helm komutu

Giriş

values.yaml

Açıklaması şöyle

This file declares variables to be passed into the templates. Modify the file to include your Docker image, tag, and service name, ports, type, and database values

Templates Dosyaları

Açıklaması şöyle

The most important piece of the puzzle is the templates/ directory. This is where Helm finds the YAML definitions for your Services, Deployments and other Kubernetes objects. If you already have definitions for your application, all you need to do is replace the generated YAML files for your own. What you end up with is a working chart that can be deployed using the helm install command.

It's worth noting however, that the directory is named templates, and Helm runs each file in this directory through a Go template rendering engine. Helm extends the template language, adding a number of utility functions for writing charts.

templates/service.yaml file

Örnek

Şöyle yaparız

apiVersion: v1
kind: Service
metadata:
name: {{ template "fullname" . }}
labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
spec:
type: {{ .Values.service.type }}
ports:
- port: {{ .Values.service.externalPort }}
    targetPort: {{ .Values.service.internalPort }}
    protocol: TCP
    name: {{ .Values.service.name }}
selector:
    app: {{ template "fullname" . }}

Eğer dry run yaparsak çıktı olarak şunu alırız

helm install --dry-run --debug ./mychart
...
# Source: mychart/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: pouring-puma-mychart
labels:
    chart: "mychart-0.1.0"
spec:
type: ClusterIP
ports:
- port: 80
    targetPort: 80
    protocol: TCP
    name: nginx
selector:
    app: pouring-puma-mychart
...

templates/deployment.yaml file

Açıklaması şöyle

This file contains the instructions to launch the application container.