Containers and orchestration 101 - Docker, Kubernetes and Helm

If you read reports from organizations like the CNCF they will tell you that 90% of people are developing in containers, 69% are running them in production and 77% of those are using Kubernetes to manage them. However those surveys are biased towards a self-selecting group of container converts.

This session will cover container technology from the ground up. You will learn how to package and run applications using Docker, orchestrate those containers on clusters in the cloud using Kubernetes and perform reliable and reproducible deployments with Helm.

It will be aimed at those with all levels of container knowledge so whether you're at the early stages of thinking about using containers, or running them in production don't feel left behind with this fast paced technology.

Transcript

1. Containers and
   orchestration 101
   Docker, Kubernetes and Helm
   Jacob Tomlinson
   

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2. hello!
   I am Jacob Tomlinson
   2
   

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3. Industry use of container technologies
   3
   Image courtesy of the
   mid-2018 CNCF Survey.
   https://www.cncf.io/blog/2018/0
   8/29/cncf-survey-use-of-cloud-
   native-technologies-in-producti
   on-has-grown-over-200-percen
   t/
   

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4. Containers and orchestration 101
   Docker Kubernetes Helm
   4
   A tool for
   building
   containers
   A platform to
   run
   containers on
   A deployment
   toolkit for
   kubernetes
   

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5. Docker
   “Docker creates simple tooling and a universal packaging approach
   that bundles up all application dependencies inside a container.”
   

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6. Docker concepts
   We will cover
   ✘ Containers
   ✘ Images
   ✘ Registries
   6
   We won’t cover
   ✘ Services
   ✘ Swarms
   ✘ Stacks
   

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7. Kubernetes
   “Kubernetes is an open-source system for automating deployment,
   scaling, and management of containerized applications.”
   

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8. Kubernetes concepts
   We will cover
   ✘ Namespaces
   ✘ Pods
   ✘ Deployments
   ✘ Services
   ✘ Persistent Volumes
   ✘ Ingresses
   ✘ Config Maps
   8
   We won’t cover
   ✘ Secrets
   ✘ Replica Sets
   ✘ Daemon Sets
   ✘ Stateful Sets
   ✘ Jobs
   ✘ Roles
   ✘ Role Based
   Authentication Control
   

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9. Helm
   “Helm is the best way to find, share, and use software built for
   Kubernetes.”
   

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10. Helm concepts
    We will cover
    ✘ Charts
    ✘ Templates
    ✘ Values
    ✘ Notes
    ✘ Requirements
    10
    We won’t cover
    ✘ Tiller
    ✘ Helpers
    ✘ Repositories
    

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11. Walkthrough
    Let’s package and deploy an application from
    start to finish!
    https://github.com/jacobtomlinson/tech-exeter-conference-2018
    

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13. Tap Tap Adventure
    ✘ Open Source MMO-RPG
    ✘ Forked from Mozilla Browser Quest
    ✘ Written in NodeJS
    ✘ Uses websockets
    ✘ Backed by a MySQL database
    https://github.com/Tach-Yon/Tap-Tap-Adventur
    e
    13
    

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14. Building a docker image
    14
    $ docker build -t /:
    Building…
    $ docker push /:
    Uploading to registry…
    $ docker run [args…] /:
    Running container...
    

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15. Building a kubernetes cluster
    15
    Amazon Web Services
    $ eksctl create cluster --name=
    Creating cluster...
    Google Cloud
    $ gcloud container clusters create
    Creating cluster...
    Microsoft Azure
    $ az acs create --orchestrator-type kubernetes --resource-group --name --generate-ssh-keys
    Creating cluster...
    

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16. Building the helm chart and
    deploying to kubernetes
    16
    $ helm create
    Creating skeleton chart...
    $
    Configure your chart...
    $ helm install --namespace --name -f
    Deploying to kubernetes...
    

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17. Updating the application
    17
    $ helm upgrade -f
    Updating your existing chart...
    

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18. Thanks for listening!
    Any questions?
    @_jacobtomlinson
    jacob@tom.linson.uk
    18
    

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