Add deployment and don't send metrics if no url to scrape

charts/gpu-metrics-exporter/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: gpu-metrics-exporter
+description: A Helm chart for Kubernetes
+type: application
+version: 0.1.0
+appVersion: "1.16.0"

charts/gpu-metrics-exporter/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "gpu-metrics-exporter.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "gpu-metrics-exporter.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "gpu-metrics-exporter.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "gpu-metrics-exporter.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "gpu-metrics-exporter.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "gpu-metrics-exporter.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "gpu-metrics-exporter.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "gpu-metrics-exporter.labels" -}}
+helm.sh/chart: {{ include "gpu-metrics-exporter.chart" . }}
+{{ include "gpu-metrics-exporter.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}

charts/gpu-metrics-exporter/templates/configmap.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: gpu-metrics-exporter-config
+data:
+{{- with .Values.config }}
+  {{- toYaml . | nindent 2 }}
+{{- end }}

charts/gpu-metrics-exporter/templates/deployment.yaml

@@ -0,0 +1,72 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "gpu-metrics-exporter.fullname" . }}
+  labels:
+    {{- include "gpu-metrics-exporter.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "gpu-metrics-exporter.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "gpu-metrics-exporter.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "gpu-metrics-exporter.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+          envFrom:
+            - configMapRef:
+                name: gpu-metrics-exporter-config
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          {{- with .Values.volumeMounts }}
+          volumeMounts:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+      {{- with .Values.volumes }}
+      volumes:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/gpu-metrics-exporter/templates/rbac.yaml

@@ -0,0 +1,44 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "gpu-metrics-exporter.serviceAccountName" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "gpu-metrics-exporter.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "gpu-metrics-exporter.fullname" . }}
+  labels:
+    {{- include "gpu-metrics-exporter.labels" . | nindent 4 }}
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  verbs:
+  - get
+  - list
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ include "gpu-metrics-exporter.fullname" . }}
+  labels:
+    {{- include "gpu-metrics-exporter.labels" . | nindent 4 }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ include "gpu-metrics-exporter.fullname" . }}
+subjects:
+- kind: ServiceAccount
+  name: {{ include "gpu-metrics-exporter.serviceAccountName" . }}
+  namespace: {{.Release.Namespace}}
+{{- end }}

charts/gpu-metrics-exporter/values.yaml

@@ -0,0 +1,32 @@
+image:
+  repository: ghcr.io/castai/gpu-metrics-exporter/gpu-metrics-exporter
+  pullPolicy: IfNotPresent
+  tag: ""
+
+imagePullSecrets: []
+
+serviceAccount:
+  create: true
+  automount: true
+  annotations: {}
+
+podAnnotations: {}
+podLabels: {}
+
+podSecurityContext: {}
+
+securityContext: {}
+
+service:
+  type: ClusterIP
+  port: 6061
+
+resources: 
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 128Mi
+
+config: {}

internal/castai/client.go

@@ -93,9 +93,9 @@ func (c client) UploadBatch(ctx context.Context, batch *pb.MetricsBatch) error {
 		case statusCode >= 200 && statusCode < 300:
 			return true, nil
 		case statusCode >= 400 && statusCode < 500:
-			return true, fmt.Errorf("client error: %d %s", statusCode, resp.Status())
+			return true, fmt.Errorf("status code: %d, status: %s", statusCode, resp.Status())
 		default:
-			c.log.Errorf("server error or unexpected response code: %d %s", statusCode, resp.Status())
+			c.log.Errorf("server error or unexpected status code: %d, status: %s", statusCode, resp.Status())
 			return false, nil
 		}
 	})

internal/config/config.go

@@ -9,13 +9,12 @@ import (
 type Config struct {
 	HTTPListenPort      int               `envconfig:"HTTP_LISTEN_PORT" default:"6061"`
 	LogLevel            string            `envconfig:"LOG_LEVEL" default:"info"`
-	KubeConfigPath      string            `envconfig:"KUBE_CONFIG_PATH"`
-	DCGMLabels          map[string]string `envconfig:"DCGM_LABELS" default:"app.kubernetes.io/component:dcgm-exporter"`
+	KubeConfigPath      string            `envconfig:"KUBE_CONFIG_PATH" default:""`
+	DCGMLabels          map[string]string `envconfig:"DCGM_LABELS" default:"app.kubernetes.io/name:dcgm-exporter"`
 	DCGMPort            int               `envconfig:"DCGM_PORT" default:"9400"`
 	DCGMMetricsEndpoint string            `envconfig:"DCGM_METRICS_ENDPOINT" default:"/metrics"`
 	ExportInterval      time.Duration     `envconfig:"EXPORT_INTERVAL" default:"15s"`
 	CastAPI             string            `envconfig:"CAST_API" default:"https://api.cast.ai"`
-	APIToken            string            `envconfig:"API_TOKEN"`
 	ClusterID           string            `envconfig:"CLUSTER_ID"`
 	APIKey              string            `envconfig:"API_KEY"`
 }

internal/exporter/exporter.go

@@ -107,15 +107,23 @@ func (e *exporter) export(ctx context.Context) error {
 		dcgmExporter := dcgmExporterList.Items[i]
 		urls[i] = fmt.Sprintf("http://%s:%d%s", dcgmExporter.Status.PodIP, e.cfg.DCGMExporterPort, e.cfg.DCGMExporterPath)
 	}
+	if len(urls) == 0 {
+		e.log.Info("no dcgm-exporter instances to scrape")
+		return nil
+	}
 
 	metricFamilies, err := e.scraper.Scrape(ctx, urls)
 	if err != nil {
 		return fmt.Errorf("couldn't scrape DCGM exporters %w", err)
 	}
+	if len(metricFamilies) == 0 {
+		e.log.Warnf("no metrics collected from %d dcgm-exporters", len(urls))
+		return nil
+	}
 
 	batch := e.mapper.Map(metricFamilies, time.Now())
 	if err := e.client.UploadBatch(ctx, batch); err != nil {
-		return fmt.Errorf("error whlie sending metrics %d to castai %w", len(batch.Metrics), err)
+		return fmt.Errorf("error whlie sending %d metrics to castai %w", len(batch.Metrics), err)
 	}
 
 	e.log.Infof("successfully exported %d metrics", len(batch.Metrics))

internal/exporter/mapper.go

@@ -3,8 +3,6 @@ package exporter
 import (
 	"time"
 
-	"google.golang.org/protobuf/types/known/timestamppb"
-
 	"github.com/castai/gpu-metrics-exporter/pb"
 )
 
@@ -37,12 +35,12 @@ func (p metricMapper) Map(metricFamilyMaps []MetricFamilyMap, ts time.Time) *pb.
 			}
 			t := family.Type.String()
 			for _, m := range family.Metric {
-				labels := []*pb.Metric_Label{}
-				for _, l := range m.Label {
-					labels = append(labels, &pb.Metric_Label{
-						Name:  *l.Name,
-						Value: *l.Value,
-					})
+				labels := make([]*pb.Metric_Label, len(m.Label))
+				for i, label := range m.Label {
+					labels[i] = &pb.Metric_Label{
+						Name:  *label.Name,
+						Value: *label.Value,
+					}
 				}
 				var newValue float64
 				switch t {
@@ -54,7 +52,6 @@ func (p metricMapper) Map(metricFamilyMaps []MetricFamilyMap, ts time.Time) *pb.
 
 				metric.Measurements = append(metric.Measurements, &pb.Metric_Measurement{
 					Value:  newValue,
-					Ts:     timestamppb.New(ts),
 					Labels: labels,
 				})
 			}

internal/exporter/mapper_test.go

@@ -6,7 +6,6 @@ import (
 
 	dto "github.com/prometheus/client_model/go"
 	"github.com/stretchr/testify/require"
-	"google.golang.org/protobuf/types/known/timestamppb"
 
 	"github.com/castai/gpu-metrics-exporter/internal/exporter"
 	"github.com/castai/gpu-metrics-exporter/pb"
@@ -101,7 +100,6 @@ func TestMetricMapper_Map(t *testing.T) {
 					Measurements: []*pb.Metric_Measurement{
 						{
 							Value: 1.0,
-							Ts:    timestamppb.New(ts),
 							Labels: []*pb.Metric_Label{
 								{Name: "label1", Value: "value1"},
 							},