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Author SHA1 Message Date
Mayne0213
7cd778313a FIX(prometheus): disable PrometheusDuplicateTimestamps alert 
- Low severity alert that fires repeatedly in HA setup
- 0.05 samples/s drop rate is negligible
 2026-01-09 21:42:35 +09:00
Mayne0213
bb8b1c193e FIX(alertmanager): improve OOMKilled alert detection 
- Only fire when container restarted in last 10 minutes
- Prevent stale alerts from old OOM events
 2026-01-09 21:42:35 +09:00
Mayne0213
e3c615b5c1 FEAT(alertmanager): add OOMKilled alert rule 
- Add PrometheusRule to alert when containers are OOMKilled
- Severity: warning, fires immediately
 2026-01-09 21:42:35 +09:00
Mayne0213
539f4be497 FIX(grafana): use kube-state-metrics for OOM detection 
- Replace container_oom_events_total with kube_pod_container_status_last_terminated_reason
- Fix OOM events not showing after pod restart
- cAdvisor metric resets on pod restart, kube-state-metrics persists
 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
4a4a43ed82 FIX(prometheus): increase memory to 768Mi 
- Prometheus was OOMKilled with 512Mi limit
- Set both requests and limits to 768Mi
 2026-01-09 21:42:35 +09:00
Mayne0213
8c2a9badf8 FIX(alertmanager): set karma memory limits equal to requests 
- Align memory limits with requests for guaranteed QoS
 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
fd6c1952ad FIX(tempo): enable env var expansion in config 
- Add extraArgs config.expand-env=true
- Required for ${VAR} substitution in tempo.yaml
 2026-01-09 21:41:52 +09:00
Mayne0213
5f926cb6cf FEAT(tempo): configure S3 storage with MinIO 
- Enable env var expansion in config
- Configure extraEnv for S3 credentials
- Fix OTel Collector image settings
 2026-01-09 21:41:52 +09:00
Mayne0213
7139f3e5a2 FIX(prometheus): correct ArgoCD metrics service names 
- Update controller target to argocd-application-controller-metrics
- Update repo-server target to argocd-repo-server-metrics
 2026-01-09 21:41:52 +09:00
Mayne0213
034a5f32a2 CHORE(repo): remove application.yaml reference 
- Remove from kustomization.yaml
 2026-01-09 21:41:52 +09:00
Mayne0213
87420d842d CHORE(repo): remove self-referencing application.yaml 
- Delete application.yaml (managed by platform)
 2026-01-09 21:41:52 +09:00
Mayne0213
445cabb900 FIX(prometheus): add ExternalSecret default values to fix OutOfSync 2026-01-09 21:41:52 +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
ea4d7d4ecf PERF(prometheus): reduce CPU request from 200m to 50m 
- Actual usage is ~17m, 200m was over-provisioned
- Fixes "Insufficient cpu" scheduling error for replica 2
 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
Mayne0213
9f3b768cd9 FIX(loki): fix lokiCanary config path 
- Move lokiCanary to top-level config
- Fix toleration not being applied to DaemonSet
 2026-01-09 21:41:52 +09:00
Mayne0213
a1c347e4ff FEAT(loki): enable loki-canary with control-plane toleration 
- Enable lokiCanary for log ingestion monitoring
- Add toleration for control-plane node
 2026-01-09 21:41:52 +09:00
Mayne0213
30f028fae4 CHORE(prometheus): disable CPU/Memory overcommit alerts 
- Disable KubeCPUOvercommit and KubeMemoryOvercommit alerts
- Cluster uses replica=2 with pod anti-affinity for HA
 2026-01-09 21:41:52 +09:00
Mayne0213
6da4eba1dc CHORE(grafana): remove admin login secret for SSO 
- Remove grafana-admin-password ExternalSecret
- Remove admin section from helm-values.yaml
- Authentication handled by Authelia SSO middleware
 2026-01-09 21:41:52 +09:00
Mayne0213
735166fc9c REFACTOR(repo): standardize taint to control-plane 
- Change node-role.kubernetes.io/master to control-plane
- Update vpa, goldilocks, kube-state-metrics tolerations
- Remove deprecated master taint from promtail
 2026-01-09 21:41:52 +09:00
Mayne0213
7ed4d69c51 PERF(alertmanager): add HA with 2 replicas 
- Increase replicaCount from 1 to 2
- Add soft pod anti-affinity to spread across nodes
- Improve availability during node failures
 2026-01-09 21:41:52 +09:00
Mayne0213
4511fd5b2e FIX(repo): correct nodeSelector label value 
- Change master label value from "" to "true"
- Fix pod scheduling failure due to label mismatch
 2026-01-09 21:41:52 +09:00
Mayne0213
1c6a9dc491 PERF(repo): move system pods to master node 
- Add nodeSelector for master node placement
- Add tolerations for NoExecute taint
- kube-state-metrics: schedule on master
- goldilocks-controller: schedule on master, reduce to 1 replica
- vpa-recommender: schedule on master, remove anti-affinity
- Free worker node resources for applications
 2026-01-09 21:41:52 +09:00
Mayne0213
bbdd908b27 CHORE(uptime-kuma): remove uptime-kuma application 
- Delete uptime-kuma folder and configuration
- Using Grafana + Prometheus for monitoring instead
 2026-01-09 21:41:52 +09:00
Mayne0213
6a8e1f5a47 PERF(vpa): fix config and reduce CPU request 
- Merge duplicate recommender sections
- Reduce CPU: 50m → 15m
- Change replicas: 2 → 1 (single recommender sufficient)
 2026-01-09 21:41:52 +09:00
Mayne0213
2cf35d0f76 FEAT(loki): configure storage and HA 
- Rename extraVolume to avoid duplicate name
- Add emptyDir for /var/loki cache
- Migrate to shared storage with MinIO
- Configure HA with 2 replicas
- Revert to single replica for Single Binary mode
 2026-01-09 21:41:52 +09:00
Mayne0213
2b7ee1fe51 FEAT(loki): configure storage and HA 
- Rename extraVolume to avoid duplicate name
- Add emptyDir for /var/loki cache
- Migrate to shared storage with MinIO
- Configure HA with 2 replicas
- Revert to single replica for Single Binary mode
 2026-01-09 21:41:52 +09:00
Mayne0213
1b7a4294dc FIX(goldilocks): merge duplicate dashboard sections 
- Merge dashboard.affinity into dashboard section
- Fix YAML structure to prevent OutOfSync status
 2026-01-09 21:41:52 +09:00
Mayne0213
4515ea0b33 FEAT(observability): enable HA with replica 2 and soft anti-affinity 
- Add replicaCount: 2 to goldilocks, vpa, alertmanager
- Add replicas: 2 to loki singleBinary
- Add soft pod anti-affinity for node distribution
- Keep kube-state-metrics at replica 1 to prevent duplicate metrics

FIX(loki): revert to replica 1 for Single Binary mode

- Single Binary mode cannot run more than 1 replica without object storage
- Remove affinity configuration for single replica
- Keep filesystem storage backend
 2026-01-09 21:41:51 +09:00
Mayne0213
855321bebf FIX(prometheus): ignore relabelings default value diff in ServiceMonitor 2026-01-08 00:15:09 +09:00
Mayne0213
4286296591 PERF(resources): remove CPU limits - keep memory limits only 
- CPU throttling prevents app startup, not crashes
- Memory OOM is the real cascading failure cause
- CPU request ensures fair scheduling
 2026-01-07 23:48:35 +09:00
Mayne0213
69dc3b34be REFACTOR(secrets): flatten Vault paths 
- Change secret paths from <category>/<app> to <app>
- monitoring/alertmanager → alertmanager
- monitoring/grafana → grafana
- databases/postgresql → postgresql
 2026-01-06 16:52:58 +09:00
Mayne0213
7888aeff36 REFACTOR(repo): move vault/ to manifests/ 
- Move ExternalSecret files from vault/ to manifests/secret.yaml
- Update kustomization.yaml references
- Remove vault/ folders

Apps: alertmanager, grafana, prometheus
 2026-01-06 16:42:33 +09:00
Mayne0213
7b9abaf9c8 REFACTOR(obs): integrate ingress to helm-values 
- alertmanager: move ingress to karma inline, servicemonitor to manifests
- goldilocks: move ingress to helm-values
- grafana: move ingress to helm-values
- uptime-kuma: move ingress to helm-values
 2026-01-06 01:57:03 +09:00
Mayne0213
28ba50d1a3 REFACTOR(repo): observability repo structure 
- Add application.yaml for ArgoCD app-of-apps
- Add kustomization.yaml with observability components
- Add renovate.json for automated updates
- Update all component argocd.yaml repoURLs to observability repo

Components: prometheus, alertmanager, grafana, loki, promtail,
node-exporter, kube-state-metrics, goldilocks, uptime-kuma, vpa
 2026-01-05 00:40:01 +09:00
Mayne0213
8dcb563ae4 REFACTOR(grafana): change Grafana storageClass 
- Update storageClass to local-path
- Change storage backend configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
c472035499 FEAT(grafana): add Grafana monitoring 
- Add Grafana monitoring configuration
- Enable metrics collection
 2026-01-05 00:40:01 +09:00
Mayne0213
18bb20075e REFACTOR(grafana): remove trivy ui 
- use grafana dashboard instead
- Delete trivy-ui ArgoCD Application
- Delete trivy ingress.yaml
- Update kustomization.yaml
 2026-01-05 00:40:01 +09:00
Mayne0213
864c2c45d8 REFACTOR(alertmanager): change storageClass 
- Update storageClass to local-path-retain
- Change storage backend configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
7653f2c4c8 FIX(grafana): fix storageClass key name 
- Correct storageclass key spelling
- Fix Helm values configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
aad4c249e2 CHORE(grafana): disable auto dashboard provision 
- Use manual import instead of automatic provisioning
- Remove configMapGenerator for dashboards
- Remove sidecar and dashboards helm config
- Keep JSON files in dashboards/ for manual import reference
 2026-01-05 00:40:01 +09:00
Mayne0213
ababd677d4 FEAT(repo): enable ServerSideApply 
- Enable ServerSideApply to handle large configmaps
- Fix resource management issues
 2026-01-05 00:40:01 +09:00
Mayne0213
9583be9b46 FEAT(grafana): export dashboards 
- to JSON and use sidecar ConfigMaps
- Export 14 dashboards to JSON files
- Use kustomize configMapGenerator for dashboard ConfigMaps
- Enable Grafana sidecar to load dashboards from ConfigMaps
- Keep Longhorn and Traefik Official from grafana.com
 2026-01-05 00:40:01 +09:00
Mayne0213
b7ac39d68c FEAT(prometheus): enable Loki ServiceMonitor 
- Enable Loki ServiceMonitor for Prometheus metrics collection
- Add monitoring configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
c356493707 FEAT(alertmanager): add datasource to Grafana 
- Add Alertmanager datasource configuration
- Enable alert visualization
 2026-01-05 00:40:01 +09:00
Mayne0213
997893284b FEAT(alertmanager): add ServiceMonitor 
- Create servicemonitor.yaml for Prometheus to scrape Alertmanager
- alertmanager chart does not include ServiceMonitor, must be added separately
- Enables Grafana Alertmanager dashboard to display data
 2026-01-05 00:40:01 +09:00
Mayne0213
699b31cc67 FEAT(repo): add uptime kuma for service monitoring 
- Add Uptime Kuma Helm chart deployment (dirsigler/uptime-kuma v2.24.0)
- Configure ingress for kuma0213.kro.kr
- Enable ServiceMonitor for Prometheus integration
- Use local-path storage class with 1Gi
 2026-01-05 00:40:01 +09:00