Developer Experience on Kubernetes

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Thomas Vitale Platform & DevEx, Copenhagen September 05, 2024 Developer Experience On Kubernetes @vitalethomas

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Systematic • Software Engineer • CNCF Ambassador, Oracle ACE Pro, Testcontainers Community Champion, KCD Organiser • Author of “Cloud Native Spring in Action” (Manning). • OSS contributor (Java, Spring, Cloud Native Technologies) Thomas Vitale thomasvitale.com @vitalethomas

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Problem @vitalethomas

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Value @vitalethomas

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Delivering Value From idea to production Developer Production Idea @vitalethomas ?

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Developer Experience @vitalethomas

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Developer Experience “…developer experience could be defined as a means for capturing how developers think and feel about their activities within their working environments, with the assumption that an improvement of the developer experience has positive impacts on characteristics such as sustained team and project performance.” (F. Fagerholm, J. Münch) Developer Experience: Concept and De fi nition (F. Fagerholm, J. Münch) @vitalethomas

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Developer Experience: Concept and De fi nition (F. Fagerholm, J. Münch) Developer Experience Conceptual Framework @vitalethomas

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Developer Experience Tools are not enough ORGANIZATION PROCESSES TECHNOLOGY CULTURE @vitalethomas

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Team Topologies Organisational design for software @vitalethomas

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Continuous Delivery Better software faster @vitalethomas

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Goals 2 Reduced cognitive load 3 Clear and safe path to production 1 Rapid and continuous feedback loop @vitalethomas

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Development Workflow @vitalethomas

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Cloud Native @vitalethomas

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@vitalethomas Runtime (Language) Application (Executable) Cloud Native Applications

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Containers @vitalethomas

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Moving to Containers @vitalethomas Runtime (Language) Application (Executable) Runtime (OCI) Application (Container)

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“Friends don’t let friends write Dockerfiles!” - Josh Long @vitalethomas

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Dockerfiles “Dockerfiles are easy to write, but the current development guidelines do not produce containers that are repeatable and hardened.” CNCF Software Supply Chain Security Paper https://github.com/cncf/tag-security/tree/main/supply-chain-security @vitalethomas

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Cloud Native Buildpacks @vitalethomas

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Image pack build Cloud Native Buildpacks From source code to container image @vitalethomas Cloud Native Buildpacks https://buildpacks.io

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Image pack build gradle bootBuildImage Cloud Native Buildpacks From source code to container image @vitalethomas Cloud Native Buildpacks https://buildpacks.io

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Eliminate sources of non-determinism Reproducible builds with Cloud Native Buildpacks Cloud Native Buildpacks https://buildpacks.io Image pack build Image pack build Time = = @vitalethomas

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Kubernetes @vitalethomas

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Moving to Kubernetes @vitalethomas Runtime (Language) Application (Executable) Runtime (OCI) Application (Container) Runtime (OCI) Middleware (Kubernetes) Application (Container)

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Working with Kubernetes Manifests for application deployment Deployment Deploy the application and con fi gure replication Service Expose the application from within the cluster @vitalethomas Ingress Expose the application from outside the cluster

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Knative @vitalethomas

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Knative Serverless experience on Kubernetes @vitalethomas

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Serverless Architectures Developers focus on code Focus on business logic Developer Platform Infrastructure Provisioning Workload Management Dynamic Scaling @vitalethomas

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Knative Serving Serverless Experience on Kubernetes Developer-friendly abstractions From image to URL Autoscaling Scaling to zero Progressive Rollouts Request-driven Event-driven Cloud agnostic @vitalethomas

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Tilt @vitalethomas

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Tilt Continuous development on Kubernetes @vitalethomas CODE BUILD RUN TEST Inner Development Loop

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Capabilities over responsibilities @vitalethomas

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Developer @vitalethomas

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Developer Platform @vitalethomas API

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Developer Platform @vitalethomas API

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Crossplane @vitalethomas

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Configuration: Workload API Crossplane Composition @vitalethomas

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Configuration: Implementation Crossplane Composition Workload API Serverless Deployment Service Binding Application Conventions @vitalethomas

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Delivering Value From code to production Developer Production Application Operator Security Expert Platform Engineer @vitalethomas

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Goals 2 Reduced cognitive load 3 Clear and safe path to production 1 Rapid and continuous feedback loop @vitalethomas

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Kubernetes for Local Development? @vitalethomas

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Local Development Workflow @vitalethomas

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Continuous Development Code, Run, Test, Debug Development Workflow gradle bootRun flask --debug run yarn dev Dev & Test Services @vitalethomas

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Backstage @vitalethomas

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backstage.io

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DevContainers @vitalethomas

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Development Containers Dev Environment in a Box @vitalethomas

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Development Containers Dev Environment in a Box @vitalethomas GitHub Codespaces VS Code IntelliJ Gateway DevPod

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Thomas Vitale @vitalethomas thomasvitale.com GitHub.com/ThomasVitale Developer Experience On Kubernetes