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3b5bf20902cd9bff696933d13ed98df4323d14cd
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32 Commits

Author SHA1 Message Date
Mayne0213
3b5bf20902 PERF(observability): optimize resources via VPA 
- alertmanager: CPU 15m/15m, memory 100Mi/100Mi
- blackbox-exporter: CPU 15m/32m, memory 100Mi/100Mi
- goldilocks: controller 15m/25m, dashboard 15m/15m
- grafana: CPU 22m/24m, memory 144Mi/242Mi (upperBound)
- kube-state-metrics: CPU 15m/15m, memory 100Mi/100Mi
- loki: CPU 10m/69m, memory 225Mi/323Mi
- node-exporter: CPU 15m/15m, memory 100Mi/100Mi
- opentelemetry: CPU 34m/410m, memory 142Mi/1024Mi
- prometheus-operator: CPU 15m/15m, memory 100Mi/100Mi
- tempo: CPU 15m/15m, memory 100Mi/109Mi
- thanos: CPU 15m/15m, memory 100Mi/126Mi
- vpa: CPU 15m/15m, memory 100Mi/100Mi
 2026-01-12 01:07:58 +09:00
Mayne0213
c3084225b7 PERF(observability): add HA for Loki and Tempo 
- Loki: replicas 1→2 with soft anti-affinity
- Tempo: replicas 1→2 with soft anti-affinity
- Thanos/Prometheus: keep replica 1

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-01-10 13:46:02 +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
c34f56945a feat(prometheus): enable container CPU throttling metrics collection 
- Override default cAdvisorMetricRelabelings
- Remove cfs_throttled_seconds_total from drop regex
- Enables CPU Throttled panels in Grafana dashboards

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-01-10 03:55:36 +09:00
Mayne0213
9e87e6fbcb REVERT(otel): remove metrics collection, keep logs/traces only 
- Revert to simpler architecture where Prometheus scrapes metrics directly via ServiceMonitors
- OTel Collector only handles logs (filelog) and traces (otlp)
- Remove Target Allocator and metrics-related config
- This reduces complexity and resource usage for home cluster
 2026-01-10 01:18:35 +09:00
Mayne0213
a506ca3f58 FIX(prometheus): reduce replicas to 1 due to resource constraints 
- Cluster has insufficient memory to schedule 2 Prometheus replicas
- Thanos sidecar still provides HA query capability
 2026-01-10 01:18:26 +09:00
Mayne0213
5bc0caa324 FIX(prometheus): increase memory limit to 1536Mi to resolve OOMKilled 
- Prometheus pods were crashing with OOMKilled due to insufficient memory (768Mi)
- Increased memory requests and limits from 768Mi to 1536Mi
 2026-01-10 01:18:11 +09:00
Mayne0213
12ee5b61c0 FIX(prometheus): enable out-of-order time window 
- Set outOfOrderTimeWindow to 5m for TSDB
- Allow slightly out-of-order samples from distributed collectors
- Prevents data loss from timing differences
 2026-01-09 23:43:01 +09:00
Mayne0213
a3c5a8dbcf CHORE(prometheus): disable direct scraping 
- Disable ServiceMonitor/PodMonitor scraping in Prometheus
- OTel Collector now handles all metrics collection
- Prevents out-of-order sample errors from duplicate scraping
 2026-01-09 23:39:30 +09:00
Mayne0213
02faf93555 FEAT(otel): add OTel Collector for logs and traces 
- Add OpenTelemetry Operator for CR management
- Deploy OTel Collector as DaemonSet via CR
- Enable filelog receiver for container log collection
- Replace Promtail with OTel filelog receiver
- Keep Prometheus for ServiceMonitor-based metrics scraping
 2026-01-09 23:23:51 +09:00
Mayne0213
470a08f78a CHORE(repo): switch to emptyDir with sizeLimit 
- Add sizeLimit 2Gi to loki emptyDir
- Add sizeLimit 2Gi to tempo emptyDir
- Change prometheus from PVC to emptyDir 5Gi
- Change alertmanager from PVC to emptyDir 500Mi
 2026-01-09 21:42:35 +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
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
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
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
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
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
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
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
864c2c45d8 REFACTOR(alertmanager): change storageClass 
- Update storageClass to local-path-retain
- Change storage backend configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
e4b477a510 REFACTOR(longhorn): migrate to local-path 
- alertmanager, grafana, loki, prometheus: storageClass -> local-path-retain
- Change storage backend configuration
 2026-01-05 00:40:01 +09:00
Mayne0213
60dfa5cf7b CHORE(resources): disable apiserver/etcd metrics 
- Disable kubeApiServer ServiceMonitor (~37k series)
- Disable kubeEtcd ServiceMonitor (~26k series)
- Expected memory reduction: ~30-40%
 2026-01-05 00:40:01 +09:00
Mayne0213
d8360c10a1 FEAT(repo): add cAdvisor metrics_path relabel 
- Add relabeling for cAdvisor metrics
- Support recording rules
 2026-01-05 00:40:01 +09:00
Mayne0213
1befeb68c4 FEAT(prometheus): add ServerSideApply 
- Enable ServerSideApply for CRD annotation handling
- Fix resource management
 2026-01-05 00:40:01 +09:00
Mayne0213
cd575d94a6 PERF(prometheus): optimize prometheus memory usage 
- Increase scrapeInterval: 30s → 60s
- Increase evaluationInterval: 30s → 60s
- Reduce retention: 7d → 3d
- Add memory limit: 1Gi (prevent unlimited growth)
- Increase memory request: 256Mi → 512Mi (reflect actual usage)
 2026-01-05 00:40:01 +09:00
Mayne0213
2ec87ca7a5 PERF(prometheus): increase Prometheus CPU request from 50m to 200m 
- Increase CPU request based on actual usage
- Optimize resource allocation
 2026-01-05 00:40:01 +09:00
Mayne0213
b3ad6338ac FIX(prometheus): grafana prometheus datasource 
- url with full namespace
 2026-01-04 23:38:05 +09:00
Mayne0213
340c6fea11 FIX(alertmanager): prometheus alertingendpoints 
- to connect to alertma...
 2026-01-04 23:38:05 +09:00
Mayne0213
79b34aaca6 FEAT(prometheus): add ServerSideApply 
- Enable ServerSideApply for CRD annotation handling
- Fix resource management
 2026-01-04 23:38:05 +09:00
Mayne0213
ac2abde8b5 FIX(prometheus): servicemonitor namespace 
- from monitoring to prometheus
 2026-01-04 23:38:05 +09:00
Mayne0213
5c4676ca9a REFACTOR(repo): restructure monitoring folder 
- and add namespace resou...
- Remove argocd/, helm-values/, ingress/ subdirectories
- Move files to parent directory (argocd.yaml, helm-values.yaml,
  ingress.yaml)
- Update helm valueFiles paths in ArgoCD Applications
- Add namespace.yaml to all applications with Goldilocks labels
- Update destination namespaces to match folder names
- Update kustomization.yaml files to reference new structure
 2026-01-04 23:38:05 +09:00