Configure AWS Permissions

Before you can configure Splunk Cloud or Splunk Enterprise to work with your AWS data, you must set up accounts in Amazon Web Services.

Create an IAM role and assign it to your AWS account

To configure AWS accounts and permissions, you must have administrator rights in the AWS Management Console. If you do not have administrator access, work with your AWS admin to set up the accounts with the required permissions.

• To let the Splunk Add-on for Amazon Web Services access the data in your AWS account, you assign an IAM role to one or more AWS accounts. You then grant those roles the permissions that are required by the AWS account.
• If you run this add-on on a Splunk platform instance in your own managed Amazon Elastic Compute Cloud (EC2), then assign that EC2 to a role and give that role the IAM permissions listed here.

Manage IAM policies

There are three ways to manage policies for your IAM roles:

• Use the AWS Policy Generator tool to collect all permissions into one centrally managed policy. You can apply the policy to the IAM group that is used by the user accounts or the EC2s that the Splunk Add-on for AWS uses to connect to your AWS environment.
• Create multiple different users, groups, and roles with permissions specific to the services from which you plan to collect data.
• Copy and paste the sample policies provided on this page and apply them to an IAM Group as custom inline policies. To further specify the resources to which the policy grants access, replace the wildcards with the exact Amazon Resource Names (ARNs) of the resources in your environment.

For more information about working with inline policies, see Managing IAM Policies in the AWS documentation.

Configure CloudWatch Logs (VPC Flow Logs) permissions

Required permissions for logs: DescribeLogGroups, DescribeLogStreams, GetLogEvents

Sample inline policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": [
        "logs:DescribeLogGroups",
        "logs:DescribeLogStreams",
        "logs:GetLogEvents"
      ],
      "Effect": "Allow",
      "Resource": "*"
    }
  ]
}   

You must also ensure that your role has a trust relationship that allows the flow logs service to assume the role. While viewing the IAM role, choose Edit Trust Relationship and replace the policy with this one:

Sample inline policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "vpc-flow-logs.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}