K8s Manifest Generator

Seth HobsonCommunityCreated by Seth Hobson

Skill
Tool integration
Cloud and DevOps
MIT
Low risk

From the author

Create production-ready Kubernetes manifests for Deployments, Services, ConfigMaps, and Secrets following best practices and security standards. Use when generating Kubernetes YAML manifests, creating K8s resources, or implementing production-grade Kubernetes configurations.

— the description by Seth Hobson

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

The k8s-manifest-generator provides a standardized workflow for creating essential Kubernetes resources. It emphasizes cloud-native best practices, such as implementing resource limits, health checks, security contexts, and proper labeling. By following this skill, users can ensure their manifests are well-structured, maintainable, and ready for production environments, while also learning how to troubleshoot common deployment and connectivity issues.

What it does

Provides templates for Deployments, Services, ConfigMaps, and Secrets.
Guides users through defining resource requests, limits, and health probes.
Outlines security best practices like running as non-root and using specific image tags.
Offers troubleshooting steps for common Pod and Service issues.
Suggests organizational patterns like labeling and version control for manifests.
Includes references for advanced deployment and service specifications.

When to use it

When you need to create new Kubernetes resource manifests from scratch.
When you want to ensure your YAML configurations follow production-grade standards.
When you need to define network connectivity via Services or configuration via ConfigMaps.
When you are setting up stateful workloads requiring PersistentVolumeClaims.
When you need to debug common Kubernetes deployment or connectivity failures.

Advantages

Promotes consistency and reliability across Kubernetes environments.
Reduces configuration errors by enforcing best practices like resource limits.
Improves security posture through mandatory security context configurations.
Simplifies the creation process with clear, step-by-step patterns.
Provides actionable troubleshooting guidance for common cluster issues.

Usage examples

“Generate a production-ready Deployment manifest for a web application named 'auth-service' using image 'auth:v1.2.0'.”: The agent provides a YAML manifest including resource requests/limits, liveness/readiness probes, and security context settings.
“How do I expose my application externally using a Kubernetes Service?”: The agent explains the difference between ClusterIP and LoadBalancer types and provides a template for a LoadBalancer service.
“My pod is failing to start, what should I check?”: The agent lists diagnostic commands like kubectl describe and kubectl get events to identify image pull errors or resource constraints.

Install

Download the skill as a ZIP:
https://autogineer.com/agent-skills/wshobson/k8s-manifest-generator/download

Unzip it into the cross-client skills folder of your project:

mkdir -p .agents/skills && unzip k8s-manifest-generator.zip -d .agents/skills

Documentation by Seth Hobson

Kubernetes Manifest Generator

Step-by-step guidance for creating production-ready Kubernetes manifests including Deployments, Services, ConfigMaps, Secrets, and PersistentVolumeClaims.

Purpose

This skill provides comprehensive guidance for generating well-structured, secure, and production-ready Kubernetes manifests following cloud-native best practices and Kubernetes conventions.

When to Use This Skill

Use this skill when you need to:

Create new Kubernetes Deployment manifests
Define Service resources for network connectivity
Generate ConfigMap and Secret resources for configuration management
Create PersistentVolumeClaim manifests for stateful workloads
Follow Kubernetes best practices and naming conventions
Implement resource limits, health checks, and security contexts
Design manifests for multi-environment deployments

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Best Practices Summary

Always set resource requests and limits - Prevents resource starvation
Implement health checks - Ensures Kubernetes can manage your application
Use specific image tags - Avoid unpredictable deployments
Apply security contexts - Run as non-root, drop capabilities
Use ConfigMaps and Secrets - Separate config from code
Label everything - Enables filtering and organization
Follow naming conventions - Use standard Kubernetes labels
Validate before applying - Use dry-run and validation tools
Version your manifests - Keep in Git with version control
Document with annotations - Add context for other developers

Troubleshooting

Pods not starting:

Check image pull errors: kubectl describe pod <pod-name>
Verify resource availability: kubectl get nodes
Check events: kubectl get events --sort-by='.lastTimestamp'

Service not accessible:

Verify selector matches pod labels: kubectl get endpoints <service-name>
Check service type and port configuration
Test from within cluster: kubectl run debug --rm -it --image=busybox -- sh

ConfigMap/Secret not loading:

Verify names match in Deployment
Check namespace
Ensure resources exist: kubectl get configmap,secret

Next Steps

After creating manifests:

Store in Git repository
Set up CI/CD pipeline for deployment
Consider using Helm or Kustomize for templating
Implement GitOps with ArgoCD or Flux
Add monitoring and observability

helm-chart-scaffolding - For templating and packaging
gitops-workflow - For automated deployments
k8s-security-policies - For advanced security configurations

Files

ATTRIBUTION.mdAdded by AutoGineer1008 B
LICENSELicence file added by AutoGineer1.0 KiB
SKILL.md3.0 KiB
assets/configmap-template.yaml6.1 KiB
assets/deployment-template.yaml5.1 KiB
assets/service-template.yaml3.6 KiB
references/deployment-spec.md17.3 KiB
references/details.md10.6 KiB
references/service-spec.md13.8 KiB

assets/deployment-template.yaml

# Production-Ready Kubernetes Deployment Template
# Replace all <placeholders> with actual values

apiVersion: apps/v1
kind: Deployment
metadata:
  name: <app-name>
  namespace: <namespace>
  labels:
    app.kubernetes.io/name: <app-name>
    app.kubernetes.io/instance: <instance-name>
    app.kubernetes.io/version: "<version>"
    app.kubernetes.io/component: <component>  # backend, frontend, database, cache
    app.kubernetes.io/part-of: <system-name>
    app.kubernetes.io/managed-by: kubectl
  annotations:
    description: "<application description>"
    contact: "<team-email>"
spec:
  replicas: 3  # Minimum 3 for production HA
  revisionHistoryLimit: 10

  selector:
    matchLabels:
      app.kubernetes.io/name: <app-name>
      app.kubernetes.io/instance: <instance-name>

  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0  # Zero-downtime deployment

  minReadySeconds: 10
  progressDeadlineSeconds: 600

  template:
    metadata:
      labels:
        app.kubernetes.io/name: <app-name>
        app.kubernetes.io/instance: <instance-name>
        app.kubernetes.io/version: "<version>"
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9090"
        prometheus.io/path: "/metrics"

    spec:
      serviceAccountName: <app-name>

      # Pod-level security context
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 1000
        fsGroup: 1000
        seccompProfile:
          type: RuntimeDefault

      # Init containers (optional)
      initContainers:
      - name: init-wait
        image: busybox:1.36
        command: ['sh', '-c', 'echo "Initializing..."']
        securityContext:
          allowPrivilegeEscalation: false
          runAsNonRoot: true
          runAsUser: 1000

      containers:
      - name: <container-name>
        image: <registry>/<image>:<tag>  # Never use :latest
        imagePullPolicy: IfNotPresent

        ports:
        - name: http
          containerPort: 8080
          protocol: TCP
        - name: metrics
          containerPort: 9090
          protocol: TCP

        # Environment variables
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP

        # Load from ConfigMap and Secret
        envFrom:
        - configMapRef:
            name: <app-name>-config
        - secretRef:
            name: <app-name>-secret

        # Resource limits
        resources:
          requests:
            memory: "256Mi"
            cpu: "250m"
          limits:
            memory: "512Mi"
            cpu: "500m"

        # Startup probe (for slow-starting apps)
        startupProbe:
          httpGet:
            path: /health/startup
            port: http
          initialDelaySeconds: 0
          periodSeconds: 10
          timeoutSeconds: 3
          failureThreshold: 30  # 5 minutes to start

        # Liveness probe
        livenessProbe:
          httpGet:
            path: /health/live
            port: http
          initialDelaySeconds: 30
          periodSeconds: 10
          timeoutSeconds: 5
          failureThreshold: 3

        # Readiness probe
        readinessProbe:
          httpGet:
            path: /health/ready
            port: http
          initialDelaySeconds: 5
          periodSeconds: 5
          timeoutSeconds: 3
          failureThreshold: 3

        # Volume mounts
        volumeMounts:
        - name: tmp
          mountPath: /tmp
        - name: cache
          mountPath: /app/cache
        # - name: data
        #   mountPath: /var/lib/app

        # Container security context
        securityContext:
          allowPrivilegeEscalation: false
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
          capabilities:
            drop:
            - ALL

        # Lifecycle hooks
        lifecycle:
          preStop:
            exec:
              command: ["/bin/sh", "-c", "sleep 15"]  # Graceful shutdown

      # Volumes
      volumes:
      - name: tmp
        emptyDir: {}
      - name: cache
        emptyDir:
          sizeLimit: 1Gi
      # - name: data
      #   persistentVolumeClaim:
      #     claimName: <app-name>-data

      # Scheduling
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
          - weight: 100
            podAffinityTerm:
              labelSelector:
                matchLabels:
                  app.kubernetes.io/name: <app-name>
              topologyKey: kubernetes.io/hostname

      topologySpreadConstraints:
      - maxSkew: 1
        topologyKey: topology.kubernetes.io/zone
        whenUnsatisfiable: ScheduleAnyway
        labelSelector:
          matchLabels:
            app.kubernetes.io/name: <app-name>

      terminationGracePeriodSeconds: 30

      # Image pull secrets (if using private registry)
      # imagePullSecrets:
      # - name: regcred

Requirements and compatibility

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

What our scanner noticed· Low risk

Instructions that use the network

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Created by

Seth Hobson

Publisher

Seth Hobson (Community)

Source

wshobson/agents · plugins/kubernetes-operations/skills/k8s-manifest-generator · commit 4bde316

Licence

MIT License (redistribution allowed)

LICENSE (added by AutoGineer from LICENSE)
ATTRIBUTION.md (written by AutoGineer)

Synced

2026-11-09

AutoGineer is not affiliated with or endorsed by Seth Hobson or Seth Hobson.

Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download k8s-manifest-generator.zip