Kubernetes YAML Generator

import subprocess
import yaml
import tempfile
import os

def generate_deployment(name, image, replicas=2, port=80, namespace="default"):
    """Generate a Kubernetes Deployment manifest dict."""
    return {
        "apiVersion": "apps/v1",
        "kind": "Deployment",
        "metadata": {"name": name, "namespace": namespace},
        "spec": {
            "replicas": replicas,
            "selector": {"matchLabels": {"app": name}},
            "template": {
                "metadata": {"labels": {"app": name}},
                "spec": {
                    "containers": [{
                        "name": name,
                        "image": image,
                        "ports": [{"containerPort": port}]
                    }]
                }
            }
        }
    }

manifest = generate_deployment("my-app", "nginx:latest", replicas=3)
yaml_str = yaml.dump(manifest, default_flow_style=False)
print(yaml_str)

# Apply using kubectl
with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
    f.write(yaml_str)
    tmp = f.name

result = subprocess.run(["kubectl", "apply", "-f", tmp], capture_output=True, text=True)
print(result.stdout)
os.unlink(tmp)