
Kubernetes operators: a complete guide
Learn how Kubernetes operators extend the API to manage application lifecycle, stateful systems, upgrades, backups, and automation.
Learn Kubernetes fundamentals, troubleshoot GPU workloads, and monitor ML infrastructure with practical guides for data scientists and platform engineers.
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Learn how Kubernetes operators extend the API to manage application lifecycle, stateful systems, upgrades, backups, and automation.

A practical guide to Kubernetes monitoring layers, useful metrics, workload visibility, and the limits of raw cluster telemetry.

Connect NGINX metrics to Prometheus with the NGINX Prometheus exporter and configure scraping for basic service monitoring.

Use kubectl delete safely for Kubernetes resources, files, labels, namespaces, force deletion, and cleanup workflows.

Learn how Prometheus exporters expose third-party metrics, how to build a simple exporter, and what practices keep metrics useful.

Understand Prometheus metric types, collection architecture, storage behavior, custom metrics, and Kubernetes monitoring use cases.

Find Kubernetes CPU, memory, object-state, and control plane metrics, and read them correctly with kubectl and your monitoring tools.

Use Pod certificate projections and trust bundles for workload TLS, with signer prerequisites and rotation handling for long-running ML services.

Attach a private-registry pull secret to a Kubernetes ServiceAccount, select it for a Polyaxon operation, and verify the new Pod can use the intended image.

Correlate Kubernetes object state, container usage, and node health when investigating a Polyaxon workload.

Instrument application request metrics in a Polyaxon service and configure a separate Prometheus collector to scrape them.

Monitor Kubernetes control planes, nodes, containers, schedulers, applications, and ML outcomes with useful correlations and controlled cardinality.

How to use Minikube for local Kubernetes development, basic cluster operations, and testing ML workloads before moving to shared infrastructure.

Understand Kubernetes StorageClasses, dynamic provisioning, reclaim policies, volume binding, and persistent volume claims.

Deploy a single PostgreSQL instance with a Secret, persistent storage, and private access, then verify that its data survives a Pod replacement.

Diagnose kubectl command not found errors caused by missing installs, PATH issues, permissions, Docker state, or Minikube command syntax.

Understand the Kubernetes control plane, its core components, and the operational practices that keep scheduling and reconciliation healthy.

Build layered Kubernetes DDoS protection with upstream filtering, edge controls, workload isolation, resource safeguards, observability, and tested response plans.

Design encryption for Kubernetes data at rest and in transit, with workload identity, certificate rotation, key ownership, and verifiable coverage.

Kubernetes fundamental notions and basics of workloads for data-scientists and machine learning engineers.

Compare Kubernetes StatefulSets and Deployments, including identity, storage, scaling, rollout behavior, and common use cases.

Use Kubernetes network policies to control pod traffic, restrict lateral movement, and make cluster networking less permissive by default.

Use kubectl logs to inspect pod, container, and owner resource logs, including timestamps, tailing, selectors, and recent output.

Understand how Docker containers and Kubernetes orchestration solve different parts of the ML delivery path, from reproducible images to scheduled production workloads.