From 924e498a7b23b26bd1bbbe9fb90c74547c56e37e Mon Sep 17 00:00:00 2001 From: Jack Jackson Date: Mon, 20 Feb 2023 15:49:40 -0800 Subject: [PATCH] First commit --- .drone.yaml | 34 ++++++++++++++ README.md | 3 ++ app/Dockerfile | 12 +++++ app/main.py | 27 +++++++++++ app/requirements.txt | 2 + helm/Chart.yaml | 24 ++++++++++ helm/templates/NOTES.txt | 22 +++++++++ helm/templates/_helpers.tpl | 62 +++++++++++++++++++++++++ helm/templates/daemon-set.yaml | 42 +++++++++++++++++ helm/templates/service.yaml | 15 +++++++ helm/values.yaml | 82 ++++++++++++++++++++++++++++++++++ 11 files changed, 325 insertions(+) create mode 100644 .drone.yaml create mode 100644 README.md create mode 100644 app/Dockerfile create mode 100644 app/main.py create mode 100644 app/requirements.txt create mode 100644 helm/Chart.yaml create mode 100644 helm/templates/NOTES.txt create mode 100644 helm/templates/_helpers.tpl create mode 100644 helm/templates/daemon-set.yaml create mode 100644 helm/templates/service.yaml create mode 100644 helm/values.yaml diff --git a/.drone.yaml b/.drone.yaml new file mode 100644 index 0000000..65e8bbf --- /dev/null +++ b/.drone.yaml @@ -0,0 +1,34 @@ +kind: pipeline +name: pi-temperature-monitoring +type: docker + +platform: + os: linux + arch: arm64 + +steps: + - name: push-built-image + image: plugins/docker + settings: + context: app/ + dockerfile: app/Dockerfile + registry: gitea.scubbo.org + repo: gitea.scubbo.org/scubbo/pi-temperature-monitoring + tags: ${DRONE_COMMIT_SHA:0:10} + debug: true + launch_debug: true + username: scubbo + password: + from_secret: gitea_password + settings: + mtu: 1450 + - name: telegram_notification + image: appleboy/drone-telegram + settings: + token: + from_secret: telegram_token + to: + from_secret: telegram_convo_id + +image_pull_secrets: + - dockerconfigjson diff --git a/README.md b/README.md new file mode 100644 index 0000000..eef7622 --- /dev/null +++ b/README.md @@ -0,0 +1,3 @@ +Mount with `-v /usr/bin:/usr/bin -v /lib/aarch64-linux-gnu:/lib/aarch64-linux-gnu --device /dev/vchiq debian -p 8555:8555` + +See [here](https://unix.stackexchange.com/a/706181/30828) diff --git a/app/Dockerfile b/app/Dockerfile new file mode 100644 index 0000000..c24b976 --- /dev/null +++ b/app/Dockerfile @@ -0,0 +1,12 @@ +FROM debian + +RUN apt update +RUN apt upgrade -y +RUN apt install -y python3 python3-pip + +ADD requirements.txt / +RUN pip3 install -r /requirements.txt + +ADD main.py /bin +RUN chmod +x /bin/main.py + diff --git a/app/main.py b/app/main.py new file mode 100644 index 0000000..3dd406a --- /dev/null +++ b/app/main.py @@ -0,0 +1,27 @@ +#!/usr/bin/env python3 + +# https://pimylifeup.com/raspberry-pi-temperature/ + +import time +import subprocess + +from prometheus_client import start_http_server, Gauge, REGISTRY, GC_COLLECTOR, PLATFORM_COLLECTOR, PROCESS_COLLECTOR + +REGISTRY.unregister(GC_COLLECTOR) +REGISTRY.unregister(PLATFORM_COLLECTOR) +REGISTRY.unregister(PROCESS_COLLECTOR) + +def setup_gauge(): + g = Gauge(f'sys_cpu_temp_celsius_degrees', 'CPU Temperature') + g.set_function(_get_temp) + +def _get_temp(): + return float(subprocess.run(['/usr/bin/vcgencmd', 'measure_temp'], capture_output=True).stdout.decode('utf-8').replace('temp=', '').replace("'C\n", '')) + +if __name__ == '__main__': + setup_gauge() + start_http_server(8555) + while True: + # Stay alive! + time.sleep(1) + diff --git a/app/requirements.txt b/app/requirements.txt new file mode 100644 index 0000000..60a5c67 --- /dev/null +++ b/app/requirements.txt @@ -0,0 +1,2 @@ +prometheus-client + diff --git a/helm/Chart.yaml b/helm/Chart.yaml new file mode 100644 index 0000000..7b2d3b5 --- /dev/null +++ b/helm/Chart.yaml @@ -0,0 +1,24 @@ +apiVersion: v2 +name: piTemperatureMonitoring +description: A Helm chart for Kubernetes + +# A chart can be either an 'application' or a 'library' chart. +# +# Application charts are a collection of templates that can be packaged into versioned archives +# to be deployed. +# +# Library charts provide useful utilities or functions for the chart developer. They're included as +# a dependency of application charts to inject those utilities and functions into the rendering +# pipeline. Library charts do not define any templates and therefore cannot be deployed. +type: application + +# This is the chart version. This version number should be incremented each time you make changes +# to the chart and its templates, including the app version. +# Versions are expected to follow Semantic Versioning (https://semver.org/) +version: 0.1.0 + +# This is the version number of the application being deployed. This version number should be +# incremented each time you make changes to the application. Versions are not expected to +# follow Semantic Versioning. They should reflect the version the application is using. +# It is recommended to use it with quotes. +appVersion: "1.16.0" diff --git a/helm/templates/NOTES.txt b/helm/templates/NOTES.txt new file mode 100644 index 0000000..064954c --- /dev/null +++ b/helm/templates/NOTES.txt @@ -0,0 +1,22 @@ +1. Get the application URL by running these commands: +{{- if .Values.ingress.enabled }} +{{- range $host := .Values.ingress.hosts }} + {{- range .paths }} + http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }} + {{- end }} +{{- end }} +{{- else if contains "NodePort" .Values.service.type }} + export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "piTemperatureMonitoring.fullname" . }}) + export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}") + echo http://$NODE_IP:$NODE_PORT +{{- else if contains "LoadBalancer" .Values.service.type }} + NOTE: It may take a few minutes for the LoadBalancer IP to be available. + You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "piTemperatureMonitoring.fullname" . }}' + export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "piTemperatureMonitoring.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}") + echo http://$SERVICE_IP:{{ .Values.service.port }} +{{- else if contains "ClusterIP" .Values.service.type }} + export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "piTemperatureMonitoring.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}") + export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}") + echo "Visit http://127.0.0.1:8080 to use your application" + kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT +{{- end }} diff --git a/helm/templates/_helpers.tpl b/helm/templates/_helpers.tpl new file mode 100644 index 0000000..d2212cd --- /dev/null +++ b/helm/templates/_helpers.tpl @@ -0,0 +1,62 @@ +{{/* +Expand the name of the chart. +*/}} +{{- define "piTemperatureMonitoring.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 "piTemperatureMonitoring.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 "piTemperatureMonitoring.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Common labels +*/}} +{{- define "piTemperatureMonitoring.labels" -}} +helm.sh/chart: {{ include "piTemperatureMonitoring.chart" . }} +{{ include "piTemperatureMonitoring.selectorLabels" . }} +{{- if .Chart.AppVersion }} +app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} +{{- end }} +app.kubernetes.io/managed-by: {{ .Release.Service }} +{{- end }} + +{{/* +Selector labels +*/}} +{{- define "piTemperatureMonitoring.selectorLabels" -}} +app.kubernetes.io/name: {{ include "piTemperatureMonitoring.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +{{- end }} + +{{/* +Create the name of the service account to use +*/}} +{{- define "piTemperatureMonitoring.serviceAccountName" -}} +{{- if .Values.serviceAccount.create }} +{{- default (include "piTemperatureMonitoring.fullname" .) .Values.serviceAccount.name }} +{{- else }} +{{- default "default" .Values.serviceAccount.name }} +{{- end }} +{{- end }} diff --git a/helm/templates/daemon-set.yaml b/helm/templates/daemon-set.yaml new file mode 100644 index 0000000..dd831b0 --- /dev/null +++ b/helm/templates/daemon-set.yaml @@ -0,0 +1,42 @@ +apiVersion: apps/v1 +kind: DaemonSet +metadata: + name: {{ include "piTemperatureMonitoring.fullname" . }} + labels: + {{- include "piTemperatureMonitoring.labels" . | nindent 4 }} +spec: + selector: + matchLabels: + {{- include "piTemperatureMonitoring.selectorLabels" . | nindent 6 }} + template: + metadata: + {{- with .Values.podAnnotations }} + annotations: + {{- toYaml . | nindent 8 }} + {{- end }} + labels: + {{- include "piTemperatureMonitoring.selectorLabels" . | nindent 8 }} + spec: + 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: prometheus + containerPort: 8555 + protocol: TCP + livenessProbe: + httpGet: + path: / + port: http + readinessProbe: + httpGet: + path: / + port: http + resources: + {{- toYaml .Values.resources | nindent 12 }} + diff --git a/helm/templates/service.yaml b/helm/templates/service.yaml new file mode 100644 index 0000000..55ff318 --- /dev/null +++ b/helm/templates/service.yaml @@ -0,0 +1,15 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ include "piTemperatureMonitoring.fullname" . }} + labels: + {{- include "piTemperatureMonitoring.labels" . | nindent 4 }} +spec: + type: {{ .Values.service.type }} + ports: + - port: {{ .Values.service.port }} + targetPort: prometheus + protocol: TCP + name: prometheus + selector: + {{- include "piTemperatureMonitoring.selectorLabels" . | nindent 4 }} diff --git a/helm/values.yaml b/helm/values.yaml new file mode 100644 index 0000000..76d904a --- /dev/null +++ b/helm/values.yaml @@ -0,0 +1,82 @@ +# Default values for piTemperatureMonitoring. +# This is a YAML-formatted file. +# Declare variables to be passed into your templates. + +replicaCount: 1 + +image: + repository: nginx + pullPolicy: IfNotPresent + # Overrides the image tag whose default is the chart appVersion. + tag: "" + +imagePullSecrets: [] +nameOverride: "" +fullnameOverride: "" + +serviceAccount: + # Specifies whether a service account should be created + create: true + # Annotations to add to the service account + annotations: {} + # The name of the service account to use. + # If not set and create is true, a name is generated using the fullname template + name: "" + +podAnnotations: {} + +podSecurityContext: {} + # fsGroup: 2000 + +securityContext: {} + # capabilities: + # drop: + # - ALL + # readOnlyRootFilesystem: true + # runAsNonRoot: true + # runAsUser: 1000 + +service: + type: ClusterIP + port: 80 + +ingress: + enabled: false + className: "" + annotations: {} + # kubernetes.io/ingress.class: nginx + # kubernetes.io/tls-acme: "true" + hosts: + - host: chart-example.local + paths: + - path: / + pathType: ImplementationSpecific + tls: [] + # - secretName: chart-example-tls + # hosts: + # - chart-example.local + +resources: {} + # We usually recommend not to specify default resources and to leave this as a conscious + # choice for the user. This also increases chances charts run on environments with little + # resources, such as Minikube. If you do want to specify resources, uncomment the following + # lines, adjust them as necessary, and remove the curly braces after 'resources:'. + # limits: + # cpu: 100m + # memory: 128Mi + # requests: + # cpu: 100m + # memory: 128Mi + +autoscaling: + enabled: false + minReplicas: 1 + maxReplicas: 100 + targetCPUUtilizationPercentage: 80 + # targetMemoryUtilizationPercentage: 80 + +nodeSelector: {} + +tolerations: [] + +affinity: {}