Automates creation of detailed inventories from AWS resources

aws-auto-inventory --help
usage: aws-auto-inventory [-h] --name NAME

Automates creation of detailed inventories from AWS resources.

optional arguments:
  -h, --help            show this help message and exit
  --name NAME, -n NAME  inventory name

Problem

Projects usually have several resources and fetching all the information about these resources manually is a very time-consuming task.
This issue is intensified when the same project have multiple account and/or environments, e.g.: NonProd, QA and/or Prod.

Solution

Provide a simple way to fetch the required information and generate a spreadsheet.
The information can be filtered, e.g. filter results by tag:x, vpc, subnets, etc.
Additionally, inventories can be generated related to many services, which are collected and organized per sheet in the spreadsheet.

Development

# Linux/MacOS:
# clone the project and enter cloned directory
make init build
./dist/aws-auto-inventory --name <your-inventory-name>

You will need to create a config.yaml file in order to tell the tool how to generate your inventory, here are the default search paths for each platform:

• OS X: ~/.config/aws-auto-inventory/config.yaml or ~/Library/Application Support/aws-auto-inventory/config.yaml
• Other Unix: $XDG_CONFIG_HOME/aws-auto-inventory/config.yaml or ~/.config/aws-auto-inventory/config.yaml
• Windows: %APPDATA%\aws-auto-inventory\config.yaml where the APPDATA environment variable falls back to %HOME%\AppData\Roaming\config.yaml if undefined

You can use the config-sample as an example. A snippet can be found below:

inventories:
  - name: your-inventory-name
    aws:
      profile: your-aws-profile
      region:
        - us-east-1
    excel:
      transpose: true
    sheets:
      - name: EC2 # sheet name on Excel
        service: ec2 # the boto3 client of an AWS service
        function: describe_instances # the client method of the service defined above
        result_key: Reservations # [optional]: The first key of the response dict
      - name: EBS
        service: ec2
        function: describe_volumes
        result_key: Volumes

If you are interested in building an inventory for multiple AWS Accounts
(within your AWS organization) with the same sheets, you can use the
config-sample-for-organization for simplicity.
Code snippet:

Sheets: &sheets
  - name: CloudFrontDistros
    service: cloudfront
    function: list_distributions
    result_key: DistributionList
  - name: S3Buckets
    service: s3
    function: list_buckets
    result_key: Buckets

inventories:
  - name: your-org-master
    aws:
      profile: your-org
      region:
        - us-east-1
    excel:
      transpose: true
    sheets: *sheets

  - name: your-org-account1
    aws:
      profile: your-org-account1
      region:
        - us-east-1
    excel:
      transpose: true
    sheets: *sheets

  - name: your-org-account2
    aws:
      profile: your-org-account2
      region:
        - us-east-1
    excel:
      transpose: true
    sheets: *sheets

Then you need to run the auto-inventory script multiple times for your accounts as follows:

./dist/aws-auto-inventory --name your-org-master
./dist/aws-auto-inventory --name your-org-account1
./dist/aws-auto-inventory --name your-org-account1

Now, download the binary according to your operating system and platform and execute it, informing which inventory you want to generate.
The tool will create a folder aws-auto-inventory-report, in the current path, with the inventory report inside.

AWS-Auto-Inventory uses boto3.
You can use any service that contains any list or describe method to fetch information about your resources.

Parameters

You can use boto3 parameters to narrow down your search results.

Filter by tag:Name

sheets:
  - name: VPC
    service: ec2
    function: describe_vpcs
    result_key: Vpcs
    parameters:
      Filters:
        - Name: tag:Name
          Values:
            - my-vpc

Filter by vpc-id

sheets:
  - name: Subnets
    service: ec2
    function: describe_subnets
    result_key: Subnets
    parameters:
      Filters:
        - Name: vpc-id
          Values:
            - vpc-xxx

Find a particular RDS instance

sheets:
  - name: RDS
    service: rds
    function: describe_db_instances
    result_key: DBInstances
    parameters:
      DBInstanceIdentifier: the-name-of-my-rds-instance

Find EC2 instances by a particular tag

sheets:
  - name: EC2
    service: ec2
    function: describe_instances
    result_key: Reservations
    parameters:
      Filters:
        - Name: tag:ApplicationName
          Values:
            - my-application

Find a particular IAM Role

sheets:
  - name: IAM.Role
    service: iam
    function: get_role
    result_key: Role
    parameters:
      RoleName: my-role

• clencli - Cloud Engineer CLI
• boto3 - Boto3