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Lessons (10)

• Internals, Upgrades, Resilience and Interview Questions

  Know what happens inside the control plane, how to upgrade and back up safely, and answer common senior …

• Reusable Modules and Clear Interfaces

  … Upgrading a module can change resource addresses and replacement behavior, so review the upgrade plan and migration guidance …

• Imports, Moved Blocks, and Safe Refactoring

  … Keep migration blocks long enough for all consumers to upgrade. Removing them too early can break upgrades from …

• Containers at Scale: ECS Deep Dive and EKS

  … node groups AWS manages EC2 lifecycle and rolling upgrades Karpenter Provisions the right instance for pending pods in …

• HCL, Resource Addresses, and Project Layout

  … Use terraform init -upgrade only when you intend to reconsider provider selections. Review the lock-file diff and …

• Providers and Your First AWS Resources

  … Review provider release notes before upgrading a real project. bucket prefix lets the provider choose a unique name …

• Your Practical Kubernetes Workflow

  … One installed copy of a chart bash helm upgrade --install shop-api ./shop-api -f values-prod.yaml …

• Resources, QoS and Scheduling Control

  … limits voluntary disruptions such as node drains and upgrades. yaml apiVersion: policy/v1 kind: PodDisruptionBudget metadata: name: shop …

• Extending Kubernetes: CRDs, Operators and Admission

  … provisioning, failover, backups, upgrades. Well-known operators: cert-manager, Prometheus Operator, CloudNativePG, Strimzi (Kafka), Argo CD, Crossplane. Build …

• Kafka vs RabbitMQ & the Kafka Ecosystem

  … Managed services handle brokers, upgrades and scaling: Confluent Cloud , Amazon MSK , Aiven , Redpanda (a Kafka-compatible engine), Azure …