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How to Validate and Fix Kubernetes YAML - Step by Step Guide

Step 1

Input Your Kubernetes YAML

Copy your Kubernetes manifest YAML and paste it into the left editor panel. The validator supports all Kubernetes resource types including Deployments, Services, Pods, ConfigMaps, Secrets, Ingress, StatefulSets, DaemonSets, and more. You can validate single resources or multiple resources in one YAML file.

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Multi-document support: The validator handles YAML files with multiple resources separated by ---
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From any source: Paste from kubectl output, Helm templates, or existing manifest files
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Try the sample: Click "Sample" to see how the validator detects and fixes common issues
Step 2

Automatic Validation

Click "Validate & Fix" to run comprehensive validation checks. The validator performs multiple checks including YAML syntax validation, Kubernetes schema validation, required field checks, and best practice recommendations. It identifies issues like missing required fields, invalid values, and security concerns.

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Syntax check: Validates YAML syntax and structure for parse errors
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Schema validation: Ensures resources have required fields like apiVersion, kind, and metadata
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Best practices: Checks for resource limits, labels, annotations, and security settings
Step 3

Review Validation Results

The right panel displays validation results and automatically fixed YAML. Errors are highlighted with clear descriptions. The validator automatically adds missing required fields with sensible defaults, corrects invalid values, and applies formatting improvements.

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Error messages: Clear descriptions of what's wrong and where it's located in your YAML
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Auto-fix: Missing fields like namespace or labels are added automatically
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Warnings: Best practice suggestions that don't block deployment but should be addressed
Step 4

Download and Deploy

Download the validated and fixed YAML using the Download button. Save it to your project and deploy using kubectl apply -f your-manifest.yaml. The fixed YAML is ready for production use with proper formatting and required fields.

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Test deployment: Use kubectl apply --dry-run=client to test locally first
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Check permissions: Ensure you have proper RBAC permissions for the resources you're deploying
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Monitor deployment: Use kubectl get pods -w to watch your deployment progress

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