kubernetes-manifest-generator

Kubernetes Manifest Generator

Generate production-ready Kubernetes manifests with security and scalability best practices.

Core Workflow

1. Define resources: Identify required K8s objects
2. Create namespace: Isolate application resources
3. Configure deployments: Pods, replicas, resources
4. Setup services: Networking and load balancing
5. Add ingress: External access routing
6. Configure scaling: HPA and resource limits

Deployment Manifest

# k8s/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: app-deployment
  namespace: production
  labels:
    app: myapp
    version: v1
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
  template:
    metadata:
      labels:
        app: myapp
        version: v1
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9090"
    spec:
      serviceAccountName: myapp-sa
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        fsGroup: 1000
      containers:
        - name: app
          image: myregistry/myapp:v1.0.0
          imagePullPolicy: Always
          ports:
            - name: http
              containerPort: 3000
              protocol: TCP
            - name: metrics
              containerPort: 9090
              protocol: TCP
          env:
            - name: NODE_ENV
              value: production
            - name: DATABASE_URL
              valueFrom:
                secretKeyRef:
                  name: app-secrets
                  key: database-url
            - name: REDIS_HOST
              valueFrom:
                configMapKeyRef:
                  name: app-config
                  key: redis-host
          resources:
            requests:
              cpu: 100m
              memory: 128Mi
            limits:
              cpu: 500m
              memory: 512Mi
          livenessProbe:
            httpGet:
              path: /health/live
              port: http
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          readinessProbe:
            httpGet:
              path: /health/ready
              port: http
            initialDelaySeconds: 5
            periodSeconds: 5
            timeoutSeconds: 3
            failureThreshold: 3
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            capabilities:
              drop:
                - ALL
          volumeMounts:
            - name: tmp
              mountPath: /tmp
            - name: config
              mountPath: /app/config
              readOnly: true
      volumes:
        - name: tmp
          emptyDir: {}
        - name: config
          configMap:
            name: app-config
      affinity:
        podAntiAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
            - weight: 100
              podAffinityTerm:
                labelSelector:
                  matchLabels:
                    app: myapp
                topologyKey: kubernetes.io/hostname
      topologySpreadConstraints:
        - maxSkew: 1
          topologyKey: topology.kubernetes.io/zone
          whenUnsatisfiable: ScheduleAnyway
          labelSelector:
            matchLabels:
              app: myapp