add statsd service monitor into helm chart

Author: ido177

chart/templates/statsd/statsd-servicemonitor.yaml

@@ -0,0 +1,57 @@
+{{/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+*/}}
+
+######################################
+## Airflow Statsd ServiceMonitor
+######################################
+{{- if and .Values.statsd.enabled .Values.statsd.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "airflow.fullname" . }}-statsd
+  namespace: {{ default .Release.Namespace .Values.statsd.serviceMonitor.namespace | quote }}
+  labels:
+    tier: airflow
+    component: statsd-service-monitor
+    release: {{ .Release.Name }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    heritage: {{ .Release.Service }}
+    app.kubernetes.io/component: metrics
+    {{- with .Values.statsd.serviceMonitor.labels }}
+      {{- toYaml . | nindent 4 }}
+    {{- end }}
+spec:
+  endpoints:
+    - path: /metrics
+      honorLabels: {{ .Values.statsd.serviceMonitor.honorLabels }}
+      port: statsd-scrape
+      {{- if .Values.statsd.serviceMonitor.interval }}
+      interval: {{ .Values.statsd.serviceMonitor.interval }}
+      {{- end }}
+      {{- if .Values.statsd.serviceMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ .Values.statsd.serviceMonitor.scrapeTimeout }}
+      {{- end }}
+  selector:
+    matchLabels:
+      tier: airflow
+      component: statsd
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+{{- end }}

chart/values.schema.json

@@ -7337,6 +7337,50 @@
                         ],
                         "additionalProperties": false
                     }
+                },
+                "serviceMonitor": {
+                    "description": "ServiceMonitor configuration for Prometheus scraping of StatsD metrics.",
+                    "type": "object",
+                    "x-docsSection": "Kubernetes",
+                    "properties": {
+                        "enabled": {
+                            "description": "Enables creation of a ServiceMonitor for StatsD metrics scraping.",
+                            "type": "boolean",
+                            "default": false
+                        },
+                        "honorLabels": {
+                            "description": "If true, keeps original metric labels as exported by the app. If false, Prometheus may override them.",
+                            "type": "boolean",
+                            "default": true
+                        },
+                        "interval": {
+                            "description": "Scrape interval for Prometheus (e.g., 30s, 1m, etc.).",
+                            "type": "string",
+                            "default": "10s"
+                        },
+                        "scrapeTimeout": {
+                            "description": "Timeout for the metrics scrape request.",
+                            "type": "string",
+                            "default": ""
+                        },
+                        "labels": {
+                            "description": "Additional labels to attach to the ServiceMonitor object.",
+                            "type": "object",
+                            "default": {},
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        },
+                        "namespace": {
+                            "description": "Namespace where the ServiceMonitor will be created. If not set, defaults to .Release.Namespace.",
+                            "type": [
+                                "string",
+                                "null"
+                            ],
+                            "default": null
+                        }
+                    },
+                    "additionalProperties": false
                 }
             }
         },

chart/values.yaml

@@ -2406,6 +2406,28 @@ statsd:
   podAnnotations: {}
   env: []
 
+  # StatsD Service Monitor
+  serviceMonitor:
+    # Enables creation of a ServiceMonitor for StatsD metrics scraping.
+    enabled: false
+
+    # If true, keeps original metric labels as exported by the app.
+    # If false, Prometheus may override them.
+    honorLabels: true
+
+    # Scrape interval for Prometheus (e.g., 30s, 1m, etc.).
+    interval: 10s
+
+    # Timeout for the metrics scrape request.
+    scrapeTimeout: ""
+
+    # Additional labels to attach to the ServiceMonitor object.
+    labels: {}
+
+    # (Optional) Namespace where the ServiceMonitor will be created.
+    # If not set, defaults to .Release.Namespace.
+    # namespace: "monitoring"
+
 # PgBouncer settings
 pgbouncer:
   # Enable PgBouncer