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DrPsychickDrPsychick
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feat: simple mtr-exporter chart
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‎sickhub/mtr-exporter/.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/

‎sickhub/mtr-exporter/Chart.yaml

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apiVersion: v2
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name: mtr-exporter
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description: A Helm chart for an mtr-exporter pod providing metrics.
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type: application
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version: 0.0.1
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# https://github.com/mgumz/mtr-exporter
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# https://hub.docker.com/r/dragoonaethis/mtr-exporter
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# TODO: create new regularly updated image
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appVersion: "0.3.0"
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home: https://github.com/SickHub
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keywords:
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- mtr
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- exporter
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sources:
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- https://github.com/SickHub/charts
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maintainers:
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- name: SickHub
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email: drpsychick@drsick.net
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url: https://github.com/SickHub
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annotations:
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artifacthub.io/links: |
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- name: mtr-exporter image
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url: https://hub.docker.com/r/dragoonaethis/mtr-exporter

‎sickhub/mtr-exporter/README.md

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# mtr-exporter Helm Chart
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A chart that lets you run an mtr-exporter to monitor routes.
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## Deploy mtr-exporter
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Configure `exporterJobs` in `values.yaml` to do MTRs regularly with given options to certain destinations.
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```shell
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helm repo add sickhub https://sickhub.github.io/charts
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helm repo update
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helm search repo sickhub
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helm upgrade --create-namespace --namespace test --install --values values.yaml mtr-exporter sickhub/mtr-exporter
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```
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## Test locally
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### Lint and template
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```shell
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(cd ..; ct lint --chart-dirs . --charts mtr-exporter)
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helm template test . -f ci/test-values.yaml
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```
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### Test on local k8s
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```shell
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helm upgrade -i mtr-exporter . -f ci/test-values.yaml
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```
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‎sickhub/mtr-exporter/ci/test-values.yaml

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exporterJobs:
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- label: "mtr-example.com"
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mtrFlags: "-z -G 1 example.com"
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- label: "mtr-quad8"
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schedule: "@every 10s"
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mtrFlags: "-z -G 1 -n 8.8.8.8"
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volumeMounts:
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- mountPath: /test
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name: test
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volumes:
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- name: test
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emptyDir: {}

‎sickhub/mtr-exporter/templates/NOTES.txt

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1. Get the application URL by running these commands:
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{{- if contains "NodePort" .Values.service.type }}
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export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "mtr-exporter.fullname" . }})
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export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
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echo http://$NODE_IP:$NODE_PORT
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{{- else if contains "LoadBalancer" .Values.service.type }}
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NOTE: It may take a few minutes for the LoadBalancer IP to be available.
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You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "mtr-exporter.fullname" . }}'
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export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "mtr-exporter.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
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echo http://$SERVICE_IP:{{ .Values.service.port }}
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{{- else if contains "ClusterIP" .Values.service.type }}
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export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "mtr-exporter.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
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export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
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echo "Visit http://127.0.0.1:8080 to use your application"
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kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
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{{- end }}

‎sickhub/mtr-exporter/templates/_helpers.tpl

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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "mtr-exporter.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 "mtr-exporter.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 "mtr-exporter.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 "mtr-exporter.labels" -}}
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helm.sh/chart: {{ include "mtr-exporter.chart" . }}
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{{ include "mtr-exporter.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 "mtr-exporter.selectorLabels" -}}
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app.kubernetes.io/name: {{ include "mtr-exporter.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 "mtr-exporter.serviceAccountName" -}}
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{{- if .Values.serviceAccount.create }}
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{{- default (include "mtr-exporter.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 }}

‎sickhub/mtr-exporter/templates/configmap.yaml

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{{- $checksum := toYaml .Values.exporterJobs | sha256sum | trunc 20 | quote }}
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---
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apiVersion: "v1"
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kind: "ConfigMap"
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metadata:
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name: {{ include "mtr-exporter.fullname" . }}
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labels:
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{{- include "mtr-exporter.labels" . | nindent 4 }}
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annotations:
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values/checksum: {{ $checksum }}
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data:
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mtr-exporter.jobs: |-
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# do not modify, generated from values.yaml by helm chart
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{{- range .Values.exporterJobs }}
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{{ .label }} -- {{ default "@every 60s" .schedule }} -- {{ .mtrFlags }}
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{{- end }}

‎sickhub/mtr-exporter/templates/deployment.yaml

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{{- $checksum := toYaml .Values.exporterJobs | sha256sum | trunc 20 | quote }}
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{ include "mtr-exporter.fullname" . }}
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labels:
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{{- include "mtr-exporter.labels" . | nindent 4 }}
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annotations:
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values/checksum: {{ $checksum }}
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spec:
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replicas: {{ .Values.replicaCount }}
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selector:
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matchLabels:
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{{- include "mtr-exporter.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 "mtr-exporter.labels" . | nindent 8 }}
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{{- with .Values.podLabels }}
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{{- toYaml . | nindent 8 }}
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{{- end }}
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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 "mtr-exporter.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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args:
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- '-jobs'
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- /configMaps/mtr-exporter.jobs
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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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ports:
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- name: http
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containerPort: 8080
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protocol: TCP
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livenessProbe:
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{{- toYaml .Values.livenessProbe | nindent 12 }}
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readinessProbe:
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{{- toYaml .Values.readinessProbe | nindent 12 }}
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resources:
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{{- toYaml .Values.resources | nindent 12 }}
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volumeMounts:
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- mountPath: /configMaps/mtr-exporter.jobs
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name: mtr-exporter-jobs
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subPath: mtr-exporter.jobs
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{{- with .Values.volumeMounts }}
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{{- toYaml . | nindent 12 }}
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{{- end }}
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volumes:
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- name: mtr-exporter-jobs
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configMap:
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name: {{ include "mtr-exporter.fullname" . }}
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{{- with .Values.volumes }}
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{{- toYaml . | nindent 8 }}
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{{- end }}
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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 }}

‎sickhub/mtr-exporter/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 "mtr-exporter.fullname" . }}
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labels:
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{{- include "mtr-exporter.labels" . | nindent 4 }}
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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.port }}
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targetPort: http
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protocol: TCP
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name: http
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selector:
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{{- include "mtr-exporter.selectorLabels" . | nindent 4 }}

‎sickhub/mtr-exporter/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 "mtr-exporter.serviceAccountName" . }}
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labels:
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{{- include "mtr-exporter.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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automountServiceAccountToken: {{ .Values.serviceAccount.automount }}
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{{- end }}

‎sickhub/mtr-exporter/templates/tests/test-connection.yaml

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apiVersion: v1
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kind: Pod
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metadata:
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name: "{{ include "mtr-exporter.fullname" . }}-test-connection"
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labels:
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{{- include "mtr-exporter.labels" . | nindent 4 }}
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annotations:
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"helm.sh/hook": test
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spec:
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containers:
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- name: wget
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image: busybox
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command: ['wget']
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args: ['{{ include "mtr-exporter.fullname" . }}:{{ .Values.service.port }}/metrics']
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restartPolicy: Never

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