A presentation at Devnexus 2023 in in Atlanta, GA, USA by Oleg Šelajev
Learn Kubernetes the Java way
Oleg Šelajev Developer relations @shelajev github.com/shelajev oleg@atomicjar.com
OUR OPEN ROLES Technical Account Executive Staff Cloud Engineer CONTACT Sidney Miller @SidneyMiller2 Senior Product Designer sidney@atomicjar.com Senior Manager - Product Marketing atomicjar.com/careers Java Engineer WE’RE HIRING
Testcontainers-java • Created 7 years ago (Docker is 8 years old) • github.com/testcontainers/testcontainers-java • Uses docker-java API • Integrates with frameworks, like Spring, JUnit • Works with anything that runs in a Docker container
fi • Container lifecycle & cleanup • Container & service con guration • Integration with frameworks
testcontainers.com/modules/
testcontainers.com/modules/
Kubernetes in Java? K3S Lightweight Single-Binary Kubernetes
Show me the code
Can I run it?
Show me the code
Can I it talk to it?
Show me the code
Config or it didn’t happen!
Show me the code
How to inspect Kubernetes? keyvalue store
Show me the code
How to escape Kubernetes? 😱
Show me the code
Control Plane ■ API server ■ etcd ■ kube-controller-manager ■ kube-scheduler Data Plane ■ kubelet ■ kube-proxy https://kubernetes.io/docs/concepts/overview/components/
• Deployment • Service • ConfigMaps • Secrets • Pods https://kubernetes.io/docs/concepts/overview/components/
What next? https://kubernetes.io/docs/tutorials/kubernetes-basics https://github.com/kelseyhightower/kubernetes-the-hard-way www.testcontainers.org
Visit AtomicJar booth 25!
Are you a Java developer making the first steps with cloud based technologies? Is learning Kubernetes the hard way a bit too… hard?
Worry not! In this session, we’ll go over the fundamentals of k8s to make your journey into using it simpler and more enjoyable. In a true Java fashion we’ll start with a Factory… kidding! with a test-driven exploration of what k8s is, its concepts and capabilities and learn why it’s such a powerful tool.
We’ll write tests that spin real k8s clusters with Testcontainers, explore what happens inside, break the assumptions, and truly get that first hands-on experience that’ll make you both confident and a bit dangerous at working with this 10-letter staple of the clouds.
PS. there will be yaml, but as little as possible, pinky promise!
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