- Switch from redis/redis-stack:latest to redis:7-alpine
(modules were completely unused — zero module commands in stats)
- Move data from NFS (/mnt/main/redis) to local-path PVC
(RDB saves: 39s on NFS → <1s on local disk)
- Start fresh (old RDB had redis-stack module data incompatible with plain redis;
all Redis data is transient — queues and caches rebuild automatically)
- Add hourly redis-backup CronJob: redis-cli --rdb to NFS for backup pipeline
- Remove RedisInsight UI ingress (port 8001, only in redis-stack)
- Add redis-backup to NFS exports
- 110 clients reconnected immediately after switchover
- Memory savings: ~100MB from dropping unused modules
- cache_from/cache_to must be plain strings, not YAML lists — the
plugin-docker-buildx treats them as single string values and the
Woodpecker settings layer was splitting comma-separated list items
into separate --cache-from flags (type=registry and ref=... separately)
- caretta.tf: replace deprecated set{} blocks with values=[yamlencode()]
to fix Terraform plan error with newer Helm provider
Secondary instance on a separate node replicates all zones from primary via
zone transfer. LoadBalancer routes DNS queries to both pods. PDB ensures at
least 1 DNS pod survives voluntary disruptions. Setup job automates zone
transfer enablement and secondary zone creation via Technitium REST API.
- Reduce Kyverno LimitRange default limits ~4x across all tiers to fix
800-900% memory overcommitment on worker nodes
- Add cluster health check #25: per-node resource overcommitment
showing requests and limits vs allocatable capacity
- Add Kyverno policy for Goldilocks VPA mode by tier: tier-0 namespaces
get VPA Off mode (recommend only, no evictions) to prevent downtime
on critical infra (traefik, cloudflared, authentik, technitium, etc.)
- Non-tier-0 namespaces get VPA Auto mode for active right-sizing
Add Vertical Pod Autoscaler (recommender, updater, admission-controller)
and Goldilocks dashboard to monitor resource recommendations across all
namespaces. Dashboard at goldilocks.viktorbarzin.me behind Authentik.
- Scale admission controller to 2 replicas with topology spread across nodes
- Rewrite inject-priority-class-from-tier: use namespaceSelector instead of
API call per pod admission (eliminates Kyverno→API server round-trip)
- Rewrite sync-tier-label-from-namespace: same namespaceSelector approach
- Extract governance_tiers local to DRY up tier definitions
Admission controller was restarting every ~5min due to API server timeouts
causing leader election loss. failurePolicy:Fail meant the webhook blocked
all pod creation cluster-wide when Kyverno was unavailable.
- Add missing nvidia.com/gpu toleration to ollama and yt-highlights deployments
- Add node_selector gpu=true to ollama deployment
- Pass nfs_server variable through to actualbudget factory modules
- Fix AuthentikDown alert to match actual deployment name (goauthentik-server)
Add "Per-Path Latency Breakdown" table with p50/p95/p99 and request rate
per endpoint. Fix bar gauge position to sit next to timeseries. Add sort
transformation to "Top Offenders (Avg Duration)" panel.
Move API Performance and Per-Endpoint Latency to the top.
Move Scraping Overview, Scraping Activity, and Throttling & Errors
to the bottom. Keeps the most operationally relevant panels visible
first.
Mount DKIM private key at Rspamd-expected path
(/tmp/docker-mailserver/rspamd/dkim/viktorbarzin.me/mail.private)
and add dkim_signing.conf override for domain/selector config.
Rspamd does not auto-detect keys from the OpenDKIM path.
Add connection and message rate limits to protect against brute-force
attacks on SMTP/IMAP ports. 10 connections and 30 messages per minute
per client IP.
Pin Roundcubemail to stable 1.6-apache tag instead of :latest to
prevent unexpected breakage. Disable SMTP debug and reduce debug
level from 6 to 1 for production use.
Change cluster-healthcheck CronJob from every 30min to every 8h.
Replace fragile sed-based audit config in apiserver manifest with
idempotent Python script that deduplicates by name/mountPath,
preventing the duplicate volume entries that crashed the API server.
- Add gpu=true label to Terraform (nvidia null_resource alongside taint)
- Improve API server OIDC config to detect value changes, not just flag presence
- Add policy_hash trigger to audit-policy so rule changes auto-reapply
- Enable prometheus-node-exporter sub-chart, delete unused Ansible playbook
- Document full node rebuild procedure in CLAUDE.md
- Save Talos Linux migration evaluation for future reference
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.
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.
