kubernetes-manifest-generator_skill

Overview

This skill generates production-ready Kubernetes YAML manifests for deployments, services, ingress, configmaps, secrets, StatefulSets, CronJobs, HPA, NetworkPolicies and other resources following current best practices. It outputs valid Kubernetes 1.28+ YAML files with sensible defaults for security, observability, and scalability. Manifests include resource requests/limits, health probes, and restrictive security contexts by default.

How this skill works

When invoked with prompts like "create Kubernetes manifest" or "generate k8s yaml", the skill produces complete multi-file YAML manifests tailored to the described application. It applies templates for common stacks (namespaces, configmaps, secrets, deployments, services, ingress, HPA, PDB, networkpolicies), stateful workloads, CronJobs, and external-secrets patterns. Before returning output it validates API versions, labels, selectors, and required fields such as probes and resource limits.

When to use it

• Create manifests for a new microservice (Deployment, Service, ConfigMap, Secret).
• Provision stateful systems with persistent storage (StatefulSet, PVC templates, headless service).
• Set up scheduled tasks (CronJob) with secure service accounts and retry/backoff policies.
• Generate production-ready stacks including HPA, PodDisruptionBudget, NetworkPolicy and ResourceQuota.
• Produce manifest variants like blue/green or canary deployments for release strategies.

Best practices

• Always include requests and limits for CPU and memory to enable autoscaling and stable scheduling.
• Configure liveness, readiness, and startup probes to improve rollout reliability and fast failure detection.
• Use restrictive securityContext and drop capabilities; set runAsNonRoot and readOnlyRootFilesystem where possible.
• Avoid hardcoding secrets; prefer ExternalSecrets, SealedSecrets, or cloud secret stores and reference them.
• Label consistently and ensure service selectors exactly match pod labels; include namespace metadata on resources.

Example use cases

• Generate manifests for a Node.js API with Redis: Deployment, Service, ConfigMap, Secret, HPA.
• Create a StatefulSet and headless service for a PostgreSQL cluster with PVC templates and probes.
• Produce a CronJob for nightly backups with limited retries, TTL, and secure service account.
• Build an ingress manifest with TLS annotations and cert-manager issuer for a web application.
• Generate blue-green deployment manifests with two Deployments and a service switch strategy.