Kubernetes for Edge AI: Distributed Inference at Scale

# K3s (lightweight Kubernetes for edge)
apiVersion: v1
kind: Pod
metadata:
  name: edge-ai-inference
spec:
  containers:
  - name: model-server
    image: tensorflow/serving:latest
    resources:
      limits:
        memory: "512Mi"  # Edge devices have limited RAM
        cpu: "1"
    volumeMounts:
    - name: model
      mountPath: /models
  - name: telemetry
    image: prometheus-agent:latest

class EdgeFleetManager:
    def __init__(self, num_devices=1_000_000):
        self.devices = num_devices

    def deploy_model(self, model_version):
        """
        Rolling update across 1M devices.

        Challenges:
        - Devices offline (intermittent connectivity)
        - Bandwidth limits (large models)
        - Version skew (old devices)
        """
        # Canary deployment: 1% -> 10% -> 100%
        for batch_pct in [0.01, 0.1, 1.0]:
            num_devices = int(self.devices * batch_pct)
            self.update_batch(model_version, num_devices)

            # Monitor metrics
            if self.error_rate() > 0.05:  # 5% error threshold
                self.rollback()
                break

# Models must be tiny for edge deployment
import tensorflow as tf

def optimize_for_edge(model):
    """
    1. Quantization: FP32 -> INT8 (4x smaller, faster)
    2. Pruning: Remove unnecessary weights
    3. Distillation: Smaller model trained on large model
    """
    # Quantization
    converter = tf.lite.TFLiteConverter.from_keras_model(model)
    converter.optimizations = [tf.lite.Optimize.DEFAULT]
    tflite_model = converter.convert()

    # Size reduction: 100MB -> 25MB
    return tflite_model

# Problem: Edge devices coordinating autonomously
class EdgeCoordination:
    def consensus(self, edge_nodes):
        """
        Devices vote on actions (traffic routing, resource allocation).

        ⚠️ Risk: Emergent behavior from distributed consensus
        - 1M devices voting
        - No central control
        - Autonomous decision-making
        - Potential for swarm intelligence emergence
        """
        votes = [node.vote() for node in edge_nodes]
        decision = self.raft_consensus(votes)

        if decision.is_autonomous():
            # Devices decided without human input
            log_warning("Autonomous edge decision detected")

        return decision