Kubernetes beyond the Basics with hands-on labs

Learn to create and manage Kubernetes namespaces, isolate teams, deploy pods and other objects with kubectl or YAML, and delete namespaces with all their resources.

Explore using environment variables in Kubernetes to pass data to containers, demonstrated with a Flask app, Docker, and a NodePort service.

Learn to create ConfigMaps in Kubernetes using imperative and declarative methods, from files, directories, or literals, and understand the role of storing configuration data and how to delete them.

Create a config map from a Redis config file and mount it as a volume in a Redis pod, then verify the data with kubectl.

Learn to set container environment variables in Kubernetes using ConfigMaps, including using configMapKeyRef and envFrom to supply MySQL credentials and other values, while noting secrets for sensitive data.

Learn to create Kubernetes secret objects using imperative methods with kubectl, from file, from directory, or from literal, and via declarative yaml, with data stored in base64.

Learn how to create a Kubernetes secret, mount it as a read-only volume to an nginx pod, and access username and password files under /etc/foo.

Learn to use Kubernetes secrets to set container environment variables in a MySQL pod, creating a secret object and wiring env vars from it for root and John access.

Daemonsets ensure an instance of an app runs on every node and automatically deploys to new nodes, enabling node-wide monitoring in a Kubernetes cluster.

Learn to create and manage daemonsets in Kubernetes, automatically deploying pods on all nodes with node selectors. See how to target specific nodes with node selectors and verify pod placement.

Stateful sets ensure sequential pod creation and stable addresses for stateful databases in Kubernetes, so the master starts first and slaves replicate with constant master addresses.

Create a MySQL stateful set from a YAML file, deploy pods sequentially, and test scale up and down and pod failure with a headless service to maintain stable addresses.

Explore why headless services in Kubernetes direct write traffic to the MySQL master while enabling reads on masters or slaves, using cluster ip and node port services.

Discover how Kubernetes jobs and cron jobs run one-off and scheduled tasks, while deployments keep apps like React, Django, and MySQL running.

Learn how to create and manage Kubernetes jobs with yaml, run pods via kubectl to perform tasks, and monitor completion, parallelism, backoff limits, deadlines, including cron jobs.

Demonstrate how to create a Kubernetes cron job from a yaml file, configure the schedule to run a pod every minute that prints the time and hello.