Merge pull request #16 from nextinterfaces/adds-grafana

Adds Grafana and Prometheus reducing memory requirements

Author: nextinterfaces

apps/items-service/src/html.ts

@@ -44,9 +44,14 @@ export function getRootPageHtml(): string {
 
             <p>A simple REST API service for managing items, built with Bun, Postgre, Jaeger and OpenTelemetry.</p>
 
-            <p><a href="/jaeger" target="_blank">Jaeger Open Telemetry</a></p>
-            <p><a href="/metrics" target="_blank">Prometheus Metrics</a></p>
-            <p><a href="/items/docs" target="_blank">Swagger Docs</a></p>
+            <p><strong>Observability:</strong></p>
+            <p><a href="/jaeger" target="_blank">Jaeger</a> - Distributed tracing</p>
+            <p><a href="/prometheus" target="_blank">Prometheus</a> - Metrics collection</p>
+            <p><a href="/grafana" target="_blank">Grafana</a> - Metrics visualization</p>
+            <p><a href="/items/metrics" target="_blank">Metrics Endpoint</a> - Raw Prometheus metrics</p>
+
+            <p><strong>Documentation:</strong></p>
+            <p><a href="/items/docs" target="_blank">Swagger Docs</a> - Interactive API documentation</p>
 
             <p><strong>API Endpoints:</strong></p>
             <p><a href="/items/v1/health" target="_blank">/v1/health</a> - Service and database health check</p>

infra/k8s/observability/grafana-deployment.yaml

@@ -149,11 +149,11 @@ spec:
           mountPath: /var/lib/grafana
         resources:
           requests:
-            memory: "256Mi"
-            cpu: "100m"
+            memory: "64Mi"
+            cpu: "50m"
           limits:
-            memory: "512Mi"
-            cpu: "500m"
+            memory: "128Mi"
+            cpu: "200m"
         livenessProbe:
           httpGet:
             path: /api/health

infra/k8s/observability/prometheus-deployment.yaml

@@ -56,11 +56,11 @@ spec:
           mountPath: /prometheus
         resources:
           requests:
-            memory: "512Mi"
-            cpu: "200m"
+            memory: "128Mi"
+            cpu: "50m"
           limits:
-            memory: "1Gi"
-            cpu: "500m"
+            memory: "256Mi"
+            cpu: "200m"
         livenessProbe:
           httpGet:
             path: /-/healthy