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NEED SOMETHING SIMPLER THAN NEED SOMETHING SIMPLER THAN KUBERNETES? KUBERNETES? I love it but … Martin Ahrer 1

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MARTIN AHRER MARTIN AHRER Founder and president of Working with Java since 1998 Working with Docker as of early beta releases (pre 1.0) Working in the DevOps space since 2017 Freelance so ware architect / clean-code mentor   Enterprise Java User Group Austria [email protected] @kodepreacher Martin Ahrer 2

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CONTENT CONTENT Complexity versus Simplicity Comparison to Kubernetes Workload deployment (Job, Group, Task, Service) Demo: Container workload (Spring Boot App) Demo: Native workload (Spring Boot App) Martin Ahrer 3

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COMPLEXITY VERSUS SIMPLICITY COMPLEXITY VERSUS SIMPLICITY Martin Ahrer 4 . 1

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Martin Ahrer 4 . 2

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Martin Ahrer 4 . 3

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NOMAD VERSUS KUBERNETES NOMAD VERSUS KUBERNETES Martin Ahrer 5 . 1

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COMPONENTS COMPONENTS Martin Ahrer 5 . 2

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SERVER NODE SERVER NODE Martin Ahrer 5 . 3

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CLIENT NODE CLIENT NODE Martin Ahrer 5 . 4

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DEPLOYMENT DEPLOYMENT Martin Ahrer 5 . 5

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DEPLOYMENT DEPLOYMENT Martin Ahrer 5 . 6

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DEPLOYMENT DEPLOYMENT nomad agent -server starts a server agent Martin Ahrer 5 . 6

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DEPLOYMENT DEPLOYMENT nomad agent -server starts a server agent nomad agent -client starts a client agent Martin Ahrer 5 . 6

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DEPLOYMENT DEPLOYMENT nomad agent -server starts a server agent nomad agent -client starts a client agent nomad agent -dev starts a agent in server and client role Martin Ahrer 5 . 6

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DEPLOYMENT DEPLOYMENT nomad agent -server starts a server agent nomad agent -client starts a client agent nomad agent -dev starts a agent in server and client role nomad binary also provides the CLI Martin Ahrer 5 . 6

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Martin Ahrer 5 . 7

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Kubernetes supports clusters up to 5,000 nodes and 300,000 total containers. Martin Ahrer 5 . 7

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Kubernetes supports clusters up to 5,000 nodes and 300,000 total containers. https://kubernetes.io/docs/setup/best- practices/cluster-large/ Martin Ahrer 5 . 7

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Kubernetes supports clusters up to 5,000 nodes and 300,000 total containers. Nomad can scale to cluster sizes exceeding 10,000 nodes. https://kubernetes.io/docs/setup/best- practices/cluster-large/ Martin Ahrer 5 . 7

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Kubernetes supports clusters up to 5,000 nodes and 300,000 total containers. Nomad can scale to cluster sizes exceeding 10,000 nodes. In 2020 HashiCorp Nomad scheduled 2,000,000 Docker containers on 6,100 hosts in 10 AWS regions in 22 minutes. https://kubernetes.io/docs/setup/best- practices/cluster-large/ Martin Ahrer 5 . 7

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THE 2 MILLION CONTAINER CHALLENGE THE 2 MILLION CONTAINER CHALLENGE Kubernetes supports clusters up to 5,000 nodes and 300,000 total containers. Nomad can scale to cluster sizes exceeding 10,000 nodes. In 2020 HashiCorp Nomad scheduled 2,000,000 Docker containers on 6,100 hosts in 10 AWS regions in 22 minutes. https://kubernetes.io/docs/setup/best- practices/cluster-large/ https://www.hashicorp.com/c2m Martin Ahrer 5 . 7

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DEMO: CONTAINER WORKLOAD DEMO: CONTAINER WORKLOAD Martin Ahrer 6 . 1

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Spring Boot 3, JDK 17 Executable Boot JAR packaged as Container Startup time ~ 7.5 sec https://github.com/MartinAhrer/continuousdelivery Martin Ahrer 6 . 2

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DEMO: NATIVE WORKLOAD DEMO: NATIVE WORKLOAD Martin Ahrer 7 . 1

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Spring Boot 3, JDK 17, GraalVM 22.3.r17 AOT compiled using GraalVM to native macOS binary Startup time ~ 0.4 sec https://github.com/MartinAhrer/continuousdelivery Martin Ahrer 7 . 2

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WHY WOULD YOU WANT TO USE NOMAD? WHY WOULD YOU WANT TO USE NOMAD? Martin Ahrer 8 . 1

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https://developer.hashicorp.com/nomad/docs/nomad-vs- kubernetes/supplement Martin Ahrer 8 . 2

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Nomad is a supplemental strategy to Kubernetes Martin Ahrer 8 . 3

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NOMAD ECOSYSTEM NOMAD ECOSYSTEM Just in case you are missing something Nomad pack is like helm chart Nomad levant templating engine (used by Nomad pack) Waypoint (Build and deployment management) Martin Ahrer 8 . 4

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RESOURCES RESOURCES https://speakerdeck.com/martinahrer https://github.com/martinahrer https://developer.hashicorp.com/nomad/docs/nomad-vs- kubernetes/supplement https://developer.hashicorp.com/nomad/docs/nomad-vs-kubernetes https://www.hashicorp.com/blog/a-kubernetes-user-s-guide-to-hashicorp- nomad https://developer.hashicorp.com/nomad/docs Martin Ahrer 8 . 5

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QUESTIONS QUESTIONS Martin Ahrer 9  Martin Ahrer  

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