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Helm 3 chart / helm client 3.2.1
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‎Makefile

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@@ -22,6 +22,11 @@ GOOS ?= linux
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LOCAL_IMAGE ?= local/$(BINARY)
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CLOUD_IMAGE ?= grepplabs/mqtt-proxy:$(TAG)
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HELM_BIN ?= helm3
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HELM_VALUES ?= noop
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SVC_NAME ?= mqtt-proxy
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SVC_NAMESPACE ?= mqtt
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ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
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default: build
@@ -86,3 +91,25 @@ release-publish: release-setup
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.PHONY: release-snapshot
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release-snapshot:
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REVISION=$(REVISION) BRANCH=$(BRANCH) BUILD_DATE=$(BUILD_DATE) $(ROOT_DIR)/bin/goreleaser --debug --rm-dist --snapshot --skip-publish
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.PHONY: helm-template
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helm-template:
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$(HELM_BIN) template $(SVC_NAME) $(ROOT_DIR)/charts/mqtt-proxy \
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-f $(ROOT_DIR)/charts/mqtt-proxy/values-$(HELM_VALUES).yaml \
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--namespace=$(SVC_NAMESPACE)
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.PHONY: helm-install
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helm-install:
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$(HELM_BIN) upgrade $(SVC_NAME) $(ROOT_DIR)/charts/mqtt-proxy \
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-f $(ROOT_DIR)/charts/mqtt-proxy/values-$(HELM_VALUES).yaml \
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--namespace=$(SVC_NAMESPACE) \
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--install \
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--create-namespace
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.PHONY: helm-test
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helm-test:
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$(HELM_BIN) test $(SVC_NAME) \
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--namespace=$(SVC_NAMESPACE)
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‎charts/mqtt-proxy/.helmignore

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

‎charts/mqtt-proxy/Chart.yaml

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apiVersion: v2
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name: mqtt-proxy
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description: A Helm chart for Kubernetes
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# A chart can be either an 'application' or a 'library' chart.
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#
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# Application charts are a collection of templates that can be packaged into versioned archives
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# to be deployed.
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#
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# Library charts provide useful utilities or functions for the chart developer. They're included as
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# a dependency of application charts to inject those utilities and functions into the rendering
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# pipeline. Library charts do not define any templates and therefore cannot be deployed.
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type: application
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# This is the chart version. This version number should be incremented each time you make changes
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# to the chart and its templates, including the app version.
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# Versions are expected to follow Semantic Versioning (https://semver.org/)
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version: 0.1.0
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# This is the version number of the application being deployed. This version number should be
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# incremented each time you make changes to the application. Versions are not expected to
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# follow Semantic Versioning. They should reflect the version the application is using.
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appVersion: 0.0.1

‎charts/mqtt-proxy/templates/_helpers.tpl

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

‎charts/mqtt-proxy/templates/deployment.yaml

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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{ include "mqtt-proxy.fullname" . }}
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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spec:
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{{- if not .Values.autoscaling.enabled }}
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replicas: {{ .Values.replicaCount }}
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{{- end }}
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selector:
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matchLabels:
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{{- include "mqtt-proxy.selectorLabels" . | nindent 6 }}
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template:
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metadata:
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{{- with .Values.podAnnotations }}
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annotations:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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labels:
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{{- include "mqtt-proxy.selectorLabels" . | nindent 8 }}
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spec:
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{{- with .Values.imagePullSecrets }}
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imagePullSecrets:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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serviceAccountName: {{ include "mqtt-proxy.serviceAccountName" . }}
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securityContext:
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{{- toYaml .Values.podSecurityContext | nindent 8 }}
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containers:
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- name: {{ .Chart.Name }}
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securityContext:
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{{- toYaml .Values.securityContext | nindent 12 }}
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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args:
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{{- if .Values.extraArgs }}
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{{ toYaml .Values.extraArgs | indent 12 }}
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{{- end }}
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ports:
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- name: http
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containerPort: {{ .Values.container.http.port }}
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protocol: TCP
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- name: mqtt
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containerPort: {{ .Values.container.mqtt.port }}
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protocol: TCP
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livenessProbe:
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httpGet:
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path: /healthy
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port: http
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readinessProbe:
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httpGet:
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path: /ready
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port: http
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resources:
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{{- toYaml .Values.resources | nindent 12 }}
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{{- with .Values.nodeSelector }}
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nodeSelector:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with .Values.affinity }}
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affinity:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with .Values.tolerations }}
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tolerations:
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{{- toYaml . | nindent 8 }}
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{{- end }}

‎charts/mqtt-proxy/templates/hpa.yaml

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{{- if .Values.autoscaling.enabled }}
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apiVersion: autoscaling/v2beta1
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kind: HorizontalPodAutoscaler
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metadata:
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name: {{ include "mqtt-proxy.fullname" . }}
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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spec:
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scaleTargetRef:
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apiVersion: apps/v1
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kind: Deployment
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name: {{ include "mqtt-proxy.fullname" . }}
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minReplicas: {{ .Values.autoscaling.minReplicas }}
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maxReplicas: {{ .Values.autoscaling.maxReplicas }}
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metrics:
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{{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
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- type: Resource
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resource:
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name: cpu
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targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
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{{- end }}
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{{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
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- type: Resource
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resource:
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name: memory
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targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
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{{- end }}
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{{- end }}

‎charts/mqtt-proxy/templates/service-external.yaml

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{{- if .Values.serviceExternal.enabled }}
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ include "mqtt-proxy.fullname" . }}-external
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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{{- with .Values.serviceExternal.labels -}}
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{{ toYaml . | nindent 4 }}
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{{- end }}
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{{- if .Values.serviceExternal.annotations }}
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annotations:
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{{ tpl (toYaml .Values.serviceExternal.annotations) . | indent 4 }}
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{{- end }}
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spec:
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type: {{ .Values.serviceExternal.type }}
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ports:
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- port: {{ .Values.serviceExternal.port }}
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targetPort: mqtt
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protocol: TCP
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name: mqtt
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{{- if ne .Values.serviceExternal.type "NodePort" }}
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{{- if and (eq .Values.serviceExternal.type "LoadBalancer") (ne .Values.serviceExternal.clusterIP "None") }}
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clusterIP: "{{ .Values.serviceExternal.clusterIP }}"
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{{- end }}
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{{- end }}
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{{- if .Values.serviceExternal.externalIPs }}
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externalIPs:
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{{ toYaml .Values.serviceExternal.externalIPs | indent 4 }}
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{{- end }}
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{{- if .Values.serviceExternal.loadBalancerIP }}
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loadBalancerIP: "{{ .Values.serviceExternal.loadBalancerIP }}"
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{{- end }}
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{{- if .Values.serviceExternal.externalTrafficPolicy }}
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externalTrafficPolicy: "{{ .Values.serviceExternal.externalTrafficPolicy }}"
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{{- end }}
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{{- if .Values.serviceExternal.loadBalancerSourceRanges }}
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loadBalancerSourceRanges:
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{{ toYaml .Values.serviceExternal.loadBalancerSourceRanges | indent 4 }}
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{{- end }}
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selector:
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{{- include "mqtt-proxy.selectorLabels" . | nindent 4 }}
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{{- end }}

‎charts/mqtt-proxy/templates/service.yaml

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apiVersion: v1
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kind: Service
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metadata:
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name: {{ include "mqtt-proxy.fullname" . }}
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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{{- with .Values.service.labels -}}
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{{ toYaml . | nindent 4 }}
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{{- end }}
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{{- if .Values.service.annotations }}
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annotations:
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{{ tpl (toYaml .Values.service.annotations) . | indent 4 }}
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{{- end }}
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spec:
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type: {{ .Values.service.type }}
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ports:
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- port: {{ .Values.service.http.port }}
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targetPort: http
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protocol: TCP
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name: http
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- port: {{ .Values.service.mqtt.port }}
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targetPort: mqtt
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protocol: TCP
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name: mqtt
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selector:
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{{- include "mqtt-proxy.selectorLabels" . | nindent 4 }}

‎charts/mqtt-proxy/templates/serviceaccount.yaml

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{{- if .Values.serviceAccount.create -}}
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: {{ include "mqtt-proxy.serviceAccountName" . }}
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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{{- with .Values.serviceAccount.annotations }}
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annotations:
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{{- toYaml . | nindent 4 }}
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{{- end }}
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{{- end }}

‎charts/mqtt-proxy/templates/servicemonitor.yaml

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{{- if .Values.serviceMonitor.enabled }}
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apiVersion: monitoring.coreos.com/v1
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kind: ServiceMonitor
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metadata:
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name: {{ include "mqtt-proxy.fullname" . }}
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labels:
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{{- include "mqtt-proxy.labels" . | nindent 4 }}
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{{- with .Values.serviceMonitor.labels -}}
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{{ toYaml . | nindent 4 }}
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{{- end }}
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spec:
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endpoints:
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- port: http
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path: /metrics
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interval: {{ .Values.serviceMonitor.interval }}
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scrapeTimeout: {{ .Values.serviceMonitor.scrapeTimeout }}
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namespaceSelector:
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matchNames:
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- {{ .Release.Namespace }}
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selector:
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{{- include "mqtt-proxy.selectorLabels" . | nindent 4 }}
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{{- end }}

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