Commit graph

18 commits

Author SHA1 Message Date
Viktor Barzin
a04335d0f3 right-size 14 services and scale down GPU-heavy workloads [ci skip]
Memory right-sizing based on VPA upperBound analysis:
- Increases: stirling-pdf 1200→1536Mi, claude-memory 64→128Mi,
  dawarich 512→768Mi, kyverno-cleanup 128→192Mi, linkwarden 768→1Gi,
  navidrome 64→128Mi, listenarr 768→896Mi, privatebin 64→128Mi,
  ntfy 64→128Mi, health 128→256Mi, dbaas quota 16→20Gi,
  mysql-operator 384→512Mi
- Decreases: rybbit 768→384Mi, nvidia-exporter added explicit 192Mi,
  dcgm-exporter 2560→1536Mi
- Scale to 0: ebook2audiobook/audiblez-web, whisper (GPU node pressure)

Net effect: -496Mi cluster-wide, 13 ContainerNearOOM alerts resolved,
all ResourceQuota pressures cleared, GPU health green.
2026-03-15 23:00:49 +00:00
Viktor Barzin
1acf8cc4e8 migrate consuming stacks to ESO + remove k8s-dashboard static token
Phase 9: ExternalSecret migration across 26 stacks:

Fully migrated (vault data source removed, ESO delivers secrets):
- speedtest, shadowsocks, wealthfolio, plotting-book, f1-stream, tandoor
- n8n, dawarich, diun, netbox, onlyoffice, tuya-bridge
- hackmd (ESO template for DB URL), health (ESO template for DB URL)
- trading-bot (ESO template for DATABASE_URL + 7 secret env vars)
- forgejo (removed unused vault data source)

Partially migrated (vault kept for plan-time, ESO added for runtime):
- immich, linkwarden, nextcloud, paperless-ngx (jsondecode for homepage)
- claude-memory, rybbit, url, webhook_handler (plan-time in locals/jobs)
- woodpecker, openclaw, resume (plan-time in helm values/jobs/modules)

17 stacks unchanged (all plan-time: homepage annotations, configmaps,
module inputs) — vault data source works with OIDC auth.

Phase 17a: Remove k8s-dashboard static admin token secret.
Users now get tokens via: vault write kubernetes/creds/dashboard-admin
2026-03-15 19:05:04 +00:00
Viktor Barzin
c034adab5f mitigate cluster instability during terraform applies
- Recreate strategy for heavy single-replica deployments (onlyoffice, stirling-pdf)
- Reduce maxSurge on multi-replica deployments (traefik, authentik, grafana, kyverno)
  to prevent memory request surge overwhelming scheduler
- Weekly etcd defrag CronJob (Sunday 3 AM) to prevent fragmentation buildup
- Disable Kyverno policy reports (ephemeral report cleanup)
- Cloud-init: journald persistence + 4Gi swap for worker nodes
- Kubelet: LimitedSwap behavior for memory pressure relief
2026-03-15 17:23:39 +00:00
Viktor Barzin
56ddee457a fix: openclaw policy violation + reduce memory requests for capacity
- openclaw: fix Kyverno policy violation (node:22-alpine ->
  docker.io/library/node:22-alpine), reduce request to 1536Mi
  with 2Gi limit for overcommit
- rybbit/clickhouse: reduce 1Gi -> 768Mi (frees 256Mi)
- stirling-pdf: reduce 1536Mi -> 1200Mi (frees 336Mi)
2026-03-15 10:37:58 +00:00
Viktor Barzin
6f562b5da6 add vaultwarden daily backup CronJob to NFS
SQLite backup via Online Backup API + copy of RSA keys,
attachments, sends, and config. 30-day retention with rotation.
Pod affinity ensures co-scheduling with vaultwarden for RWO PVC access.
2026-03-15 00:03:59 +00:00
Viktor Barzin
f7c2c06009 right-size memory: set requests=limits based on actual usage
- Set memory requests = limits across 56 stacks to prevent overcommit
- Right-sized limits based on actual pod usage (2x actual, rounded up)
- Scaled down trading-bot (replicas=0) to free memory
- Fixed OOMKilled services: forgejo, dawarich, health, meshcentral,
  paperless-ngx, vault auto-unseal, rybbit, whisper, openclaw, clickhouse
- Added startup+liveness probes to calibre-web
- Bumped inotify limits on nodes 2,3 (max_user_instances 128->8192)

Post node2 OOM incident (2026-03-14). Previous kubelet config had no
kubeReserved/systemReserved set, allowing pods to starve the kernel.
2026-03-14 21:01:24 +00:00
Viktor Barzin
2102cb2d73 Right-size CPU requests cluster-wide and remove missed CPU limits
Increase requests for under-requested pods (dashy 50m→250m, frigate 500m→1500m,
clickhouse 100m→500m, otp 100m→300m, linkwarden 25m→50m, authentik worker 50m→100m).

Reduce requests for over-requested pods (crowdsec agent/lapi 500m→25m each,
prometheus 200m→100m, dbaas mysql 1800m→100m, pg-cluster 250m→50m,
shlink-web 250m→10m, gpu-pod-exporter 50m→10m, stirling-pdf 100m→25m,
technitium 100m→25m, celery 50m→15m). Reduce crowdsec quota from 8→1 CPU.

Remove missed CPU limits in prometheus (cpu: "2") and dbaas (cpu: "3600m") tpl files.
2026-03-14 09:22:24 +00:00
Viktor Barzin
b00f810d3d Remove all CPU limits cluster-wide to eliminate CFS throttling
CPU limits cause CFS throttling even when nodes have idle capacity.
Move to a request-only CPU model: keep CPU requests for scheduling
fairness but remove all CPU limits. Memory limits stay (incompressible).

Changes across 108 files:
- Kyverno LimitRange policy: remove cpu from default/max in all 6 tiers
- Kyverno ResourceQuota policy: remove limits.cpu from all 5 tiers
- Custom ResourceQuotas: remove limits.cpu from 8 namespace quotas
- Custom LimitRanges: remove cpu from default/max (nextcloud, onlyoffice)
- RBAC module: remove cpu_limits variable and quota reference
- Freedify factory: remove cpu_limit variable and limits reference
- 86 deployment files: remove cpu from all limits blocks
- 6 Helm values files: remove cpu under limits sections
2026-03-14 08:51:45 +00:00
Viktor Barzin
6bd3970579 [ci skip] add Homepage gethomepage.dev annotations to all services
Add Kubernetes ingress annotations for Homepage auto-discovery across
~88 services organized into 11 groups. Enable serviceAccount for RBAC,
configure group layouts, and add Grafana/Frigate/Speedtest widgets.
2026-03-07 20:39:54 +00:00
Viktor Barzin
1f2c1ca361 [ci skip] phase 5+6: update CI pipelines for SOPS, add sensitive=true to secret vars
Phase 5 — CI pipelines:
- default.yml: add SOPS decrypt in prepare step, change git add . to
  specific paths (stacks/ state/ .woodpecker/), cleanup on success+failure
- renew-tls.yml: change git add . to git add secrets/ state/

Phase 6 — sensitive=true:
- Add sensitive = true to 256 variable declarations across 149 stack files
- Prevents secret values from appearing in terraform plan output
- Does NOT modify shared modules (ingress_factory, nfs_volume) to avoid
  breaking module interface contracts

Note: CI pipeline SOPS decryption requires sops_age_key Woodpecker secret
to be created before the pipeline will work with SOPS. Until then, the old
terraform.tfvars path continues to function.
2026-03-07 14:30:36 +00:00
Viktor Barzin
79a2aa3784 [ci skip] migrate 29 services from inline NFS to CSI-backed PV/PVC
Batch migration of all single-volume and simple multi-volume stacks.
All services verified healthy after migration. Uses nfs-truenas
StorageClass with soft,timeo=30,retrans=3 mount options to eliminate
stale NFS mount hangs.

Services: atuin, audiobookshelf, calibre, changedetection, diun,
excalidraw, forgejo, freshrss, grampsweb, hackmd, health,
isponsorblocktv, matrix, meshcentral, n8n, navidrome, ntfy, ollama,
onlyoffice, owntracks, paperless-ngx, poison-fountain, send,
stirling-pdf, tandoor, wealthfolio, whisper, woodpecker, ytdlp
2026-03-02 00:15:39 +00:00
Viktor Barzin
9e4fb23b10 [ci skip] right-size all pod resources based on VPA + live metrics audit
Full cluster resource audit: cross-referenced Goldilocks VPA recommendations,
live kubectl top metrics, and Terraform definitions for 100+ containers.

Critical fixes:
- dashy: CPU throttled at 98% (490m/500m) → 2 CPU limit
- stirling-pdf: CPU throttled at 99.7% (299m/300m) → 2 CPU limit
- traefik auth-proxy/bot-block-proxy: mem limit 32Mi → 128Mi

Added explicit resources to ~40 containers that had none:
- audiobookshelf, changedetection, cyberchef, dawarich, diun, echo,
  excalidraw, freshrss, hackmd, isponsorblocktv, linkwarden, n8n,
  navidrome, ntfy, owntracks, privatebin, send, shadowsocks, tandoor,
  tor-proxy, wealthfolio, networking-toolbox, rybbit, mailserver,
  cloudflared, pgadmin, phpmyadmin, crowdsec-web, xray, wireguard,
  k8s-portal, tuya-bridge, ollama-ui, whisper, piper, immich-server,
  immich-postgresql, osrm-foot

GPU containers: added CPU/mem alongside GPU limits:
- ollama: removed CPU/mem limits (models vary in size), keep GPU only
- frigate: req 500m/2Gi, lim 4/8Gi + GPU
- immich-ml: req 100m/1Gi, lim 2/4Gi + GPU

Right-sized ~25 over-provisioned containers:
- kms-web-page: 500m/512Mi → 50m/64Mi (was using 0m/10Mi)
- onlyoffice: CPU 8 → 2 (VPA upper 45m)
- realestate-crawler-api: CPU 2000m → 250m
- blog/travel-blog/webhook-handler: 500m → 100m
- coturn/health/plotting-book: reduced to match actual usage

Conservative methodology: limits = max(VPA upper * 2, live usage * 2)
2026-03-01 19:18:50 +00:00
Viktor Barzin
a1ba218cd2 [ci skip] Phase 1: PostgreSQL migrated to CNPG on local disk
Major milestone - shared PostgreSQL moved from NFS to CloudNativePG:
- CNPG cluster (pg-cluster) running in dbaas namespace on local-path storage
- PostGIS image (ghcr.io/cloudnative-pg/postgis:16) for dawarich compatibility
- All 20 databases and 19 roles restored from pg_dumpall backup
- postgresql.dbaas Service patched to point at CNPG primary
- Old PG deployment scaled to 0 (NFS data intact for rollback)
- All 12+ dependent services verified running:
  authentik, n8n, dawarich, tandoor, linkwarden, netbox, woodpecker,
  rybbit, affine, health, resume, trading-bot, atuin
- Authentik PgBouncer working through the switched endpoint

TODO: codify CNPG cluster in Terraform, add 2nd replica, update backup CronJob
2026-02-28 19:08:06 +00:00
Viktor Barzin
5a62d7b9a5 [ci skip] add resource limits to paperless-ngx and stirling-pdf to prevent OOMKills
Both services were hitting the 256Mi Kyverno LimitRange default and getting
OOMKilled. Set explicit limits to 1Gi memory for both.
2026-02-28 19:07:59 +00:00
Viktor Barzin
89a6e08245 [ci skip] Infrastructure hardening: security, monitoring, reliability, maintainability
Phase 1 - Critical Security:
- Netbox: move hardcoded DB/superuser passwords to variables
- MeshCentral: disable public registration, add Authentik auth
- Traefik: disable insecure API dashboard (api.insecure=false)
- Traefik: configure forwarded headers with Cloudflare trusted IPs

Phase 2 - Security Hardening:
- Add security headers middleware (HSTS, X-Frame-Options, nosniff, etc.)
- Add Kyverno pod security policies in audit mode (privileged, host
  namespaces, SYS_ADMIN, trusted registries)
- Tighten rate limiting (avg=10, burst=50)
- Add Authentik protection to grampsweb

Phase 3 - Monitoring & Alerting:
- Add critical service alerts (PostgreSQL, MySQL, Redis, Headscale,
  Authentik, Loki)
- Increase Loki retention from 7 to 30 days (720h)
- Add predictive PV filling alert (predict_linear)
- Re-enable Hackmd and Privatebin down alerts

Phase 4 - Reliability:
- Add resource requests/limits to Redis, DBaaS, Technitium, Headscale,
  Vaultwarden, Uptime Kuma
- Increase Alloy DaemonSet memory to 512Mi/1Gi

Phase 6 - Maintainability:
- Extract duplicated tiers locals to terragrunt.hcl generate block
  (removed from 67 stacks)
- Replace hardcoded NFS IP 10.0.10.15 with var.nfs_server (114
  instances across 63 files)
- Replace hardcoded Redis/PostgreSQL/MySQL/Ollama/mail host references
  with variables across ~35 stacks
- Migrate xray raw ingress resources to ingress_factory modules
2026-02-23 22:05:28 +00:00
Viktor Barzin
c7c7047f1c [ci skip] Flatten module wrappers into stack roots
Remove the module "xxx" { source = "./module" } indirection layer
from all 66 service stacks. Resources are now defined directly in
each stack's main.tf instead of through a wrapper module.

- Merge module/main.tf contents into stack main.tf
- Apply variable replacements (var.tier -> local.tiers.X, renamed vars)
- Fix shared module paths (one fewer ../ at each level)
- Move extra files/dirs (factory/, chart_values, subdirs) to stack root
- Update state files to strip module.<name>. prefix
- Update CLAUDE.md to reflect flat structure

Verified: terragrunt plan shows 0 add, 0 destroy across all stacks.
2026-02-22 15:13:55 +00:00
Viktor Barzin
e6420c7b36 [ci skip] Move Terraform modules into stack directories
Move all 88 service modules (66 individual + 22 platform) from
modules/kubernetes/<service>/ into their corresponding stack directories:

- Service stacks: stacks/<service>/module/
- Platform stack: stacks/platform/modules/<service>/

This collocates module source code with its Terragrunt definition.
Only shared utility modules remain in modules/kubernetes/:
ingress_factory, setup_tls_secret, dockerhub_secret, oauth-proxy.

All cross-references to shared modules updated to use correct
relative paths. Verified with terragrunt run --all -- plan:
0 adds, 0 destroys across all 68 stacks.
2026-02-22 14:38:14 +00:00
Viktor Barzin
a9ba8899be [ci skip] Phase 3: Create 66 service stacks and migrate state
Generated individual stack directories for all 66 services under stacks/.
Each stack has terragrunt.hcl (depends on platform) and main.tf (thin
wrapper calling existing module). Migrated all 64 active service states
from root terraform.tfstate to individual state files. Root state is now
empty. Verified with terragrunt plan on multiple stacks (no changes).
2026-02-22 13:56:34 +00:00