Homework 2 (metrics)

HelmfileHomework/HelmfileHomework.csproj

@@ -7,8 +7,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.5"/>
-        <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0"/>
+        <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.5" />
+        <PackageReference Include="prometheus-net.AspNetCore" Version="8.2.1" />
+        <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
     </ItemGroup>
 
 </Project>

HelmfileHomework/Program.cs

@@ -1,6 +1,7 @@
 using HelmfileHomework;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.Extensions.Diagnostics.HealthChecks;
+using Prometheus;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -34,4 +35,6 @@
 
 app.UseHttpsRedirection();
 
+app.UseMetricServer();
+
 app.Run();

helmfile-homework/templates/service.yaml

@@ -3,9 +3,12 @@ kind: Service
 metadata:
   name: {{ .Values.app.service }}
   namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ .Release.Name }}
 spec:
   selector:
-    app: {{ .Release.Namespace }}
+    app: {{ .Release.Name }}
   ports:
-  - port: 8080
+  - name: alias8080
+    port: 8080
     targetPort: 8080

helmfile-homework/templates/servicemonitor.yml

@@ -0,0 +1,17 @@
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ .Release.Name }}-servicemonitor
+  labels:
+    release: monitoring
+spec:
+  selector:
+    matchLabels:
+      app: {{ .Release.Name }}
+  namespaceSelector:
+    matchNames:
+  endpoints:
+  - port: alias8080
+    interval: 30s
+    path: /metrics
+    scheme: http

helmfile.yaml

@@ -1,6 +1,18 @@
+repositories:
+- name: prometheus
+  url: https://prometheus-community.github.io/helm-charts
+
 releases:
+  - name: monitoring
+    namespace: monitoring
+    chart: prometheus/kube-prometheus-stack
+    disableValidationOnInstall: true
+
   - name: homework
     namespace: homework
     chart: ./helmfile-homework
     values:
       - ./helmfile-homework/values.yaml
+    needs:
+      - monitoring/monitoring
+    disableValidationOnInstall: true