k8s-expert

Helm charts package Kubernetes manifests as templated, reusable bundles. Create a chart structure with templates for Deployments, Services, and ConfigMaps, define values for configuration, then deploy using `helm install` to consistently roll out applications across clusters without manual YAML edits.

Write manifests declaratively using clear naming conventions and structured fields for Deployments, Services, Ingress, and NetworkPolicies. Validate syntax with `kubectl apply --dry-run=client` and schema validation tools to catch errors before deployment and ensure consistency across environments.

Troubleshoot by inspecting Pod logs with `kubectl logs`, describing Pod status with `kubectl describe pod`, and checking cluster events. Common causes include resource limits, image pull failures, and configuration mismatches; systemically isolate networking, storage, and application layers to identify root causes.

Enforce least privilege by defining RBAC Roles and RoleBindings to restrict API access, and apply NetworkPolicies to control traffic between Pods. Combine with PodSecurityContext to enforce container security settings, creating defense-in-depth policies across your cluster.

Yes. Helm handles complex deployments through templating, values overlays, and chart dependencies. Use separate values files per environment, conditionals in templates, and Helm hooks for lifecycle management to maintain reproducible, declarative infrastructure across development, staging, and production clusters.