Add test showing how to use extraConfig and statsd

charts/k8s-monitoring/tests/integration/statsd/deployments/grafana.yaml

@@ -0,0 +1,56 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: grafana
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: grafana
+  namespace: grafana
+spec:
+  interval: 1m
+  url: https://grafana.github.io/helm-charts
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: grafana
+  namespace: grafana
+spec:
+  interval: 1m
+  chart:
+    spec:
+      chart: grafana
+      sourceRef:
+        kind: HelmRepository
+        name: grafana
+        namespace: grafana
+      interval: 1m
+  values:
+    datasources:
+      datasources.yaml:
+        apiVersion: 1
+        datasources:
+          - name: Prometheus
+            type: prometheus
+            url: http://prometheus-server.prometheus.svc:9090
+            isDefault: true
+            basicAuth: true
+            basicAuthUser: promuser
+            jsonData:
+              tlsSkipVerify: true
+            secureJsonData:
+              basicAuthPassword: prometheuspassword
+
+          - name: Loki
+            type: loki
+            url: http://loki-gateway.loki.svc:8080
+            basicAuth: true
+            basicAuthUser: loki
+            jsonData:
+              httpHeaderName1: X-Scope-OrgID
+            secureJsonData:
+              basicAuthPassword: lokipassword
+              httpHeaderValue1: "1"

charts/k8s-monitoring/tests/integration/statsd/deployments/prometheus.yaml

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+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: prometheus
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: prometheus-community
+  namespace: prometheus
+spec:
+  interval: 1m
+  url: https://prometheus-community.github.io/helm-charts
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: prometheus
+  namespace: prometheus
+spec:
+  interval: 1m
+  chart:
+    spec:
+      chart: prometheus
+      version: "^25"
+      sourceRef:
+        kind: HelmRepository
+        name: prometheus-community
+        namespace: prometheus
+      interval: 1m
+  values:
+    server:
+      extraFlags:
+        - enable-feature=otlp-write-receiver
+        - enable-feature=remote-write-receiver
+
+      persistentVolume:
+        enabled: false
+
+      probeHeaders:
+        - name: "Authorization"
+          value: "Basic cHJvbXVzZXI6cHJvbWV0aGV1c3Bhc3N3b3Jk"
+
+      service:
+        servicePort: 9090
+
+    serverFiles:
+      prometheus.yml:
+        scrape_configs: []
+      web.yml:
+        basic_auth_users:
+          promuser: $2a$12$1UJsAG4QnhjjDzqcSVkZmeDxxjgIFOAmzfuVTybTuhhDnYgfuAbAq  # "prometheuspassword"
+
+    configmapReload:
+      prometheus:
+        enabled: false
+
+    alertmanager:
+      enabled: false
+
+    kube-state-metrics:
+      enabled: false
+
+    prometheus-node-exporter:
+      enabled: false
+
+    prometheus-pushgateway:
+      enabled: false

charts/k8s-monitoring/tests/integration/statsd/deployments/query-test.yaml

@@ -0,0 +1,42 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: GitRepository
+metadata:
+  name: k8s-monitoring-test
+spec:
+  interval: 1m
+  url: https://github.com/grafana/k8s-monitoring-helm
+  ref:
+    branch: main
+  ignore: |
+    /*
+    !/charts/k8s-monitoring-test
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: k8s-monitoring-test
+spec:
+  interval: 1m
+  chart:
+    spec:
+      chart: charts/k8s-monitoring-test
+      sourceRef:
+        kind: GitRepository
+        name: k8s-monitoring-test
+      interval: 1m
+  values:
+    tests:
+      - env:
+          CLUSTER: statsd-test
+          PROMETHEUS_URL: http://prometheus-server.prometheus.svc:9090/api/v1/query
+          PROMETHEUS_USER: promuser
+          PROMETHEUS_PASS: prometheuspassword
+        queries:
+          - query: example_gauge{cluster="$CLUSTER", job="integrations/statsd"}
+            type: promql
+            expect:
+              operator: ==
+              value: 42
+          - query: statsd_exporter_build_info{cluster="$CLUSTER", job="integrations/statsd"}
+            type: promql

charts/k8s-monitoring/tests/integration/statsd/deployments/statsd-example.yaml

@@ -0,0 +1,68 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: statsd-example
+data:
+  statsd-example.js: |
+    function sleep(ms) {
+      return new Promise((resolve) => setTimeout(resolve, ms));
+    }
+
+    async function main() {
+      console.log('Starting statsd example');
+      const StatsD = require('node-statsd');
+      const client = new StatsD({
+        host: 'k8smon-alloy-receiver.default.svc',
+        port: 8125,
+      });
+
+      while (true) {
+        console.log('Sending metric');
+        client.gauge('example.gauge', 42, function(error, bytes) {
+          if (error) {
+            console.error('Failed to send metric:', error);
+          } else {
+            console.log('Successfully sent', bytes, 'bytes');
+          }
+        });
+        await sleep(10000);
+      }
+      client.close();
+    }
+    main();
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: statsd-example
+spec:
+  initContainers:
+    - name: dependencies
+      image: node
+      command:
+        - bash
+        - -c
+        - | 
+          npm install node-statsd
+          cp /src/statsd-example.js /workspace
+      workingDir: /workspace
+      volumeMounts:
+        - name: workspace
+          mountPath: /workspace
+        - name: source
+          mountPath: /src
+  containers:
+    - name: main
+      image: node
+      args: ["statsd-example.js"]
+      workingDir: /workspace
+      volumeMounts:
+        - name: workspace
+          mountPath: /workspace
+  volumes:
+    - name: workspace
+      emptyDir: {}
+    - name: source
+      configMap:
+        name: statsd-example

charts/k8s-monitoring/tests/integration/statsd/values.yaml

@@ -0,0 +1,35 @@
+---
+cluster:
+  name: statsd-test
+
+destinations:
+  - name: localPrometheus
+    type: prometheus
+    url: http://prometheus-server.prometheus.svc:9090/api/v1/write
+    auth:
+      type: basic
+      username: promuser
+      password: prometheuspassword
+
+alloy-receiver:
+  enabled: true
+  alloy:
+    extraPorts:
+      - name: statsd-udp
+        port: 8125
+        targetPort: 8125
+        protocol: UDP
+      - name: statsd-tcp
+        port: 8125
+        targetPort: 8125
+        protocol: TCP
+  extraConfig: |-
+    prometheus.exporter.statsd "default" {
+      listen_udp           = ":8125"
+      listen_tcp           = ":8125"
+      parse_dogstatsd_tags = true
+    }
+    prometheus.scrape "statsd" {
+      targets    = prometheus.exporter.statsd.default.targets
+      forward_to = [prometheus.remote_write.localprometheus.receiver]
+    }