> For the complete documentation index, see [llms.txt](https://atomoh.gitbook.io/kubernetes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://atomoh.gitbook.io/kubernetes/en/operations-guide/ops.md).

# Operations Guide

> **Last Updated**: February 23, 2026

This section provides a production operations guide for EKS Auto Mode environments. It covers infrastructure provisioning with Terraform, CI/CD pipelines, GitOps-based deployment, scaling, observability, resource optimization, and upgrades.

***

## Target Audience

* **Platform Engineers** building production environments with EKS Auto Mode
* **Infrastructure Engineers** operating Terraform/Terragrunt-based IaC
* **DevOps Engineers** building CI/CD pipelines with GitLab CI and ArgoCD
* **SREs** operating Prometheus, Grafana, and Loki observability stacks

***

## Prerequisites

Before starting this operations guide, ensure familiarity with:

* [Getting Started with EKS Auto Mode](/kubernetes/en/amazon-eks/eks-auto-mode/01-getting-started.md)
* Terraform basics (resources, modules, state management)
* [Kubernetes Core Concepts](/kubernetes/en/kubernetes-core-concepts/01-cluster-architecture.md)
* kubectl and Helm CLI experience

***

## Table of Contents

| #  | Document                                                                                                 | Key Topics                                                                              |
| -- | -------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- |
| 01 | [Terraform 3-Layer Infrastructure Setup](/kubernetes/en/operations-guide/ops/01-infrastructure-setup.md) | VPC, EKS Auto Mode, Pod Identity with 3-Layer Terraform                                 |
| 02 | [NLB Weighted Routing and Blue/Green](/kubernetes/en/operations-guide/ops/02-infrastructure-advanced.md) | Dual cluster architecture, NLB weights, DNS routing                                     |
| 03 | [CI Pipelines](/kubernetes/en/operations-guide/ops/03-ci-pipelines.md)                                   | ECR, GitLab Runner, GitHub ARC, multi-platform builds                                   |
| 04 | [ArgoCD Multi-Cluster](/kubernetes/en/operations-guide/ops/04-gitops-multi-cluster.md)                   | Hub-spoke, ApplicationSet, IAM Identity Center SSO                                      |
| 05 | [GitOps Automation](/kubernetes/en/operations-guide/ops/05-gitops-automation.md)                         | Atlantis, FluxCD, Terraform Cloud, AIOps                                                |
| 06 | [Scaling Strategies](/kubernetes/en/operations-guide/ops/06-scaling-strategies.md)                       | HPA custom metrics, KEDA, VPA, Spot utilization                                         |
| 07 | [Operational Alert Configuration](/kubernetes/en/operations-guide/ops/07-observability-alerts.md)        | Network/CPU/Disk/Auto Mode node termination alerts                                      |
| 08 | [Observability Analysis](/kubernetes/en/operations-guide/ops/08-observability-analysis.md)               | Logs/Metrics/Traces correlation, PromQL, LogQL, TraceQL                                 |
| 09 | [Observability Stack Operations](/kubernetes/en/operations-guide/ops/09-observability-stack.md)          | Loki, Tempo, Prometheus/AMP installation and operations                                 |
| 10 | [Resource Optimization](/kubernetes/en/operations-guide/ops/10-resource-optimization.md)                 | Requests/Limits, JVM tuning, framework-specific guide                                   |
| 11 | [EKS Upgrades](/kubernetes/en/operations-guide/ops/11-upgrade-operations.md)                             | Auto Mode zero-downtime upgrade, blue/green strategy                                    |
| 15 | [Zonal Cluster Operations](/kubernetes/en/operations-guide/ops/15-zonal-operations-guide.md)             | TargetGroupBinding weight shifting, native rollback, Kafka/Redis/Aurora AZ-affine reads |

***

## Learning Path

### Recommended Order

1. **Infrastructure** (01-02): Provision VPC/EKS with Terraform
2. **CI/CD** (03-05): Build pipelines and GitOps deployment
3. **Scaling** (06): Establish scaling strategies for workloads
4. **Observability** (07-09): Build monitoring, alerting, and analysis systems
5. **Optimization** (10): Resource efficiency and cost optimization
6. **Upgrades** (11): Establish zero-downtime upgrade procedures

### By Role

| Role                    | Priority Documents |
| ----------------------- | ------------------ |
| Platform Engineer       | 01, 02, 04, 11     |
| DevOps Engineer         | 03, 04, 05         |
| SRE                     | 06, 07, 08, 09, 10 |
| Infrastructure Engineer | 01, 02, 11         |

***

## Relationship with Existing Documentation

This operations guide complements existing concept documentation with practical, code-focused guides:

### Concept Documentation

* [EKS Auto Mode](/kubernetes/en/amazon-eks/eks-auto-mode.md) - Architecture and concepts
* [ArgoCD](/kubernetes/en/gitops/gitops/argocd.md) - GitOps fundamentals
* [KEDA](/kubernetes/en/autoscaling/01-keda.md) - Event-driven autoscaling concepts
* [Karpenter](/kubernetes/en/autoscaling/02-karpenter.md) - Node provisioning concepts

### This Operations Guide

* Terraform HCL code for production infrastructure
* YAML manifests for Kubernetes resources
* PromQL/LogQL queries for observability
* Bash scripts for operational automation
* Step-by-step procedures with validation

***

## Quick Reference

### Common Operations

| Task                              | Document                                                                                  | Section           |
| --------------------------------- | ----------------------------------------------------------------------------------------- | ----------------- |
| Create new EKS cluster            | [01-infrastructure-setup](/kubernetes/en/operations-guide/ops/01-infrastructure-setup.md) | 3-Layer Terraform |
| Add new application to ArgoCD     | [04-gitops-multi-cluster](/kubernetes/en/operations-guide/ops/04-gitops-multi-cluster.md) | ApplicationSet    |
| Configure HPA with custom metrics | [06-scaling-strategies](/kubernetes/en/operations-guide/ops/06-scaling-strategies.md)     | Custom Metrics    |
| Set up alerting for new service   | [07-observability-alerts](/kubernetes/en/operations-guide/ops/07-observability-alerts.md) | Alert Rules       |
| Upgrade EKS version               | [11-upgrade-operations](/kubernetes/en/operations-guide/ops/11-upgrade-operations.md)     | Auto Mode Upgrade |

### Emergency Procedures

| Scenario             | Document                                                                                      | Section             |
| -------------------- | --------------------------------------------------------------------------------------------- | ------------------- |
| Rollback deployment  | [04-gitops-multi-cluster](/kubernetes/en/operations-guide/ops/04-gitops-multi-cluster.md)     | Rollback            |
| Rollback EKS upgrade | [11-upgrade-operations](/kubernetes/en/operations-guide/ops/11-upgrade-operations.md)         | Blue/Green Rollback |
| Scale down for cost  | [06-scaling-strategies](/kubernetes/en/operations-guide/ops/06-scaling-strategies.md)         | Emergency Scale     |
| Debug failing pods   | [08-observability-analysis](/kubernetes/en/operations-guide/ops/08-observability-analysis.md) | Log Analysis        |

***

## Contributing

When adding new operational procedures:

1. Include practical code examples (Terraform, YAML, bash)
2. Provide validation steps for each procedure
3. Document rollback procedures where applicable
4. Add relevant PromQL/LogQL queries for monitoring
5. Cross-reference related concept documentation