ArgoCD Operations

This guide provides information on managing, troubleshooting, and operating ArgoCD in a Kubernetes environment.

Overview

ArgoCD is a declarative, GitOps continuous delivery tool for Kubernetes that helps teams manage applications across multiple clusters. As a critical component in many Kubernetes environments, understanding how to effectively operate ArgoCD is essential for maintaining reliable deployments.

Key Topics

Application Management

The Application Management guide covers:

Creating and configuring Applications and ApplicationSets
Managing application sync policies
Bulk operations for efficient management
Best practices for organizing applications

Learn how to efficiently manage your applications in our detailed guide.

Troubleshooting

The Troubleshooting guide covers:

Diagnosing and fixing sync failures
Resolving resource health issues
Recovering from serious failures
Performance optimization techniques

When things go wrong, refer to our troubleshooting guide for solutions.

Common Commands

Here are some frequently used commands for ArgoCD operations:

# Get all applications
kubectl get applications -n argocd

# Check application sync status
kubectl get applications -n argocd -o custom-columns=NAME:.metadata.name,SYNC:.status.sync.status,HEALTH:.status.health.status

# Restart ArgoCD components
kubectl rollout restart deployment -l app.kubernetes.io/part-of=argocd -n argocd

# Force refresh an application
kubectl patch application <app-name> -n argocd --type=merge -p '{"metadata":{"annotations":{"argocd.argoproj.io/refresh":"hard"}}}'

Maintenance Tasks

Regular Health Checks

Perform these checks regularly to ensure your ArgoCD installation is healthy:

Verify all ArgoCD pods are running:
Terminal window
```
kubectl get pods -n argocd
```

Check for applications with sync issues:

kubectl get applications -n argocd -o custom-columns=NAME:.metadata.name,SYNC:.status.sync.status | grep -v Synced

Monitor resource usage:
Terminal window
```
kubectl top pod -n argocd
```

Backup and Restore

It’s recommended to regularly back up your ArgoCD configuration:

# Backup all ArgoCD resources
kubectl get all,applications,applicationsets,appprojects -n argocd -o yaml > argocd-backup.yaml

Best Practices

Use ApplicationSets: Convert individual applications to ApplicationSets for better management
Implement Projects: Organize applications into logical groups with proper access controls
Configure Resource Health Checks: Customize health checks for your specific resource types
Regular Auditing: Review sync statuses and resource health regularly
Performance Tuning: Adjust resource limits and parallelism for large-scale deployments