AWS CloudFormation For Creating Zilla-SSO-Reader-Role

Template for Zilla-SSO-Reader-Role

Save the below template in a file with extension .yml . For example zilla-sso-reader-role-template.yml .

AWSTemplateFormatVersion: 2010-09-09
Description: 'Zilla SSO Reader Role to sync SSO users, groups and permission sets'
Parameters:
  ZillaSSOReaderRoleName:
    Type: String
    Description: 'Provide a role name (Example: Zilla-SSO-Reader-Role)'
    AllowedPattern: '[-_a-zA-Z0-9]*'
    Default: Zilla-SSO-Reader-Role
  ZillaExternalID:
    Type: String
    Description: 'Provide an ExternalID (Example: Xoih821ddwf)'
    MinLength: '1'
    AllowedPattern: '[a-zA-Z0-9\=\,\.\@\:\/\-_]*'
    Default: zillasecurity.com
    ConstraintDescription: >-
      ExternalID must contain alphanumeric characters and only these special
      characters are allowed =,.@:/-. 
  ZillaAccountId:
    Description: >-
      Zilla AWS account ID that is allowed to assume this IAM role. Avoid
      changing!
    Type: String
    Default: '087210011007'
Resources:
  ZillaIAMRole:
    Type: 'AWS::IAM::Role'
    DeletionPolicy: 'Retain'
    Properties:
      RoleName: !Ref ZillaSSOReaderRoleName
      Description: 'IAM Role to allow Zilla to read SSO Users, Groups and Permission Sets.'
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/AWSSSOReadOnly'
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              AWS: !Sub 
                - 'arn:aws:iam::${ZillaAccountId}:root'
                - ZillaAWSAccountId: !Ref ZillaAccountId
            Action:
              - 'sts:AssumeRole'
            Condition:
              StringEquals:
                'sts:ExternalId': !Ref ZillaExternalID
      Policies:
          - PolicyName: zilla-sso-reader-policy
            PolicyDocument:
              Version: '2012-10-17'
              Statement:
                - Effect: Allow
                  Resource: '*'
                  Action:
                    - identitystore:Describe*
                    - identitystore:List*
    Metadata:
      'AWS::CloudFormation::Designer':
        id: a1259fc6-a6fe-4e2d-af45-7299bdcf7bc8
Metadata:
  'AWS::CloudFormation::Interface':
    ParameterGroups:
      - Label:
          default: Zilla Account Information
        Parameters:
          - ZillaSSOReaderRoleName
          - ZillaExternalID
Outputs:
    ZillaSSOReaderRoleARN:
      Value: !GetAtt ZillaIAMRole.Arn
      Description: Zilla SSO Reader Role ARN

Create stack for Zilla-SSO-Reader-Role in Management Account

Go to Cloud formation stack and create stack
Select Template is ready. And upload the Zilla-SSO-Reader-Role template as in a yml file from local.
Give a name to the stack and add the parameter values.
ZillaSSOReaderRoleName should be Zilla-SSO-Reader-Role.
ZillaExternalId should be your company domain name. For example: If your company’s domain name is example.com, then enter the value as example.com .
ZillaAccountId should be 087210011007
Click on Next .
Click Next on Configuration stack options page.
Review the details and create the stack.
Check the status of the stack. Go to the Events tab. Wait for the Status to become CREATE_COMPLETE.