[prometheus-opencost-exporter] new OpenCost Prometheus exporter chart

.github/CODEOWNERS

@@ -32,6 +32,7 @@
 /charts/prometheus-nats-exporter/ @caarlos0 @okgolove
 /charts/prometheus-nginx-exporter/ @nlamirault @zeritti
 /charts/prometheus-node-exporter/ @gianrubio @zanhsieh @zeritti
+/charts/prometheus-opencost-exporter/ @mattray
 /charts/prometheus-operator-admission-webhook/ @zeritti
 /charts/prometheus-operator-crds/ @dacamposol @desaintmartin @jkroepke @QuentinBisson
 /charts/prometheus-pgbouncer-exporter/ @stewartshea @zeritti

charts/prometheus-opencost-exporter/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/prometheus-opencost-exporter/Chart.yaml

@@ -0,0 +1,16 @@
+appVersion: 1.107.1
+version: 0.1.0
+description: Prometheus OpenCost Exporter
+home: https://github.com/opencost/opencost
+name: prometheus-opencost-exporter
+sources:
+- https://github.com/prometheus-community/opencost_exporter
+apiVersion: v2
+type: application
+keywords:
+- opencost
+- prometheus
+- exporter
+maintainers:
+- email: mattray@kubecost.com
+  name: mattray

charts/prometheus-opencost-exporter/README.md

@@ -0,0 +1,57 @@
+# Prometheus Opencost Exporter
+
+Prometheus exporter for [OpenCost](https://www.opencost.io) Kubernetes cost monitoring data.
+
+This chart bootstraps a Prometheus [OpenCost exporter](https://www.opencost.io/docs/integrations/opencost-exporter) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
+
+The original source for this Helm chart is https://github.com/opencost/opencost-helm-chart.
+
+## Prerequisites
+
+- Kubernetes 1.23+
+- Helm 3+
+
+## Add Helm Chart Repository
+
+```console
+helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm repo update
+```
+
+_See [`helm repo`](https://helm.sh/docs/helm/helm_repo/) for command documentation._
+
+## Install Chart
+
+```console
+helm install [RELEASE_NAME] prometheus-community/prometheus-opencost-exporter
+```
+
+_See [configuration](#configuring) below._
+
+_See [helm install](https://helm.sh/docs/helm/helm_install/) for command documentation._
+
+## Uninstall Chart
+
+```console
+helm uninstall [RELEASE_NAME]
+```
+
+This removes all the Kubernetes components associated with the chart and deletes the release.
+
+_See [helm uninstall](https://helm.sh/docs/helm/helm_uninstall/) for command documentation._
+
+### Other minor version upgrade
+
+```console
+helm upgrade [RELEASE_NAME] [CHART] --install
+```
+
+_See [helm upgrade](https://helm.sh/docs/helm/helm_upgrade/) for command documentation._
+
+## Configuring
+
+See [Customizing the Chart Before Installing](https://helm.sh/docs/intro/using_helm/#customizing-the-chart-before-installing). To see all configurable options with detailed comments, visit the chart's [values.yaml](./values.yaml), or run these configuration commands:
+
+```console
+helm show values prometheus-community/prometheus-opencost-exporter
+```

charts/prometheus-opencost-exporter/templates/_helpers.tpl

@@ -0,0 +1,99 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "prometheus-opencost-exporter.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- 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 "prometheus-opencost-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 -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "prometheus-opencost-exporter.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "prometheus-opencost-exporter.labels" -}}
+helm.sh/chart: {{ include "prometheus-opencost-exporter.chart" . }}
+{{ include "prometheus-opencost-exporter.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "prometheus-opencost-exporter.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "prometheus-opencost-exporter.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "prometheus-opencost-exporter.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "prometheus-opencost-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).
+*/}}
+{{- define "prometheus-opencost-exporter.prometheus.secretname" -}}
+  {{- if .Values.opencost.prometheus.secret_name -}}
+    {{- .Values.opencost.prometheus.secret_name -}}
+  {{- else -}}
+    {{- include "prometheus-opencost-exporter.fullname" . -}}
+  {{- end -}}
+{{- end -}}
+
+{{/*
+Create the name of the controller service account to use
+*/}}
+{{- define "prometheus-opencost-exporter.prometheusServerEndpoint" -}}
+  {{- if .Values.opencost.prometheus.external.enabled -}}
+    {{ tpl .Values.opencost.prometheus.external.url . }}
+  {{- else -}}
+    {{- $host := tpl .Values.opencost.prometheus.internal.serviceName . }}
+    {{- $ns := tpl .Values.opencost.prometheus.internal.namespaceName . }}
+    {{- $port := .Values.opencost.prometheus.internal.port | int }}
+    {{- printf "http://%s.%s.svc:%d" $host $ns $port -}}
+  {{- end -}}
+{{- end -}}
+
+
+{{/*
+Check that either prometheus external or internal is defined
+*/}}
+{{- define "isPrometheusConfigValid" -}}
+  {{- if and .Values.opencost.prometheus.external.enabled .Values.opencost.prometheus.internal.enabled -}}
+    {{- fail "Only use one of the prometheus setups, internal or external" -}}
+  {{- end -}}
+{{- end -}}

charts/prometheus-opencost-exporter/templates/clusterrole.yaml

@@ -0,0 +1,79 @@
+# Cluster role giving opencost to get, list, watch required resources
+# No write permissions are required
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "prometheus-opencost-exporter.fullname" . }}
+  labels: {{- include "prometheus-opencost-exporter.labels" . | nindent 4 }}
+rules:
+  - apiGroups: [""]
+    resources:
+      - configmaps
+      - deployments
+      - nodes
+      - pods
+      - services
+      - resourcequotas
+      - replicationcontrollers
+      - limitranges
+      - persistentvolumeclaims
+      - persistentvolumes
+      - namespaces
+      - endpoints
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - extensions
+    resources:
+      - daemonsets
+      - deployments
+      - replicasets
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - apps
+    resources:
+      - statefulsets
+      - deployments
+      - daemonsets
+      - replicasets
+    verbs:
+      - list
+      - watch
+  - apiGroups:
+      - batch
+    resources:
+      - cronjobs
+      - jobs
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - autoscaling
+    resources:
+      - horizontalpodautoscalers
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - policy
+    resources:
+      - poddisruptionbudgets
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - storage.k8s.io
+    resources:
+      - storageclasses
+    verbs:
+      - get
+      - list
+      - watch

charts/prometheus-opencost-exporter/templates/clusterrolebinding.yaml

@@ -0,0 +1,18 @@
+{{- if .Values.rbac.enabled }}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ include "prometheus-opencost-exporter.fullname" . }}
+  labels: {{- include "prometheus-opencost-exporter.labels" . | nindent 4 }}
+  {{- with .Values.annotations }}
+  annotations: {{- toYaml . | nindent 4 }}
+  {{- end }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ include "prometheus-opencost-exporter.fullname" . }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ template "prometheus-opencost-exporter.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end }}