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4bdcaf8fcd4967e25bf1beb4d74c43277ac4927b
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9 Commits

Author SHA1 Message Date
Mayne0213
15d5e58d6c migrate: change repoURLs from GitHub to Gitea 
Update all ArgoCD Application references to use Gitea (github0213.com)
instead of GitHub for K3S-HOME/observability repository.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-01-10 20:43:29 +09:00
Mayne0213
a3003d597f PERF(observability): adjust resources based on VPA 
- Update blackbox-exporter cpu 15m→23m, memory 64Mi→100Mi
- Update grafana cpu 11m→23m, memory 425Mi→175Mi
- Update loki cpu 23m→63m, memory 462Mi→363Mi
- Update tempo cpu 50m→15m, memory 128Mi→100Mi
- Update thanos memory 128Mi→283Mi
- Update node-exporter memory 64Mi→100Mi
- Update kube-state-metrics memory 100Mi→105Mi
- Update opentelemetry-operator cpu 10m→11m, memory 256Mi→75Mi
- Update vpa memory 128Mi→100Mi
 2026-01-10 14:33:40 +09:00
Mayne0213
9e218a8adc PERF(observability): reduce replicas, add priority 
- Reduce Prometheus replicas from 2 to 1
- Reduce Grafana replicas from 2 to 1
- Reduce Blackbox-exporter replicas from 2 to 1
- Move Loki, Thanos, Tempo to workers (remove tolerations)
- Add medium-priority to Prometheus, Loki, Thanos, Tempo
 2026-01-10 13:15:03 +09:00
Mayne0213
94af545120 REFACTOR(thanos): remove S3 storage integration 
- Disable Store Gateway and Compactor
- Remove Sidecar objectStorageConfig
- Keep Thanos Query + Sidecar for HA query
- 3-day local retention is sufficient
 2026-01-09 21:42:35 +09:00
Mayne0213
14bd244b98 FIX(thanos): increase compactor memory to 256Mi 
- Compactor was OOMKilled with 128Mi limit
- Set to 256Mi for stability during compaction
 2026-01-09 21:42:35 +09:00
Mayne0213
5089e8607d CHORE(resources): set memory limits equal to memory requests 
Align memory limits with memory requests for guaranteed QoS class.
- prometheus, thanos (query, storegateway, compactor)
- alertmanager, tempo, goldilocks (dashboard, controller)
- node-exporter, opentelemetry-collector, vpa, kube-state-metrics
 2026-01-09 21:42:35 +09:00
Mayne0213
aecb15031d FEAT(grafana): add Thanos as default datasource 
- Add Thanos Query as default Prometheus datasource
- Keep original Prometheus datasource as backup
- Thanos provides deduplicated metrics from HA Prometheus

REFACTOR(thanos): move all components to master node

- Add tolerations for control-plane:NoSchedule
- Add nodeSelector for control-plane node
- Affects: query, storegateway, compactor
- PVC will be recreated on master node (data in S3)

FIX(thanos): allow non-Bitnami images (quay.io/thanos)

FIX(thanos): correct nodeSelector value to 'true'
 2026-01-09 21:41:52 +09:00
Mayne0213
9b052b49cf FEAT(thanos): add Thanos for Prometheus HA 
- Add Thanos Query, Store Gateway, Compactor
- Enable Prometheus Sidecar with S3 (MinIO) storage
- Configure OCI registry for Bitnami chart
- Fix Vault secret path and image settings
- Add nodeSelector for master node
 2026-01-09 21:41:52 +09:00
Mayne0213
6b576d6a16 FEAT(thanos): add Thanos for Prometheus HA and long-term storage 
- Add Thanos Query, Store Gateway, Compactor
- Enable Prometheus Sidecar with S3 (MinIO) storage
- Configure Prometheus replicas: 2 with pod anti-affinity
- Add ExternalSecrets for MinIO credentials
- Retention: raw 7d, 5m downsampled 30d, 1h downsampled 90d
 2026-01-09 21:41:52 +09:00