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How to Build, Optimize, & Manage AI on Google Kubernetes Engine

Artificial Intelligence (AI) is quickly changing modern enterprises, but harnessing its full potential demands not only excellent models, but infrastructure expertise. Google Kubernetes Engine (GKE) has emerged as a foundation for AI innovation, providing a platform that combines cloud-native flexibility, enterprise-grade security, and seamless access to advanced accelerators. In a recent webinar, I joined Tom Viilo (Head of Alliances) and Guilhem Tesseyre (CTO and Co-Founder) of Zencore for a deep dive into how technical leaders can design, optimize, and operate GKE environments for AI at scale.

Engineering Expertise, Google DNA

Founded by former Google Cloud engineers, Zencore specializes exclusively in Google Cloud, guiding organizations from migration through modernization with insights gained from hands-on delivery. Their deep, practical expertise helps clients overcome common adoption challenges and achieve tangible results at scale.

Why GKE?

GKE is a managed Kubernetes offering with AI-friendly capabilities embedded into its architecture, including:

  • Elastic Scalability: Architect GKE clusters to take advantage of node auto-provisioning, workload-based horizontal pod autoscaling (HPA) and vertical pod autoscaling (VPA), and compute classes to right-size resources dynamically. This elasticity is critical when workloads shift from model training (spiking resource demand) to batch/real-time inference.
  • Accelerator Integration: Support for Graphics Processing Units (GPUs) and Tensor Processing Units (TPUs), with straightforward node pool management and per-pod accelerator requests. Engineers can configure taints, tolerations, and node affinity to fine-tune where AI jobs run, maximizing both performance and cost efficiency.
  • End-to-End Pipeline Integration: GKE integrates closely with Google’s Vertex AI platform, BigQuery, Dataflow, and Artifact Registry, enabling teams to build resilient, reproducible Machine Learning Operations (MLOps) pipelines from data prep to model deployment.
  • Security & Policy Automation: Use built-in Shielded GKE Nodes, Binary Authorization, and network policies to lock down AI microservices. Enable Identity and Access Management (IAM), Workload Identity Federation, and Role-Based Access Control (RBAC) for fine-grained, automated access control across development and production stacks.
  • Observability: Instrument and monitor clusters using Google Operations Suite’s deep integration. Set up custom metrics, distributed tracing, and real-time anomaly detection for AI workloads where outages or slowdowns directly impact end users.

Practical Guidance from GKE Experts

Based on their experience building and deploying AI workloads on GKE, Tom and Guilhem shared some guidance on several key areas to focus on:

1. Advanced Cost Optimization

  • Workload Segregation: Use GKE namespaces and labels to separate research, development, and production workloads. Apply quotas to prevent over-consumption.
  • Auto-Scaling Patterns: Implement GPU-optimized auto-scalers (for example, Kube-Metrics-Server paired with custom metrics). Continuously tune thresholds based on model profiling.
  • Hybrid Compute: Blend on-demand and spot GPUs/TPUs. Use workload migration to rebalance as pricing or capacity changes.

2. Multi-Cloud & Hybrid Kubernetes

  • Unified Control Plane: Employ Anthos or Crossplane for cluster federation, unified policy enforcement, and workload migration between cloud/on-prem.
  • Multi-Environment Consistency: Define cluster bootstrapping and security policies as code (using tools like Terraform and Config Connector).
  • Federated Monitoring: Forward logs/metrics to a central observability plane for correlated analysis and security detection.

3. Operational Excellence on GKE

  • Infrastructure-as-Code (IaC): Automate cluster and resource provisioning. Track cluster configurations as versioned artifacts (Terraform and Config Connector can enable this).
  • Zero-Trust Security: Implement identity-aware proxies for all AI Application Programming Interfaces (APIs)/endpoints. Rotate credentials and enable audit logging.
  • Proactive Monitoring: Implement real-time GPU/TPU utilization tracking. Configure alerting for anomalous cost spikes, pending pods, and degraded latency.

Common Roadblocks (and Solutions)

Accelerator Scarcity

Accelerator scarcity can be a significant challenge for organizations relying on specialized hardware, including GPUs. To mitigate this, consider deploying regional clusters that span multiple availability zones, which helps distribute demand and increase the chances of finding available resources. Pre-reserve node pools with commonly used GPU Stock Keeping Units (SKUs) to ensure you have dedicated access when needed. You can also implement fallback mechanisms that allow workloads to gracefully degrade to lower-tier accelerators if the preferred, high-end options are unavailable, ensuring continued operation even under resource constraints.

Resource Fragmentation

Addressing resource fragmentation is important for maximizing the efficiency of your Kubernetes clusters. One effective strategy is to deploy node packing algorithms, which intelligently co-locate compatible workloads on the same nodes, ensuring accelerators are used to their fullest potential rather than sitting idle. Additionally, implement custom scheduling solutions, whether through the native kube-scheduler or tools like Karpenter, to intelligently fill gaps in cluster capacity, preventing underutilization and optimizing resource allocation.

Skill Gaps

To bridge Kubernetes expertise gaps within your team, focus on continuous skill enrichment and proactive risk reduction. Regularly conduct game days that simulate incident response and failover scenarios; these exercises build practical experience and improve your team's ability to react under pressure. Complement this with the adoption of policy-as-code and automation, which standardize configurations and operational procedures, significantly minimizing the risks associated with manual errors and ensuring consistent, reliable cluster management. This reduces day-to-day toil and risk.

Architectural Patterns for AI Workloads

To support the diverse needs of modern AI workloads, organizations increasingly need to build architectural patterns that balance scalability, automation, and efficient resource use across the ML lifecycle, from distributed training to flexible model serving. The following are a few suggestions on how to do that:

  • Distributed Training on GKE: Deploy TensorFlow, PyTorch, or Ray clusters with custom resource definitions (CRDs) to manage head/worker pods, allocate GPUs, and coordinate inter-node communication.
  • AutoML & CI/CD for Models: Orchestrate Vertex AI pipelines from GKE, automating data ingestion, validation, model retraining, and Representational State Transfer (REST)/Google Remote Procedure Calls (gRPC) endpoint deployment.
  • Hybrid Inference Serving: Use Knative or KServe for scaling model endpoints up or down in response to traffic and integrating canary or shadow deployments.

Running and Managing GKE

Once you have your AI workloads up and running on Google Kubernetes Engine, assess where your team’s strengths and focus should lie. If managing GKE clusters, including handling scaling, cost optimization, security, and reliability, is pulling engineers away from model development or customer-facing innovation, it may be time to consider outsourcing infrastructure management. Managed Kubernetes-as-a-Service partners can bring best practices, automation, and proactive support to free your team to focus on core business goals while ensuring production AI workloads remain efficient, secure, and resilient.

The right time to outsource is often when the hidden costs of maintaining and troubleshooting GKE internally outweigh the benefits, or when the pace of business demands more than your current team can sustainably deliver. By partnering with GKE experts, you can maintain full control over your data and ML pipelines, but shortcut complex operational hurdles, thus transforming infrastructure from a distraction into a business accelerator.

Watch the webinar for more details about AI on GKE.