charts: add support for podmonitor

charts/atlas-operator/templates/deployment.yaml

@@ -35,6 +35,11 @@ spec:
       containers:
       - image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
         imagePullPolicy: {{ .Values.image.pullPolicy }}
+        {{- if .Values.podMonitor.enabled }}
+        ports:
+          - name: metrics
+            containerPort: 8080
+        {{- end }}
         livenessProbe:
           httpGet:
             path: /healthz

charts/atlas-operator/templates/podmonitor.yaml

@@ -0,0 +1,54 @@
+{{- if .Values.podMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  labels:
+    {{- include "atlas-operator.labels" . | nindent 4 }}
+    {{- with .Values.podMonitor.labels }}
+    {{- tpl (toYaml .) $ | nindent 4 }}
+    {{- end }}
+  name: {{ include "atlas-operator.fullname" . }}
+  namespace: {{ default .Release.Namespace .Values.podMonitor.namespace }}
+spec:
+  podMetricsEndpoints:
+    - port: metrics
+      {{- with .Values.podMonitor.path }}
+      path: {{ . }}
+      {{- end }}
+      {{- with .Values.podMonitor.interval }}
+      interval: {{ . }}
+      {{- end }}
+      {{- with .Values.podMonitor.scheme }}
+      scheme: {{ . }}
+      {{- end }}
+      {{- with .Values.podMonitor.bearerTokenSecret }}
+      bearerTokenSecret: {{ . }}
+      {{- end }}
+      {{- with .Values.podMonitor.tlsConfig }}
+      tlsConfig:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ . }}
+      {{- end }}
+      honorLabels: {{ .Values.podMonitor.honorLabels }}
+      {{- with .Values.podMonitor.metricRelabelings }}
+      metricRelabelings:
+        {{- tpl (toYaml .) $ | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podMonitor.relabelings }}
+      relabelings:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+  {{- with .Values.podMonitor.podTargetLabels }}
+  podTargetLabels:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  jobLabel: {{ default "app.kubernetes.io/name" .Values.podMonitor.jobLabel }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{- include "atlas-operator.selectorLabels" . | nindent 6 }}
+{{- end }}

charts/atlas-operator/values.yaml

@@ -74,3 +74,36 @@ extraVolumeMounts: []
 #     mountPath: /extra-volume
 #     readOnly: true
 
+# -- PodMonitor defines monitoring for a set of pods.
+# ref. https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#monitoring.coreos.com/v1.PodMonitor
+podMonitor:
+  enabled: false
+  # Namespace in which to deploy the PodMonitor. Defaults to the release namespace.
+  namespace: ""
+  # Additional labels to be defined on a PodMonitor object, e.g. setting a label to match podMonitorSelector if one is used in Prometheus
+  labels: {}
+    # release: kube-prometheus-stack
+  # PodTargetLabels defines the labels which are transferred from the associated Kubernetes Pod object.
+  podTargetLabels: []
+  # The label to use to retrieve the job name from. Defaults to app.kubernetes.io/name.
+  jobLabel: ""
+
+  # HTTP scheme to use for scraping.
+  scheme: "http"
+  # HTTP path from which to scrape for metrics.
+  path: "/metrics"
+  # Secret to mount to read bearer token for scraping targets.
+  bearerTokenSecret: {}
+  # TLS configuration to use when scraping the target.
+  tlsConfig: {}
+  # Interval at which Prometheus scrapes the metrics from the target.
+  interval: ""
+  # Timeout after which Prometheus considers the scrape to be failed.
+  scrapeTimeout: ""
+  # When true, honorLabels preserves the metric’s labels when they collide with the target’s labels.
+  honorLabels: true
+
+  # relabelings configures the relabeling rules to apply the target’s metadata labels
+  relabelings: []
+  # metricRelabelings configures the relabeling rules to apply to the samples before ingestion.
+  metricRelabelings: []