feat: integrate observability into main eoapi chart

Author: pantierra

CHANGELOG.md

@@ -44,7 +44,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- Excluded renovate.json from CHANGELOG.md edits [#301](https://github.com/developmentseed/eoapi-k8s/pull/301)
+- Refactores eoapi-support into core eoapi chart [#262](https://github.com/developmentseed/eoapi-k8s/pull/262)
+
 
 ## [0.7.8] - 2025-09-10
 

charts/eoapi-support/.gitignore

@@ -61,3 +61,27 @@ dependencies:
     version: 1.17.8
     repository: https://knative.github.io/operator
     condition: knative.enabled
+
+  # Optional monitoring components for metrics collection and autoscaling
+  # These are disabled by default to keep deployments lightweight
+  # Enable via: monitoring.prometheus.enabled=true, monitoring.metricsServer.enabled=true
+  - name: metrics-server
+    version: 7.4.12
+    repository: https://charts.bitnami.com/bitnami
+    condition: monitoring.metricsServer.enabled
+
+  - name: prometheus
+    version: 27.42.0
+    repository: https://prometheus-community.github.io/helm-charts
+    condition: monitoring.prometheus.enabled
+
+  - name: prometheus-adapter
+    version: 5.2.0
+    repository: https://prometheus-community.github.io/helm-charts
+    condition: monitoring.prometheusAdapter.enabled
+
+  # Observability components - Grafana dashboards and visualization
+  - name: grafana
+    version: 10.1.2
+    repository: https://grafana.github.io/helm-charts
+    condition: observability.grafana.enabled

charts/eoapi-support/.helmignore

@@ -14,6 +14,8 @@ A Helm chart for deploying Earth Observation APIs with integrated STAC, raster,
 - Flexible database configuration
 - Real-time PostgreSQL notifications for STAC item changes
 - Unified ingress system
+- Autoscaling
+- Integrated observability (Prometheus & Grafana)
 
 ## TL;DR
 

charts/eoapi-support/Chart.yaml

@@ -0,0 +1,80 @@
+{{/*
+Common monitoring configurations to avoid duplication across values files
+*/}}
+
+{{/*
+Basic monitoring stack configuration
+*/}}
+{{- define "eoapi.monitoring.basic" -}}
+metricsServer:
+  enabled: true
+  apiService:
+    create: true
+prometheus:
+  enabled: true
+  alertmanager:
+    enabled: false
+  prometheus-pushgateway:
+    enabled: false
+  kube-state-metrics:
+    enabled: true
+  prometheus-node-exporter:
+    enabled: true
+    resources: {{- include "eoapi.resources.small" . | nindent 6 }}
+  server:
+    service:
+      type: ClusterIP
+{{- end -}}
+
+{{/*
+Production monitoring with persistence
+*/}}
+{{- define "eoapi.monitoring.production" -}}
+metricsServer:
+  enabled: true
+  apiService:
+    create: true
+prometheus:
+  enabled: true
+  alertmanager:
+    enabled: true
+  prometheus-pushgateway:
+    enabled: false
+  kube-state-metrics:
+    enabled: true
+  prometheus-node-exporter:
+    enabled: true
+    resources: {{- include "eoapi.resources.small" . | nindent 6 }}
+  server:
+    service:
+      type: ClusterIP
+    persistentVolume:
+      enabled: true
+      size: 10Gi
+{{- end -}}
+
+{{/*
+Testing monitoring with minimal resources
+*/}}
+{{- define "eoapi.monitoring.testing" -}}
+metricsServer:
+  enabled: true
+  apiService:
+    create: true
+prometheus:
+  enabled: true
+  alertmanager:
+    enabled: false
+  prometheus-pushgateway:
+    enabled: false
+  kube-state-metrics:
+    enabled: true
+  prometheus-node-exporter:
+    enabled: true
+    resources: {{- include "eoapi.resources.small" . | nindent 6 }}
+  server:
+    service:
+      type: ClusterIP
+    persistentVolume:
+      enabled: false
+{{- end -}}