How to Set Up Zero-Downtime GitOps Pipelines with Kubernetes and ArgoCD
To achieve zero-downtime deployments in Kubernetes using ArgoCD, store your Helm charts or K8s manifests in a dedicated Git repository, configure ArgoCD Application CRDs with automated sync policies (selfHeal and prune enabled), and integrate Trivy image scanning in your GitLab CI/Jenkins pipeline prior to updating image tags.
Why Traditional CI/CD Fails at Scale
When managing enterprise applications across Development, UAT, and Production environments, manual kubectl apply commands or script-heavy Jenkins pipelines often lead to configuration drift and unexpected downtime.
1. Prerequisites for Production GitOps
- A running Kubernetes cluster (
k8sor lightweightk3s) - Docker images scanned for vulnerabilities using Trivy
- ArgoCD installed in the
argocdnamespace
2. Configuring Automated Sync in ArgoCD
By enabling selfHeal: true and prune: true inside your ArgoCD application manifest, your production cluster automatically corrects any manual drift and stays 100% synchronized with your Git repository.
Sadia Afrin Lubna
Founder & Principal Systems/DevOps Engineer at Brevrix with extensive enterprise experience in Linux administration, Kubernetes (k8s/k3s), Docker, ArgoCD, Jenkins, and high-availability databases (PostgreSQL, ClickHouse, Redis).