Get AWS Reserved Instance Coverage

This script summarises the current usage by instance type in each region and compares this against the active reserved instances in that region. This allows you to know whether you currently have coverage for your resource usage and where to reserve more instances if required.

Currently the script checks Elasticache, EC2 and RDS instances.

Usage

./getRICoverage.py

Sample Output

  Cache
 =======

    eu-west-2
   ===========
  cache.m4.xlarge  Usage:  2 Reserved:  2 : ✓

    eu-west-1
   ===========
  cache.m4.xlarge  Usage:  2 Reserved:  0 : ❌

 RDS
=====

    eu-west-2
   ===========
   db.m4.large  Usage:  4 Reserved:  4 : ✓
   db.r3.large  Usage:  1 Reserved:  1 : ✓
  db.r4.xlarge  Usage:  1 Reserved:  1 : ✓
  db.t2.medium  Usage:  2 Reserved:  0 : ❌
   db.t2.micro  Usage:  1 Reserved:  0 : ❌

 EC2
=====

    eu-west-2
   ===========
      m4.large  Usage: 18 Reserved: 30 : ✓
     m4.xlarge  Usage:  3 Reserved:  3 : ✓
     t2.medium  Usage:  4 Reserved:  4 : ✓
      t2.micro  Usage:  1 Reserved:  2 : ✓
      t2.small  Usage:  1 Reserved:  1 : ✓

Todo

• For RDS the AZ Type must match the RI purchased type itherwise it doesn't count as a match
• Add Redshift
• Add any other reserved instance types supported