payslips datasource 'database' into jsonData 2026-04-18 23:23:07 +00:00
phpipam [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
platform [infra] Add Cloudflare provider to all stack lock files and generated providers 2026-04-16 16:31:36 +00:00
plotting-book [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
poison-fountain [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
priority-pass [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
privatebin [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
proxmox-csi [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
pvc-autoresizer [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
rbac [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
real-estate-crawler [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
redis [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
reloader [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
resume [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
reverse-proxy [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
rybbit [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
sealed-secrets [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
send [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
servarr [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
shadowsocks [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
speedtest [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
status-page [infra] Establish KYVERNO_LIFECYCLE_V1 drift-suppression convention [ci skip] 2026-04-18 14:15:51 +00:00
stirling-pdf [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
tandoor [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
technitium [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
terminal [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
tor-proxy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
trading-bot [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
traefik [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
travel_blog [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
tuya-bridge [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
uptime-kuma [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
url [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vault [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vaultwarden [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vpa [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
wealthfolio wealthfolio: add nightly backup sidecar — SQLite → NFS 2026-04-18 22:25:19 +00:00
webhook_handler [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
whisper [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
wireguard [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
woodpecker [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
xray [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ytdlp [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00