Install and compare Minikube and Google Kubernetes Engine to gain hands-on experience with a robust, scalable Kubernetes setup, preparing you to use Kubernetes for multi-container applications.

Kubernetes enables per-container environment variables to separate config from images, using the config file's env for cluster-specific values like MySQL host and port, usable by programs or in commands.

Explore init container examples with one app container and two init containers, view pod status and logs, and learn that logs target a specific container with the -c flag.

Learn how annotations differ from labels by storing key-value, non-identifying metadata such as build versions and team contacts, and see how clusters use them.

Scale a deployment with the scale command to reduce replicas from 3 to 1, then edit the object in the default editor; updates apply to the cluster, not config file.

Explore the basic daemon set controller, compare it to deployments, and note that daemon sets lack a replicas field.

Discover how daemon sets in Kubernetes schedule pods across nodes and how to constrain them to specific nodes using advanced scheduling.

Explore how a Kubernetes service acts as a proxy for pods, forwarding traffic to backing pods, while providing abstraction, a stable ClusterIP, and layer 4 load balancing.

Learn how to explicitly set a service's clusterIP by adding the clusterIP field in the config, using a 10.96.0.0/12 range, and why auto-assignment avoids conflicts.

Discover how DNS as an optional cluster add-on enables deterministic service domain names and test cross-namespace access by curling the joke-generator from an indigo namespace.

Build on clusterIP concepts and learn how to expose applications beyond the cluster with externally-routable services in Kubernetes.

Expose a NodePort service externally by opening the same port on every node, so external clients reach the service with traffic routed like a ClusterIP service.

Conclude this chapter and thank learners for watching, then invite them to the next chapter on Kubectl commands.

Apply a single command to multiple Kubernetes components by listing them as arguments, reducing typing when deleting several resources—across different types, such as pods and deployments.

Master the kubectl exec command to run utilities like ifconfig or start an interactive shell inside a running pod’s container, using a double dash for options on the popcorn pod.

Master port-forward to test Kubernetes pods and services locally by forwarding a local port to the joke-generator pod, then to a service, validating debugging and testing workflows.

Explore how the execAction liveness probe in Kubernetes uses a script to create and delete a healthy file; three consecutive failures trigger a pod restart.

Configure liveness probes in Kubernetes by adjusting failureThreshold, successThreshold, and probe timeouts; defaults are three, one, and one second, with timeouts yielding an unknown outcome and no action.