Quick recall
ConfigMaps store non-sensitive config, while Secrets are meant for sensitive values such as tokens or passwords.
Docker packages an app with its runtime and dependencies into a portable container image.
Kubernetes Deployments roll out new replicas gradually while keeping part of the old replica set available.
Kubernetes orchestrates containers across machines and handles scheduling, scaling, and service discovery.
Liveness decides whether a container should be restarted, while readiness decides whether it should receive traffic.
AWS offers load balancers for different layers, with ALB for HTTP/S, NLB for very high-performance TCP/UDP, and GWLB for network appliances.
Logs explain events, metrics show trends, and alerts tell you when user-impacting thresholds break.
Affinity attracts workloads to certain nodes; taints repel workloads unless they have matching tolerations.
A Pod runs containers, a Deployment manages desired pod replicas, and a Service gives stable network access to pods.
Security groups are stateful instance-level firewalls, while NACLs are stateless subnet-level filters.
Terraform declares desired infrastructure state and calculates a plan to move current state toward it.
A rolling deployment replaces instances gradually so the app stays available during release.