Cloud / HELM Interview Questions
How does ArgoCD integrate with Helm for GitOps deployment patterns?
ArgoCD supports Helm natively as a configuration management tool, enabling GitOps workflows where cluster state is declared in Git and automatically synchronized.
ArgoCD Helm configuration in Application spec:
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: myapp
namespace: argocd
spec:
source:
repoURL: https://github.com/myorg/myrepo
targetRevision: main
path: helm/myapp
helm:
valueFiles:
- values.yaml
- values-{{ .Values.spec.destination.namespace }}.yaml
parameters:
- name: image.tag
value: v1.2.3
- name: replicaCount
value: "3"
releaseName: myapp-helm-release
values: |
ingress:
enabled: true
hosts:
- myapp.example.com
destination:
server: https://kubernetes.default.svc
namespace: production
syncPolicy:
automated:
prune: true
selfHeal: true
allowEmpty: false
syncOptions:
- Validate=true
- CreateNamespace=true
- PrunePropagationPolicy=foreground
Helm value handling in ArgoCD:
- valueFiles - List of value files to merge (relative to chart path)
- parameters - Individual parameter overrides (equivalent to --set)
- values - Inline YAML values (highest precedence)
- fileParameters - Read parameters from file
Multiple sources configuration (helm + kustomize):
spec:
source:
repoURL: https://github.com/myorg/myrepo
path: base/helm
helm:
valueFiles:
- $values/environments/prod/values.yaml
sources:
- repoURL: https://github.com/myorg/env-configs
targetRevision: main
ref: values
ArgoCD Helm specific features:
- Auto-helm version detection (v2 or v3)
- Helm hooks support with sync-wave annotations
- Values from ConfigMap plugins for external sources
- Parameter overrides without modifying Git
Best practices: Store environment-specific values in separate directories, use ApplicationSets for multi-environment deployment, enable selfHeal for configuration drift correction, and use syncPolicy automated with prune to remove orphaned resources.
Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!
Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.
Invest now!!! Get Free equity stock (US, UK only)!
Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.
The Robinhood app makes it easy to trade stocks, crypto and more.
Webull! Receive free stock by signing up using the link: Webull signup.
More Related questions...
