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DEV QAINT PRODBuild

What is the immutable pattern?

A pattern or strategy for managing services in which infrastructure is divided into “data” and “everything else”. “Everything else” components are replaced at every deployment, with changes made only by modifying a versioned definition, rather than being updated in-place.

Source – https://highops.com/insights/immutable-infrastructure-6-questions-6-experts/

Pets vs Cattle

Benefits

Simpler than config as code

Mimicking production is easy

Resilient with instant rollbacks

Reuse one pipeline across many apps

Bigger paradigm shift than config as code

Technology and tooling is new and evolving

Creating VMs from scratch is slower than patches

Hard to migrate complex monolithic apps

Challenges

Open cloud

Active OSS

Immutable pipeline

Why Azure Spinnaker?

Trigger Build

Orchestrate across stagesDev checks in

code Azure VM Scale Set

Trigger pipeline Promote to

Prod

Azure Spinnaker : Toolchain

Trigger Build

Orchestrate across stagesDev checks in

codeBuild and Bake

app into image Production

Trigger Immutable

pipeline Promote to

Prod

Reuse the same image across stages

Azure Spinnaker : Immutability

Trigger Build

Orchestrate across stagesDev checks in

codeBuild app Production

Trigger Immutable

pipeline Promote to

Prod

Reuse the same image across stages

Azure Spinnaker : Immutability

Packer

Bake app

into image

Real world cluster view

Azure Jenkins Integrations

Kubernetes

Azure Container Service (Deploy)

Azure VM (Agents)

Docker Registry

MICROSOFT CONFIDENTIAL

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