Mutability, Declarability, and Disposability, oh my!
summary
Compares mutable (patch-and-tweak day two) versus immutable workflows that redeploy updated images instead of patching live servers, showing a three‑tier example moving from 1.0 to mixed 2.0/1.5 and how redeploy eliminates intricate live fixes. Surveys specific tools: Terraform: HCL, many providers, AWS CloudFormation (AWS-only), Azure ARM/Bicep, and config managers Chef, Puppet, Salt, plus Ansible (agentless via SSH/WinRM). Argues infrastructure as code plus declarative pipelines shortens lifecycle and simplifies testing.
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chapters (11)
- 0:00Introduction
- 1:15The Concept
- 2:55Whiteboarding
- 3:25Application Server Management
- 5:52Deploy
- 7:45Patching
- 16:07Declarative
- 18:27Infrastructure as Code
- 20:04Individual Tools
- 23:55Configuration Management
- 26:29Ansible
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