SyntaxDock

DevOps

Kubernetes YAML Validator

Validate Kubernetes manifests against the Kubernetes API schema and detect common configuration issues.

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Result

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    How it works
    
      
    Documentation
    
        
    Kubernetes schema: v1.36.3
    


    About Kubernetes YAML Validator
    

    Validate Kubernetes manifests against a pinned API schema and review common configuration concerns before applying them. Every manifest is processed locally in your browser and is not uploaded to SyntaxDock.
    


    How to use
    

    Paste one or more YAML documents into the workspace, choose a safe example, then select Validate Kubernetes. Review errors, warnings, and recommendations before you share or apply a manifest.
    


    Supported Kubernetes version
    

    Kubernetes schema: v1.36.3. The validator uses a pinned official Kubernetes OpenAPI v3 snapshot, so browser validation does not fetch a schema or contact a cluster.
    


    Multiple documents
    

    Separate resources with YAML document markers. Diagnostics identify the affected resource when its location is available. Fix YAML syntax errors throughout the stream before schema and lint checks can run.
    


    Schema validation
    

    Built-in Kubernetes resources are checked against the pinned official OpenAPI schema. Alpha and beta APIs may depend on feature gates or cluster configuration. Their availability can therefore vary by cluster even when they appear in the pinned snapshot.
    


    Security and reliability checks
    

    Targeted diagnostics highlight floating image tags, missing resource requests or limits on regular containers, privileged containers, privilege escalation, host networking, and sensitive host-path mounts. These checks are review aids and do not replace your organization’s policy controls.
    


    Custom Resources
    

    When a manifest uses an arbitrary type, arbitrary custom resources cannot be fully checked without their CRD schemas. SyntaxDock reports that limitation while retaining ordinary YAML and resource-envelope diagnostics.
    


    Offline limitations
    

    Static OpenAPI validation is not Kubernetes API-server admission. It cannot reproduce admission controllers, authorization, quotas, runtime state, defaulting, mutation, cluster configuration, or every server-side rule. When exact cluster-side behavior matters, run kubectl apply --dry-run=server.
    


    FAQ
    

    A locally valid result does not guarantee that kubectl apply will succeed. Your YAML, resource names, images, environment data, and diagnostics remain in your browser; no manifest data is sent to Rails or analytics.
    


    For examples and workflow details, read the Kubernetes YAML validation guide.
    

    
    

    


    
    
      
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