DevOps Classroom notes 14/Feb/2026

Helm continued.

• Helm Functions: Refer Here
• Helm custom functions can go into _helpers.tpl file

You are an helm expert
I'm learning helm and i know how to write expressions
Give me examples of helm custom function one by one
wait me to try one then give next

• Helm template

---
apiVersion: v1
kind: Service
metadata:
  name: {{ .Values.services.makeline.name }}  
spec:
  type: {{ .Values.services.makeline.type }}
  ports: {{ .Values.services.makeline.ports | toYaml  | nindent 4 }}
  selector: {{ .Values.services.makeline.selector | toYaml | nindent 4 -}}

• With statement in helm

{{- with .Values.services.makeline }}
apiVersion: v1
kind: Service
metadata:
  name: {{ .name }}
spec:
  type: {{ .type }}
  ports:
{{ .ports | toYaml | nindent 4 }}
  selector:
{{ .selector | toYaml | nindent 4 }}
{{- end }}

• Refer Here for the changes done to use the similar approach for all services.
• Refer Here for helm changes.

Exercise: deploy a helm chart in killercode where helm chart is in github.

Next Topics

• Tommorow
  • Ingress (Ingress Controller – is external)
  • Gateway (Gateway Controller – is external)
  • Access control in k8s
• Next Week
  • Service Mesh
  • Argo CD (Gitops)
  • Monitoring (Observability)
• Week after
  • EKS/AKS
  • Full workshop on k8s deployment with CI/CD Pipeline