KalpOps Evolving Eternally

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Jenkins
Kubernetes
Docker
ArgoCD
Helm
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DevOps

Enterprise CI/CD Pipeline Transformation

Redesigned and implemented a complete CI/CD pipeline for a Fortune 500 company, reducing deployment time from 2 weeks to 2 hours with zero-downtime releases and 99.9% uptime.

JenkinsKubernetesDockerArgoCDHelmGitOps

The Challenge: Legacy Deployment Nightmare

A Fortune 500 company was struggling with a legacy deployment process that took 2+ weeks per release, involved manual steps across multiple teams, and resulted in frequent production outages.

⏱️
2+ Week Releases

Manual handoffs between teams, waiting on change approvals

🔧
Manual Deployments

SSH into servers, copy files, restart services manually

⚠️
Frequent Outages

Downtime during every deployment, rollbacks took hours

📋
No Audit Trail

Who deployed what, when? Nobody knew for sure

The Solution: GitOps-Driven CI/CD

I designed and implemented a modern GitOps-based CI/CD pipeline leveraging Kubernetes, ArgoCD, and Jenkins — enabling automated, auditable, zero-downtime deployments.

Source
Git Repository
→
Feature Branch
→
Pull Request
↓
CI Pipeline
Jenkins
→
Build
→
Test
→
Docker Image
↓
GitOps
Config Repo
→
ArgoCD
→
Sync
↓
Runtime
Kubernetes
→
Rolling Update
→
Production

Key Components Implemented

🔧 Jenkins Pipeline
  • Multi-branch pipeline with PR builds
  • Automated testing gates
  • Docker image building and pushing
  • Semantic versioning automation
🐳 Containerization
  • Multi-stage Docker builds
  • Optimized image sizes
  • Private registry with scanning
  • Image promotion across envs
🔄 ArgoCD GitOps
  • Declarative deployments
  • Automatic sync from Git
  • Drift detection and healing
  • Rollback with Git revert
☸️ Kubernetes Platform
  • Rolling update strategy
  • Health checks and probes
  • Horizontal pod autoscaling
  • Resource quotas and limits

Zero-Downtime Deployment Strategy

Achieved zero-downtime releases through a combination of Kubernetes rolling updates, readiness probes, and traffic management:

1
New Pods Start ArgoCD creates new pod replicas with updated image
→
2
Health Checks Readiness probes verify pods are accepting traffic
→
3
Traffic Shift Service routes traffic to healthy new pods
→
4
Old Pods Drain Graceful shutdown after connections complete
● maxSurge: 25% — Extra pods during rollout
● maxUnavailable: 0 — No capacity reduction
● terminationGracePeriodSeconds: 30 — Clean shutdown
● preStop hook — Alert load balancer before termination

Transformation Journey

1
Phase 1: Containerization Dockerized all applications, established base images, set up private registry 4 weeks
2
Phase 2: Kubernetes Migration Set up K8s clusters, migrated workloads, implemented monitoring 6 weeks
3
Phase 3: CI/CD Pipeline Jenkins pipelines, automated testing, image building and pushing 3 weeks
4
Phase 4: GitOps Implementation ArgoCD setup, config repos, automated rollouts, observability 3 weeks

Business Impact

2 weeks → 2 hours Deployment Time ⬇️ 99% reduction
99.9% System Uptime ⬆️ From 97%
0 Deployment Outages ⬇️ From 4/month
10 min Rollback Time ⬇️ From 2 hours
👥
Team Autonomy

Developers deploy independently without ops bottleneck

📊
Full Audit Trail

Every deployment tracked in Git with who, what, when

🔒
Compliance Ready

Automated controls satisfy audit requirements

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