[mqtt-exporter] Add new chart (#1584)

* added mqtt-exporter

* added servicemonitor

* fix interval

* fix timeout

* exclude from ct

* docs

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/templates/servicemonitor.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* Update charts/stable/mqtt-exporter/values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

* fix ci

* fix docs

* fixes

* Update values.yaml

* Update values.yaml

Co-authored-by: Bᴇʀɴᴅ Sᴄʜᴏʀɢᴇʀs <me@bjw-s.dev>

charts/stable/mqtt-exporter/.helmignore

@@ -0,0 +1,26 @@
+# 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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+# OWNERS file for Kubernetes
+OWNERS
+# helm-docs templates
+*.gotmpl

charts/stable/mqtt-exporter/Chart.yaml

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+---
+apiVersion: v2
+appVersion: 1.0.0
+description: Simple and generic Prometheus exporter for MQTT. Tested with Mosquitto MQTT and Xiaomi sensors.
+name: mqtt-exporter
+version: 1.0.0
+kubeVersion: ">=1.16.0-0"
+keywords:
+  - zigbee2mqtt
+  - prometheus
+home: https://github.com/k8s-at-home/charts/tree/master/charts/stable/mqtt-exporter
+icon: https://static.veritone.com/assets/favicon/favicon.ico
+sources:
+  - https://github.com/kpetremann/mqtt-exporter
+  - https://hub.docker.com/r/kpetrem/mqtt-exporter
+maintainers:
+  - name: philipp
+    email: phil@hellmi.de
+dependencies:
+  - name: common
+    repository: https://library-charts.k8s-at-home.com
+    version: 4.4.2
+annotations:
+  artifacthub.io/changes: |-
+    - kind: added
+      description: Initial version

charts/stable/mqtt-exporter/README.md

@@ -0,0 +1,62 @@
+# mqtt-exporter
+
+![Version: 1.0.0](https://img.shields.io/badge/Version-1.0.0-informational?style=flat-square) ![AppVersion: 1.0.0](https://img.shields.io/badge/AppVersion-1.0.0-informational?style=flat-square)
+
+Simple and generic Prometheus exporter for MQTT. Tested with Mosquitto MQTT and Xiaomi sensors.
+
+**Homepage:** <https://github.com/k8s-at-home/charts/tree/master/charts/stable/mqtt-exporter>
+
+## Maintainers
+
+| Name | Email | Url |
+| ---- | ------ | --- |
+| philipp | phil@hellmi.de |  |
+
+## Source Code
+
+* <https://github.com/kpetremann/mqtt-exporter>
+* <https://hub.docker.com/r/kpetrem/mqtt-exporter>
+
+## Requirements
+
+Kubernetes: `>=1.16.0-0`
+
+| Repository | Name | Version |
+|------------|------|---------|
+| https://library-charts.k8s-at-home.com | common | 4.4.2 |
+
+## Values
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| env | object | See below | environment variables. See [image docs](https://developer.us-1.veritone.com/machinebox/overview) for more details. |
+| env.LOG_LEVEL | string | `"INFO"` | Logging level |
+| env.MQTT_ADDRESS | string | `"127.0.0.1"` | IP or hostname of MQTT broker |
+| env.MQTT_IGNORED_TOPICS | string | `nil` | Comma-separated lists of topics to ignore. Accepts wildcards. |
+| env.MQTT_KEEPALIVE | int | `60` | Keep alive interval to maintain connection with MQTT broker |
+| env.MQTT_PASSWORD | string | `nil` | Password which should be used to authenticate against the MQTT broker |
+| env.MQTT_PORT | int | `1883` | TCP port of MQTT broker |
+| env.MQTT_TOPIC | string | `"#"` | Topic path to subscribe to |
+| env.MQTT_USERNAME | string | `nil` | Username which should be used to authenticate against the MQTT broker |
+| env.PROMETHEUS_PORT | int | `9000` | HTTP server PORT to expose Prometheus metrics |
+| env.PROMETHEUS_PREFIX | string | `"mqtt_"` | Prefix added to the metric name, example: mqtt_temperature |
+| env.TOPIC_LABEL | string | `"topic"` | Define the Prometheus label for the topic, example temperature{topic="device1"} |
+| env.TZ | string | `"UTC"` | Set the container timezone |
+| env.ZIGBEE2MQTT_AVAILABILITY | string | `"False"` | Normalize sensor name for device availability metric added by Zigbee2MQTT |
+| image.pullPolicy | string | `"IfNotPresent"` | image pull policy |
+| image.repository | string | `"kpetrem/mqtt-exporter"` | image repository |
+| image.tag | string | `"latest"` | image tag |
+| ingress.main | object | See values.yaml | Enable and configure ingress settings for the chart under this key. |
+| metrics.enabled | bool | See values.yaml | Enable and configure a Prometheus serviceMonitor for the chart under this key. |
+| metrics.serviceMonitor.interval | string | `"30s"` | Interval at which Prometheus should scrape metrics |
+| metrics.serviceMonitor.labels | object | `{}` | Additional labels for the Kubernetes `ServiceMonitor` object |
+| metrics.serviceMonitor.scrapeTimeout | string | `"10s"` | Timeout after which the scrape is ended |
+| persistence | object | See values.yaml | Configure persistence settings for the chart under this key. |
+| securityContext.capabilities.drop[0] | string | `"ALL"` |  |
+| securityContext.readOnlyRootFilesystem | bool | `true` |  |
+| securityContext.runAsNonRoot | bool | `true` |  |
+| securityContext.runAsUser | int | `65534` |  |
+| service | object | See values.yaml | Configures service settings for the chart. |
+
+----------------------------------------------
+Autogenerated from chart metadata using [helm-docs v1.5.0](https://github.com/norwoodj/helm-docs/releases/v1.5.0)

charts/stable/mqtt-exporter/README_CONFIG.md.gotmpl

@@ -0,0 +1,9 @@
+{{- define "custom.custom.configuration.header" -}}
+## Custom configuration
+{{- end -}}
+
+{{- define "custom.custom.configuration" -}}
+{{ template "custom.custom.configuration.header" . }}
+
+N/A
+{{- end -}}

charts/stable/mqtt-exporter/ci/ct-values.yaml

@@ -0,0 +1,10 @@
+# Test
+
+additionalContainers:
+  mosquitto:
+    name: mosquitto
+    image: eclipse-mosquitto:1.6.8
+    imagePullPolicy: IfNotPresent
+    ports:
+    - name: mqtt
+      containerPort: 1883

charts/stable/mqtt-exporter/templates/NOTES.txt

@@ -0,0 +1 @@
+{{- include "common.notes.defaultNotes" . -}}

charts/stable/mqtt-exporter/templates/common.yaml

@@ -0,0 +1 @@
+{{ include "common.all" . }}

charts/stable/mqtt-exporter/templates/servicemonitor.yaml

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+{{- if .Values.metrics.enabled }}
+{{- include "common.values.setup" . -}}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "common.names.fullname" . }}
+  labels:
+    {{- include "common.labels" . | nindent 4 }}
+    {{- with .Values.metrics.serviceMonitor.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  annotations:
+    {{- include "common.annotations" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "common.labels.selectorLabels" . | nindent 6 }}
+  endpoints:
+    - port: http
+      {{- with .Values.metrics.serviceMonitor.interval }}
+      interval: {{ . }}
+      {{- end }}
+      {{- with .Values.metrics.serviceMonitor.scrapeTimeout }}
+      scrapeTimeout: {{ . }}
+      {{- end }}
+      path: /metrics
+{{- end }}

charts/stable/mqtt-exporter/values.yaml

@@ -0,0 +1,85 @@
+#
+# IMPORTANT NOTE
+#
+# This chart inherits from our common library chart. You can check the default values/options here:
+# https://github.com/k8s-at-home/library-charts/tree/main/charts/stable/common/values.yaml
+#
+
+image:
+  # -- image repository
+  repository: kpetrem/mqtt-exporter
+  # -- image tag
+  tag: latest
+  # -- image pull policy
+  pullPolicy: IfNotPresent
+
+# -- environment variables. See [image docs](https://developer.us-1.veritone.com/machinebox/overview) for more details.
+# @default -- See below
+env:
+  # -- Set the container timezone
+  TZ: UTC
+  # -- Logging level
+  LOG_LEVEL: INFO
+  # -- Comma-separated lists of topics to ignore. Accepts wildcards.
+  MQTT_IGNORED_TOPICS:
+  # -- IP or hostname of MQTT broker
+  MQTT_ADDRESS: 127.0.0.1
+  # -- TCP port of MQTT broker
+  MQTT_PORT: 1883
+  # -- Topic path to subscribe to
+  MQTT_TOPIC: "#"
+  # -- Keep alive interval to maintain connection with MQTT broker
+  MQTT_KEEPALIVE: 60
+  # -- Username which should be used to authenticate against the MQTT broker
+  MQTT_USERNAME:
+  # -- Password which should be used to authenticate against the MQTT broker
+  MQTT_PASSWORD:
+  # -- HTTP server PORT to expose Prometheus metrics
+  PROMETHEUS_PORT: 9000
+  # -- Prefix added to the metric name, example: mqtt_temperature
+  PROMETHEUS_PREFIX: mqtt_
+  # --  Define the Prometheus label for the topic, example temperature{topic="device1"}
+  TOPIC_LABEL: topic
+  # --  Normalize sensor name for device availability metric added by Zigbee2MQTT
+  ZIGBEE2MQTT_AVAILABILITY: "False"
+
+# -- Configures service settings for the chart.
+# @default -- See values.yaml
+service:
+  main:
+    ports:
+      http:
+        port: 9000
+
+metrics:
+  # -- Enable and configure a Prometheus serviceMonitor for the chart under this key.
+  # @default -- See values.yaml
+  enabled: false
+  serviceMonitor:
+    # -- Interval at which Prometheus should scrape metrics
+    interval: 30s
+    # -- Timeout after which the scrape is ended
+    scrapeTimeout: 10s
+    # -- Additional labels for the Kubernetes `ServiceMonitor` object
+    labels: {}
+
+ingress:
+  # -- Enable and configure ingress settings for the chart under this key.
+  # @default -- See values.yaml
+  main:
+    enabled: false
+
+# -- Configure persistence settings for the chart under this key.
+# @default -- See values.yaml
+persistence:
+  config:
+    enabled: false
+    mountPath: /conf
+
+securityContext:
+  capabilities:
+    drop:
+      - ALL
+  readOnlyRootFilesystem: true
+  runAsNonRoot: true
+  runAsUser: 65534