Day 52 - Capacity Provider Setup

Date: 2025-11-18 (Tuesday)
Status: “Planned”

Building a Capacity Provider

Step 1 for LMI: define the instance layer (capacity provider) with VPC, roles, and instance choices.

Required Inputs

  • Operator IAM role so Lambda can launch/manage instances
  • VPC config (subnets + SG) where LMI instances live

Instance Selection

  • Supported: latest C/M/R families (x86/AMD/Graviton), large and above
  • Override: allowed/excluded types; set architecture explicitly for ARM
  • EBS encryption: default service key or your KMS

Networking Notes

  • Spread subnets across 3 AZs for resilience
  • All egress/logs flow through instance ENI; no function-level VPC config
  • Close inbound SG rules; ensure path to dependencies/CloudWatch endpoints

Guardrails

  • Max vCPU cap to bound spend
  • Additional scaling knobs available per provider