charts/default

# 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/

apiVersion: v2

name: default

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: 0.1.1

# 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: "latest"

# Helm chart, который не делает ничего

Универсальная основа для запуска любых контейнеров в K*S.

Пока только **Deployment** и **StatefulSet**.

## Disclaimer

**Beware! Here be _англицизмы_. A lot of.**

*Если вы ничего не поймёте, значит, вам это не нужно.*

## К сути

Этот проект появился, чтобы упростить развёртывание множества однотипных *Deployments* в *Kuberbetes*. Что в таком случае происходит? Обычно создаётся что-то из списка:

  1. Куча *helm charts*, различающихся парой строчек. Поддерживать это всё в актуальном состоянии неудобно.

  2. Один *helm chart* с минимально достаточной расширяемостью путём (пере)определения параметров.

  3. Один *helm template* (но какой!) с кучей параметров, в которых через пару месяцев не разберётся и сам автор. Порог входа для посторонних людей находится в десятке метров над Эверестом.

В данном репозитории находится второй вариант.

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 "default.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 "default.fullname" . }}'

  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "default.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 "default.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 }}

{{/*

Expand the name of the chart.

*/}}

{{- define "default.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 "default.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 "default.chart" -}}

{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}

{{- end }}

{{/*

Common labels

*/}}

{{- define "default.labels" -}}

helm.sh/chart: {{ include "default.chart" . }}

{{ include "default.selectorLabels" . }}

{{- if .Chart.AppVersion }}

app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}

{{- end }}

app.kubernetes.io/managed-by: {{ .Release.Service }}

{{- end }}

{{/*

Selector labels

*/}}

{{- define "default.selectorLabels" -}}

app.kubernetes.io/name: {{ include "default.name" . }}

app.kubernetes.io/instance: {{ .Release.Name }}

{{- end }}

{{/*

Create the name of the service account to use

*/}}

{{- define "default.serviceAccountName" -}}

{{- if .Values.serviceAccount.create }}

{{- default (include "default.fullname" .) .Values.serviceAccount.name }}

{{- else }}

{{- default "default" .Values.serviceAccount.name }}

{{- end }}

{{- end }}

{{/*

Create a default fully qualified headless svc 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 "default.svc-headless-name" -}}

{{- if .Values.fullnameOverride }}

{{- printf "%s-hl" (.Values.fullnameOverride | trunc 60 | trimSuffix "-") }}

{{- else }}

{{- $name := default .Chart.Name .Values.nameOverride }}

{{- if contains $name .Release.Name }}

{{- printf "%s-hl" (.Release.Name | trunc 60 | trimSuffix "-") }}

{{- else }}

{{- printf "%s-hl" (printf "%s-%s" .Release.Name $name | trunc 60 | trimSuffix "-") }}

{{- end }}

{{- end }}

{{- end }}