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Containers Revealed - LAOUC Tour '23 - Mexico

Avatar for Seán Scott Seán Scott PRO
August 04, 2023
Technology
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Containers Revealed - LAOUC Tour '23 - Mexico

Avatar for Seán Scott

Seán Scott PRO

August 04, 2023

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Transcript

  1. Containers Revealed: Easy as Tic-Tac-Toe @ViscosityNA www.viscosityna.com Latin America Community

    Tour '23 - Mexico August 4, 2023 Sean Scott Oracle ACE Director DoK Community Ambassador Managing Principal Consultant @oraclesean linkedin.com/in/soscott/ [email protected]

  2. DATABASE RELIABILITY ENGINEERING ⁘ DEVOPS & AUTOMATION 
 HIGH AVAILABILITY

    ⁘ BUSINESS CONTINUITY ⁘ DISASTER RECOVERY 
 MODERNIZATION ⁘ OBSERVABILITY ⁘ ENGINEERED SYSTEMS AutoUpgrade ⁘ Zero Downtime Migrations ⁘ Patching Real Application Clusters ⁘ Data Guard ⁘ Sharding Docker/Containers ⁘ Terraform ⁘ Ansible Exadata ⁘ Oracle Database Appliance AHF ⁘ TFA ⁘ GIMR ⁘ CHA @ViscosityNA www.viscosityna.com Sean Scott Oracle ACE Director DoK Community Ambassador Managing Principal Consultant @oraclesean linkedin.com/in/soscott/ [email protected]
  3. None

  4. @ViscosityNA www.viscosityna.com Oracle on Docker Running Oracle Databases in Linux

    Containers Download a free sample chapter: 
 https:/ /oraclesean.com 20% Discount Code: OracleDocker https:/ /link.springer.com

  5. @ViscosityNA www.viscosityna.com vo • cab • u • lar •

    y

  6. @ViscosityNA www.viscosityna.com Stateful Stateless Persistent Immutable Ephemeral Cloud Native Context

    
 Builds Layers Images Services Dockerfile Containers Union Filesystems

  7. @ViscosityNA www.viscosityna.com What Are Containers?

  8. @ViscosityNA www.viscosityna.com Three full operating systems Three application/executable directories

  9. @ViscosityNA www.viscosityna.com Three full operating systems Three application/executable directories

  10. @ViscosityNA www.viscosityna.com www.viscosityna.com @ViscosityNA 13 Oracle Databases on a Laptop

    2018 MacBook Pro 15", 2.2GHz 6-core Intel Core i7, 16GB, 1TB SSD

  11. Containers are like lightweight Virtual Machines, right?

  12. None

  13. @ViscosityNA www.viscosityna.com Virtual Machines: Bootable OS, often heavy A 100-page

    book of games & puzzles Containers: Support one application or service A sheet of paper with a Tic-Tac-Toe grid
  14. None
  15. None

  16. @ViscosityNA www.viscosityna.com Games have structured playing surfaces and rules.

  17. @ViscosityNA www.viscosityna.com Services deliver games to players.

  18. @ViscosityNA www.viscosityna.com Images include the game rules and playing surface.

  19. @ViscosityNA www.viscosityna.com Images are a minimal filesystem & metadata needed

    to run a service.

  20. @ViscosityNA www.viscosityna.com Running an image starts a Container.

  21. @ViscosityNA www.viscosityna.com A container is: A process on a host,

    and; A Union Filesystem.

  22. @ViscosityNA www.viscosityna.com Container processes are isolated.

  23. @ViscosityNA www.viscosityna.com A Union Filesystem has three layers: A Merge

    or Union Layer. An Upper Layer. A Lower Layer.

  24. @ViscosityNA www.viscosityna.com A Union Filesystem has three layers: A Merge

    or Union Layer: The game. An Upper Layer: The container. A Lower Layer: The image.

  25. @ViscosityNA www.viscosityna.com

  26. @ViscosityNA www.viscosityna.com The Upper (merge) layer isn't "real."

  27. @ViscosityNA www.viscosityna.com The Upper (merge) layer isn't "real." It's a

    perceived (calculated) union of: • The game board & rules • Game play

  28. @ViscosityNA www.viscosityna.com Containers persist state (moves) in the run-time layer

    of its Union Filesystem. Containers are stateful.

  29. @ViscosityNA www.viscosityna.com Deleting a container removes its Union Filesystem (and

    its run-time layer). Containers are Ephemeral

  30. @ViscosityNA www.viscosityna.com Images are immutable and never change.

  31. @ViscosityNA www.viscosityna.com Stalemate!

  32. @ViscosityNA www.viscosityna.com Shift the Image Right Moves fall off the

    game board: Changing an image changes the game!

  33. @ViscosityNA www.viscosityna.com Images are immutable and can't persist state information.

    They are stateless.

  34. @ViscosityNA www.viscosityna.com Images = Static Containers = Living

  35. @ViscosityNA www.viscosityna.com Containers are Magic!

  36. @ViscosityNA www.viscosityna.com How much space do three containers use? 500MB


    + 500MB 
 + 500MB 500MB 500MB
 + 500MB 
 + 500MB 1,500MB 500MB 500MB 500MB +

  37. @ViscosityNA www.viscosityna.com Multiple identical containers will share an image.

  38. @ViscosityNA www.viscosityna.com Build & Bake Images

  39. @ViscosityNA www.viscosityna.com A Dockerfile is a recipe for building images.

  40. @ViscosityNA www.viscosityna.com Paper Tic-Tac-Toe Grid

  41. @ViscosityNA www.viscosityna.com Image layers are modular and reusable. Layers can

    be cached and reused among multiple images.

  42. @ViscosityNA www.viscosityna.com Paper Game of Sums 3x3 Sudoku Tic-Tac-Toe Grid

  43. @ViscosityNA www.viscosityna.com Base Linux OS TensorFlow Flask Python

  44. @ViscosityNA www.viscosityna.com Context is a pantry of image ingredients.

  45. @ViscosityNA www.viscosityna.com Ignore files limit and control the build context.

  46. @ViscosityNA www.viscosityna.com Contact Me [email protected] https://linktr.ee/oraclesean