AWS-SystemsManager-AutomationExecutionRole.yaml

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AWSTemplateFormatVersion: '2010-09-09'
Description: AWS CloudFormation template to configure a target account for a scheduled multi-account and multi-region Automation patching operation. | Automation Service
Parameters :
  ManagementAccountNumber :
    Type : 'String'
    Description: 'Account number for the central management account.'
Resources:
  AutomationExecutionServiceRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - ssm.amazonaws.com
            AWS: 
            - !Join [ '', ['arn:', !Ref 'AWS::Partition', ':iam::', !Ref 'ManagementAccountNumber', ':root'] ]
          Action: sts:AssumeRole
      Path: "/"
      RoleName: AWS-SystemsManager-AutomationExecutionRole
      Policies:
      - PolicyName: passRole
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - iam:PassRole
            Resource: 
            - !Join [ '', ['arn:', !Ref 'AWS::Partition', ':iam::', !Ref 'AWS::AccountId', ':role/AWS-SystemsManager-AutomationExecutionRole'] ]
      - PolicyName: getTagPermissions
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - tag:GetResources
            Resource: "*"
      - PolicyName: listResourceGroupResourcesPermissions
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - resource-groups:listGroupResources
            Resource: "*"
      - PolicyName: startAutomationAndCommandPermissions
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - ssm:StartAutomationExecution
            Resource:
            - arn:aws:ssm:*:*:automation-definition/Automation-RunPatchBaseline:*
          - Effect: Allow
            Action:
            - ssm:SendCommand
            Resource:
            - arn:aws:ssm:*::document/AWS-RunPatchBaseline
            - arn:aws:ec2:*:*:instance/*
            - arn:aws:ssm:*:*:managed-instance/*
      - PolicyName: describeEC2AndSSMPermissions
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
          - Effect: Allow
            Action:
            - ec2:DescribeInstanceStatus
            - ec2:DescribeTags
            Resource:
            - "*"
          - Effect: Allow
            Action:
            - ssm:DescribeInstanceInformation
            - ssm:GetAutomationExecution
            - ssm:GetParameters
            - ssm:ListCommands
            - ssm:ListCommandInvocations
            Resource:
            - "*"