In a time where container image building tools outnumber application frameworks, and deployment descriptors are lengthier than a small app, "deployment" is the stage where developer fun goes to die. In a less dramatic tone: The options and complexity of containerizing and deploying an application is, to say the least, a distraction for most developers. But it doesn't have to be. Quarkus provides extensions that help developers eliminate those distractions by making smart choices for them and by integrating with the rest of the Quarkus ecosystem. This demonstration will show that in Quarkusland, Kubernetes is not a killjoy but part of the fun, by providing a concise experience as you mix and match support for various platforms (vanilla Kubernetes & OpenShift) with image building solutions (Docker, Jib & S2i).

1. Quarkus
From developer joy to Kubernetes nirvana!
Ioannis Canellos

2. Red Hat
● Member at the ASF
● Red Hatter since 2012
● Creator
○ Fabric8 Kubernetes ecosystem
○ Spring Cloud Kubernetes
○ Dekorate
○ Quarkus Kubernetes
about me
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3. Red Hat
agenda
● What makes Quarkus fun?
● The road to Kubernetes …
● Demo
○ From code to cluster …
■ Container Image extensions
■ Kubernetes extension
● Manifest customization
● Deployment
● Platforms
○ Openshift
○ Knative
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4. Red Hat
● My take …
○ A concise bundle of best of breed frameworks and APIs
■ Everything fits together perfectly
■ Wiring frameworks and API is not a developer concern
○ Developers experience
■ Continuous feedback loop
● Essential for learning
● Increased productivity
“The Kuberentes Extension for Quarkus aspires to capture these elements in the Kubernetes
users experience…”
What makes Quarkus fun?
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5. Red Hat
Note to self:
“You are going to need an app anyway, better create it now …”
demo
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6. Red Hat
The road to Kubernetes ...
● Create a container image
● Push the image to a registry
● Create deployment manifests
● Apply manifests to the cluster
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7. Red Hat
Quarkus container image extensions
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8. Red Hat
● Add quarkus-container-image-docker
● Build
● Customize
○ Registry & credentials
● Push
● Replace with quarkus-container-image-jib
● Push
● Show dockerhub page
demo
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9. Red Hat
Kubernetes extension
● Generates Kubernetes manifests
○ Openshift
○ Knative
● Trigger container image builds
● Trigger deployment
● Easy customization via application.properties
● Deep integration with Quarkus
○ Health checks
○ Metrics
○ Kubernetes Client
○ Jax-RS
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10. Red Hat
demo
● Add Kubernetes extension
● Generate manifests
● Customize
○ Labels &
○ Env & Env from Secret
● Quarkus Integration
○ Add quarkus-smallrye-health
○ Add quarkus-smallrye-metrics
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11. Red Hat
Developer tricks to Kubernetes
● Tools
○ Kind
○ MicroK8s
○ Minkube
■ Using internal docker environment
■ ImagePullPolicy
■ Accessing the Service
● NodePort
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“... quarkus-minikube to the rescue”

12. Red Hat
● DeploymentConfig support
○ Deployment Triggers
● S2i support
○ Resource generation
○ Binary builds
Openshift extension
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13. Red Hat
● Use quarkus-openshift
● Remove quarkus-container-image-jib
● Show generated manifests
● S2i support
○ Perform a build
○ Deploy
demo
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14. Red Hat
Knative
● Works on both Kubernetes & Openshift
● Supports container-image-extensions
○ Docker
○ Jib
○ S2i (not yet)
● Clusters local services
● Scale bounds
● Autoscaling
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15. Red Hat
demo
● Configure knative as deployment target
● Perform a deployment
● Show cluster local option
● Play with auto scaling configuration
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16. Red Hat
Native mode
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● Everything demonstrated is expected to also work in Native mode
● Prerequisites
○ JDK 11+
○ GraalVM
“Just add the -Pnative flag ...”

17. Red Hat
recap
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● Quarkus is awesome
● Interchangeable container image extensions
○ Docker
○ Jib
○ S2i
● Kubernetes manifest generation
○ Openshift
○ Knative
● Deep Quarkus integration
○ Health
○ Metrics

18. THANK YOU
linkedin.com/iocanel
youtube.com/user/iocanel
twitter.com/iocanel
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