AWS CloudFormation CentOS 7 AMIs

AWS-CentOS-7-AMIs.md

• CentOS AMI mapping in JSON
• CentOS AMI mapping in YAML
• Code to produce the mapping

centos7_amis.json

{
  "Mappings": {
    "RegionMap": {
      "ap-northeast-1": {
        "CentOS7x8664EBSHVM": "ami-045f38c93733dd48d"
      },
      "ap-northeast-2": {
        "CentOS7x8664EBSHVM": "ami-06cf2a72dadf92410"
      },
      "ap-south-1": {
        "CentOS7x8664EBSHVM": "ami-02e60be79e78fef21"
      },
      "ap-southeast-1": {
        "CentOS7x8664EBSHVM": "ami-0b4dd9d65556cac22"
      },
      "ap-southeast-2": {
        "CentOS7x8664EBSHVM": "ami-08bd00d7713a39e7d"
      },
      "ca-central-1": {
        "CentOS7x8664EBSHVM": "ami-033e6106180a626d0"
      },
      "eu-central-1": {
        "CentOS7x8664EBSHVM": "ami-04cf43aca3e6f3de3"
      },
      "eu-north-1": {
        "CentOS7x8664EBSHVM": "ami-5ee66f20"
      },
      "eu-west-1": {
        "CentOS7x8664EBSHVM": "ami-0ff760d16d9497662"
      },
      "eu-west-2": {
        "CentOS7x8664EBSHVM": "ami-0eab3a90fc693af19"
      },
      "eu-west-3": {
        "CentOS7x8664EBSHVM": "ami-0e1ab783dc9489f34"
      },
      "sa-east-1": {
        "CentOS7x8664EBSHVM": "ami-0b8d86d4bf91850af"
      },
      "us-east-1": {
        "CentOS7x8664EBSHVM": "ami-02eac2c0129f6376b"
      },
      "us-east-2": {
        "CentOS7x8664EBSHVM": "ami-0f2b4fc905b0bd1f1"
      },
      "us-west-1": {
        "CentOS7x8664EBSHVM": "ami-074e2d6769f445be5"
      },
      "us-west-2": {
        "CentOS7x8664EBSHVM": "ami-01ed306a12b7d1c96"
      }
    }
  }
}

centos7_amis.yaml

Mappings:
  RegionMap:
    ap-northeast-1:
      CentOS7x8664EBSHVM: ami-045f38c93733dd48d
    ap-northeast-2:
      CentOS7x8664EBSHVM: ami-06cf2a72dadf92410
    ap-south-1:
      CentOS7x8664EBSHVM: ami-02e60be79e78fef21
    ap-southeast-1:
      CentOS7x8664EBSHVM: ami-0b4dd9d65556cac22
    ap-southeast-2:
      CentOS7x8664EBSHVM: ami-08bd00d7713a39e7d
    ca-central-1:
      CentOS7x8664EBSHVM: ami-033e6106180a626d0
    eu-central-1:
      CentOS7x8664EBSHVM: ami-04cf43aca3e6f3de3
    eu-north-1:
      CentOS7x8664EBSHVM: ami-5ee66f20
    eu-west-1:
      CentOS7x8664EBSHVM: ami-0ff760d16d9497662
    eu-west-2:
      CentOS7x8664EBSHVM: ami-0eab3a90fc693af19
    eu-west-3:
      CentOS7x8664EBSHVM: ami-0e1ab783dc9489f34
    sa-east-1:
      CentOS7x8664EBSHVM: ami-0b8d86d4bf91850af
    us-east-1:
      CentOS7x8664EBSHVM: ami-02eac2c0129f6376b
    us-east-2:
      CentOS7x8664EBSHVM: ami-0f2b4fc905b0bd1f1
    us-west-1:
      CentOS7x8664EBSHVM: ami-074e2d6769f445be5
    us-west-2:
      CentOS7x8664EBSHVM: ami-01ed306a12b7d1c96

create_centos7_cloudformation_ami_mapping.py

import boto3
import dateutil.parser
import json
import yaml

client = boto3.client('ec2')
response = client.describe_regions()
region_list = [x['RegionName'] for x in response['Regions']]

# https://wiki.centos.org/Cloud/AWS#head-224024c7b3b083bd574bec6861bcdfd3487a5418
CENTOSORG_CENTOS_7_PRODUCT_CODE = "aw0evgkw8e5c1q413zgy5pjce"
CENTOSORG_CENTOS_6_PRODUCT_CODE = "6x5jmcajty9edm3f211pqjfn2"

OUTPUT_SYNTAX = 'yaml'

amis = []

RegionMap = {}
for region in region_list:
    RegionMap[region] = {}

for region_name in region_list:
    client = boto3.client('ec2', region_name=region_name)
    response = client.describe_images(
        Owners=['aws-marketplace'],
        Filters=[
            {
                'Name': 'product-code',
                'Values': [
                    CENTOSORG_CENTOS_7_PRODUCT_CODE
                ]
            }
        ]
    )
    for image in response['Images']:
        image[u'Region'] = region_name
        amis.append(image)

for region in region_list:
    regional_ami_list = [x for x in amis if x['Region'] == region]
    if len(regional_ami_list) == 0:
        continue
    regional_ami_list.sort(
        reverse=True,
        key=lambda x: dateutil.parser.parse(x['CreationDate']))
    newest_ami = regional_ami_list[0]
    RegionMap[region]['CentOS7x8664EBSHVM'] = newest_ami[u'ImageId']

if OUTPUT_SYNTAX == 'json':
    print(json.dumps({"Mappings": {"RegionMap": RegionMap}},
                     sort_keys=True,
                     indent = 2,
                     separators = (',', ': ')))
elif OUTPUT_SYNTAX == 'yaml':
    print(yaml.safe_dump(
        {"Mappings": {"RegionMap": RegionMap}}, default_flow_style=False))