Software Quality Days 2023 - Common Cloud Migration Pain Points and how to overcome them - based on practical Experience

here are different obstacles and challenges which you’re facing when starting almost from scratch with the cloud migration of your application. They are related to architectural aspects: what about the structure, what about the components, which have to be provisioned and hosted in the cloud? Which services of the cloud provider should be used: e.g.: Serverless services or a Kubernetes service?

They are related to technical issues - probably common mistakes: inappropriate deployment rules of workloads, scheduling problems of Kubernetes pods...

They can be referred to financial aspects: what costs arise by hosting the application in the cloud? How can they get monitored, respectivelly estimated?

We'd like to reveal our approaches to overcome those issues, based on practical experience.

Transcript

1. Public
   Common Cloud Migration Pain
   Points and how to overcome them
   based on practical experience
   Patrick Koch
   

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2. Public
   Introduction
   

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   What happened before the cloud?
   Once upon a time ... and it‘s still
   1
   AVL and the legacy software application
   2
   Introduction
   Today’s Agenda
   3
   Omg, what do we need to do?
   Why do we need to migrate to
   the cloud?
   Conclusion
   5
   The pain points
   Of course, we didn‘t avoid making
   mistakes ;)
   4
   Q&A
   6
   

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   AVL List GmbH
   Founded 1948
   More than 11,000 worldwide
   4,000 in Graz (headquarters)
   45 affiliates worldwide
   Export quota of 97%
   AVL List GmbH (“AVL”) is the world’s largest independent company for development,
   simulation and testing in the automotive industry, and in other sectors. Drawing on its
   pioneering spirit, the company provides concepts, solutions and methodologies to shape future
   mobility trends.”
   

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   Evolved to
   platform product
   Container,
   K8s
   Automation
   Framework
   Web
   components
   Started >
   25 years
   ago
   Python support
   REST interface
   2014
   New Generation
   (unmanaged legacy (C++) and
   managed (C#) code).
   Windows®
   application
   (component & full integration in
   internal products)
   2018
   ~ 8200 files
   ~ 2,9 Mio LOC
   Linux components
   (data, Python)
   2022 ...
   “A legacy system is outdated computing
   software and/or hardware that is still in use. ”
   ~ 800 customers
   ~ 23000 users
   The application to migrate in the cloud: AVL CONCERTO
   

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   Once upon a time ...
   What happened before
   the cloud?
   

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   Data Processing with the Desktop Application
   

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    Why do we need to migrate to the cloud…
    

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    An evolution happens – why even more automation, and more data?
    2021 ..
    Huge testbed for single unit under test (UUT)
    1 Operator per testbed
    Very high costs
    Exchanging of unit is labour-intesive
    One testing unit for multiple UUTs (Battery Cells)
    1 Operator for whole lab
    Costs per UUT are much lower
    UUT exchange works automated
    2021 ..
    

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    The Pain Points
    

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    Cloud Migration Strategy
    Pain Point 1
    

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    Cloud Migration Strategy
    Decide for a strategy before starting the
    implementation
    Lift & Shift (Rehost)
    Whole application is taken
    and pushed into container
    not possible / would
    cause to much costs
    Refactoring
    Rebuild
    

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    Pain Point 2
    Starting with a too complex
    implementation
    

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    Lift and shift to container using Azure Kubernetes Service
    Source: https://docs.microsoft.com/de-de/azure/architecture/solution-ideas/articles/migrate-existing-applications-with-aks
    “Easily migrate existing application to container(s) and run within the Azure managed Kubernetes service (AKS)”
    

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    The goal of the first implementation
    Azure Container
    Registry
    Azure Kubernetes
    Service
    Azure Virtual Machine
    Azure File Share
    Container
    1
    2
    3
    4
    

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    The faults
    1. ACR not properly attached with AKS
    2. Missing statements in Workload
    3. Wrong Firewall Settings
    

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    The faults
    1. ACR not properly attached with AKS
    2. Missing statements in Workload
    3. Wrong Firewall Settings
    nodeSelector:
    kubernetes.io/os: windows
    tolerations:
    - key: "kubernetes.io/os"
    operator: "Equal"
    value: "windows"
    effect: "NoSchedule"
    restartPolicy: Never
    backoffLimit: 4
    

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    The faults
    1. ACR not properly attached with AKS
    2. Missing statements in Workload
    3. Wrong Firewall Settings
    

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    Start lightweight: use e.g. a Serverless Service
    Azure Container Instance
    

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    Pain Point 3
    Manual Provisioning
    

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    Manual Provisioning of the resources
    e.g.: Creating a Kubernetes Cluster in Azure
    Can you
    reproduce your
    environment
    after the
    destruction?
    

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    Use Infrastructure as Code Approach
    Terraform
    Configuration File
    Azure Kubernetes
    Service
    

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    Pain Point 4
    Costs
    

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    Estimate the costs using tools
    

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    Automated Resource Provisioning in Azure with ADO
    Pipelines and Terraform
    Terraform Configurations Azure
    Azure DevOps Pipeline
    

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    Data Processing using an automated way in Azure
    

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    Conclusion
    Decide for a Cloud
    Migration Strategy
    Avoid to start with a
    too complex
    implementation – start
    lightweight
    Don‘t do manual
    provisioning – use
    Infrastructure as Code
    approach
    Be aware of the costs,
    monitor them
    

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31. Public
    Thank you!
    

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    Picture Sources
    https://icons8.de/icons/set/job
    https://icons8.de/icons/set/home-town
    https://icons8.de/icons/set/contact
    https://icons8.de/icons/set/twitter
    https://icons8.de/icons/set/linkedin
    https://icons8.de/icons/set/blog
    https://www.genardmethod.com/blog/
    your-speechs-introduction-how-to-
    make-it-powerful
    https://www.software-quality-
    days.com/
    https://www.avl.com
    Slide 1 Slide 3 Slide 4
    https://www.avl.com
    Slide 5
    

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    https://pixabay.com/de/photos/geb%C
    3%A4ude-kran-baustelle-
    ger%C3%BCstbau-1804030/
    https://pixabay.com/photos/car-
    citroen-france-vintage-vehicle-
    2184905/
    Windows:
    https://commons.wikimedia.org/wiki/File:Windows_
    Logo_(1992-2001).svg
    PCs: https://www.impulse.de/wp-
    content/uploads/2015/10/gebrauchte-
    hardware_fotolia620-620x340.jpg
    Python: https://www.python.org/
    Linux:
    https://upload.wikimedia.org/wikipedia/commons/d
    /dd/Linux_logo.jpg
    Slide 6
    Slide 7 Slide 10
    Picture Sources
    www.avl.com
    Slide 8
    Engine Test Bed: avl.com
    Battery Cell: https://www.avl.com/en/testing-
    solutions/e-mobility-testing/battery-testing/avl-
    battery-cell-ts
    Slide 11
    

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    Picture Sources
    https://learn.microsoft.com/de-
    de/azure/cloud-adoption-
    framework/migrate/
    https://www.pexels.com/photo/man-
    jumping-on-intermodal-container-
    379964/
    https://pixabay.com/de/photos/kaktee
    n-garten-mallorca-2462159/
    Slide 12 Slide 14 Slide 16
    

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    Picture Sources
    AKS Icon:
    https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    Azure Container Instance Icon:
    https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    Screenshot: Microsoft - Azure Portal
    https://portal.azure.com
    Azure VM Icon:
    https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    AKS Icon: https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    Azure Share Icon:
    https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    ACR Icon: https://learn.microsoft.com/en-
    us/azure/architecture/icons/
    Container Icon:
    https://icons8.de/icons/set/container
    Screenshot: Microsoft - Azure Portal
    https://portal.azure.com
    Slide 17, 18, 19, 20
    Slide 21 Slide 24
    Screenhots:
    Microsoft - Azure Portal
    https://portal.azure.com
    Slide 23 and Slide 26
    Screenhot:
    https://azure.microsoft.com/en-
    us/pricing/calculator/
    Slide 27
    

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    Picture Sources
    Terraform Icon: https://registry.terraform.io/providers/hashicorp/tfe/latest
    Azure DevOps Icon: https://learn.microsoft.com/en-us/azure/architecture/icons/
    Azure Icon: https://de.m.wikipedia.org/wiki/Datei:Microsoft_Azure_Logo.svg
    Slide 28
    

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