Helm and GitOps — Kubernetes (K8s) & AKS

13. Helm and GitOps

Intermediate★ Must knowLesson 13 of 15

bash

helm create shop-api                       # chart skeleton: Chart.yaml, values.yaml, templates/
helm install shop ./shop-api -n shop -f values-prod.yaml --set image.tag=1.4.2
helm upgrade --install shop ./shop-api -n shop -f values-prod.yaml
helm list -n shop
helm history shop -n shop
helm rollback shop 3 -n shop
helm template ./shop-api -f values-prod.yaml      # render YAML locally

yaml

# templates/deployment.yaml (excerpt)
image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
replicas: {{ .Values.replicaCount }}

GitOps (Argo CD, Flux): the desired state lives in Git; an in-cluster agent pulls and applies changes and reverts drift. Deployments become pull requests; rollback = git revert.