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Self-Study: ArgoCD Part 2 - Advanced CI/CD for Containers (3.14)

 

Brief

This self-study module explores advanced deployment strategies using ArgoCD. You will learn about automated sync policies, rollbacks, multi-tenancy, Helm & Kustomize integration, and security best practices for managing large-scale Kubernetes deployments with ArgoCD.

Videos

ArgoCD Sync Policies and Automation

Learn how to configure auto-sync, self-healing, and pruning in ArgoCD.

Watch: https://www.youtube.com/watch?v=e2L6LTg85x8&ab_channel=FoxuTech

ArgoCD Rollbacks & Disaster Recovery

Understand rollback strategies in ArgoCD and how to revert deployments efficiently.

Watch: https://www.youtube.com/watch?v=9hK11Ov74U4&ab_channel=DevOpsDude

Deploying Helm & Kustomize with ArgoCD

Explore how to integrate Helm charts and Kustomize overlays with ArgoCD.

Watch: https://www.youtube.com/watch?v=yj4O0wwkMQI&ab_channel=RayanSlim

ArgoCD Security Best Practices & RBAC

Learn how to enforce security policies and manage access controls in ArgoCD.

Watch: https://www.youtube.com/watch?v=YvMY8to9aHI&ab_channel=AnaisUrlichs

Readings

ArgoCD Sync Policies and Auto-Sync

Understand how ArgoCD automatically syncs Kubernetes applications with Git.

Read: https://argo-cd.readthedocs.io/en/stable/user-guide/sync-options/ (ArgoCD Documentation)

Rolling Back and Managing Revisions in ArgoCD

Learn how to track, compare, and revert application versions.

Read: https://argo-cd.readthedocs.io/en/stable/user-guide/rollback/ (ArgoCD Docs - Rollbacks)

Deploying Helm and Kustomize with ArgoCD

Understand how ArgoCD manages Helm charts and Kustomize configurations.

Read: https://argo-cd.readthedocs.io/en/stable/user-guide/helm/ (Helm Guide in ArgoCD Docs)

ArgoCD Multi-Tenancy & RBAC Best Practices

Discover how to manage multiple teams and projects securely with ArgoCD.

Read: https://argo-cd.readthedocs.io/en/stable/operator-manual/rbac/ (ArgoCD Docs - RBAC)

Observability & Troubleshooting in ArgoCD

Monitor application health, detect issues, and troubleshoot deployments.

Read: https://argo-cd.readthedocs.io/en/stable/operator-manual/observability/ (Observability in ArgoCD)

Key Concepts to Explore

1. ArgoCD Sync Policies & Automated Deployment

  • Manual vs. Automatic Sync – Understanding the differences and use cases.
  • Self-Healing Mechanism – Ensuring that Kubernetes remains in the desired state.
  • Pruning Strategy – Cleaning up orphaned resources automatically.
  • Sync Hooks – Running pre-sync and post-sync actions for complex deployments.

2. Rollback Strategies and Version Control

  • Tracking Deployment History – Using ArgoCD to maintain an audit trail.
  • Rollback to Previous Versions – Reverting to stable releases in case of failures.
  • Promoting Canary Deployments – Phased rollout strategies using ArgoCD.

3. Helm and Kustomize Integration

  • Deploying Helm Charts – Managing Helm applications declaratively.
  • Using Kustomize Overlays – Customizing Kubernetes manifests dynamically.
  • Managing Helm Values in ArgoCD – Best practices for overriding configurations.

4. Multi-Tenancy & Security with RBAC

  • ArgoCD Projects – Isolating deployments per team or business unit.
  • Role-Based Access Control (RBAC) – Defining permissions for users and teams.
  • Git Repository Authentication – Securely managing private repositories.
  • ArgoCD Webhooks & CI/CD Pipelines – Automating deployments with external triggers.

5. Observability & Troubleshooting

  • ArgoCD Application Health Status – Understanding Healthy, Progressing, Degraded, and Suspended states.
  • Monitoring ArgoCD Logs & Events – Using kubectl logs and argocd app events for debugging.
  • Using Prometheus & Grafana for ArgoCD Metrics – Setting up observability dashboards.

Popular Tools Used Alongside ArgoCD

GitOps & CI/CD

  • FluxCD – Alternative GitOps tool for Kubernetes.
  • Spinnaker – Multi-cloud continuous delivery platform.
  • Tekton – Kubernetes-native CI/CD framework.

Infrastructure as Code (IaC)

  • Terraform – Infrastructure automation for Kubernetes clusters.
  • Crossplane – Extending Kubernetes API with declarative infrastructure management.

Monitoring & Security

  • Prometheus & Loki – Metrics and logging for Kubernetes.
  • OpenTelemetry – Distributed tracing and observability.
  • Kyverno & OPA (Open Policy Agent) – Policy enforcement and security controls.

Helpful Links (References)

ArgoCD Official Documentation

Read: https://argo-cd.readthedocs.io/en/stable/

GitOps Deployment Best Practices

Read: https://www.weave.works/technologies/gitops/

Multi-Tenancy and RBAC in ArgoCD

Read: https://argo-cd.readthedocs.io/en/stable/operator-manual/rbac/

ArgoCD Observability & Metrics

Read: https://argo-cd.readthedocs.io/en/stable/operator-manual/observability/

ArgoCD CLI Commands Cheat Sheet

Read: https://argo-cd.readthedocs.io/en/stable/user-guide/commands/

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