There are more AWS SDK examples available in the [AWS Doc SDK Examples](https://github.com/awsdocs/aws-doc-sdk-examples) GitHub repo.

# Use `CreateTrail` with an AWS SDK or CLI
<a name="cloudtrail_example_cloudtrail_CreateTrail_section"></a>

The following code examples show how to use `CreateTrail`.

------
#### [ C\$1\$1 ]

**SDK for C\$1\$1**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/cloudtrail#code-examples). 

```
// Routine which creates an AWS CloudTrail trail.
/*!
  \param trailName: The name of the CloudTrail trail.
  \param bucketName: The Amazon S3 bucket designate for publishing logs.
  \param clientConfig: Aws client configuration.
  \return bool: Function succeeded.
*/
bool AwsDoc::CloudTrail::createTrail(const Aws::String trailName,
                                     const Aws::String bucketName,
                                     const Aws::Client::ClientConfiguration &clientConfig) {
    Aws::CloudTrail::CloudTrailClient trailClient(clientConfig);
    Aws::CloudTrail::Model::CreateTrailRequest request;
    request.SetName(trailName);
    request.SetS3BucketName(bucketName);

    Aws::CloudTrail::Model::CreateTrailOutcome outcome = trailClient.CreateTrail(
            request);
    if (outcome.IsSuccess()) {
        std::cout << "Successfully created trail " << trailName << std::endl;
    }
    else {
        std::cerr << "Failed to create trail " << trailName <<
                  ": " << outcome.GetError().GetMessage() << std::endl;
    }

    return outcome.IsSuccess();
}
```
+  For API details, see [CreateTrail](https://docs.aws.amazon.com/goto/SdkForCpp/cloudtrail-2013-11-01/CreateTrail) in *AWS SDK for C\$1\$1 API Reference*. 

------
#### [ CLI ]

**AWS CLI**  
**To create a trail**  
The following `create-trail` example creates a multi-region trail named `Trail1` and specifies an S3 bucket.  

```
aws cloudtrail create-trail \
    --name Trail1 \
    --s3-bucket-name amzn-s3-demo-bucket \
    --is-multi-region-trail
```
Output:  

```
{
    "IncludeGlobalServiceEvents": true,
    "Name": "Trail1",
    "TrailARN": "arn:aws:cloudtrail:us-west-2:123456789012:trail/Trail1",
    "LogFileValidationEnabled": false,
    "IsMultiRegionTrail": true,
    "S3BucketName": "amzn-s3-demo-bucket"
}
```
+  For API details, see [CreateTrail](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/cloudtrail/create-trail.html) in *AWS CLI Command Reference*. 

------
#### [ PowerShell ]

**Tools for PowerShell V4**  
**Example 1: Creates a trail that will use the bucket 'amzn-s3-demo-bucket' for log file storage.**  

```
New-CTTrail -Name "awscloudtrail-example" -S3BucketName "amzn-s3-demo-bucket"
```
**Example 2: Creates a trail that will use the bucket 'amzn-s3-demo-bucket' for log file storage. The S3 objects representing the logs will have a common key prefix of 'mylogs'. When new logs are delivered to the bucket a notification will be sent to the SNS topic 'mlog-deliverytopic'. This example using splatting to supply the parameter values to the cmdlet.**  

```
$params = @{
    Name="awscloudtrail-example"
    S3BucketName="amzn-s3-demo-bucket"
    S3KeyPrefix="mylogs"
    SnsTopicName="mlog-deliverytopic"
}      
New-CTTrail @params
```
+  For API details, see [CreateTrail](https://docs.aws.amazon.com/powershell/v4/reference) in *AWS Tools for PowerShell Cmdlet Reference (V4)*. 

**Tools for PowerShell V5**  
**Example 1: Creates a trail that will use the bucket 'amzn-s3-demo-bucket' for log file storage.**  

```
New-CTTrail -Name "awscloudtrail-example" -S3BucketName "amzn-s3-demo-bucket"
```
**Example 2: Creates a trail that will use the bucket 'amzn-s3-demo-bucket' for log file storage. The S3 objects representing the logs will have a common key prefix of 'mylogs'. When new logs are delivered to the bucket a notification will be sent to the SNS topic 'mlog-deliverytopic'. This example using splatting to supply the parameter values to the cmdlet.**  

```
$params = @{
    Name="awscloudtrail-example"
    S3BucketName="amzn-s3-demo-bucket"
    S3KeyPrefix="mylogs"
    SnsTopicName="mlog-deliverytopic"
}      
New-CTTrail @params
```
+  For API details, see [CreateTrail](https://docs.aws.amazon.com/powershell/v5/reference) in *AWS Tools for PowerShell Cmdlet Reference (V5)*. 

------
#### [ Ruby ]

**SDK for Ruby**  
 There's more on GitHub. Find the complete example and learn how to set up and run in the [AWS Code Examples Repository](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/ruby/example_code/cloudtrail#code-examples). 

```
require 'aws-sdk-cloudtrail' # v2: require 'aws-sdk'
require 'aws-sdk-s3'
require 'aws-sdk-sts'

def create_trail_example(s3_client, sts_client, cloudtrail_client, trail_name, bucket_name)
  resp = sts_client.get_caller_identity({})
  account_id = resp.account

  # Attach policy to an Amazon Simple Storage Service (S3) bucket.
  s3_client.create_bucket(bucket: bucket_name)
  begin
    policy = {
      'Version' => '2012-10-17',
      'Statement' => [
        {
          'Sid' => 'AWSCloudTrailAclCheck20150319',
          'Effect' => 'Allow',
          'Principal' => {
            'Service' => 'cloudtrail.amazonaws.com'
          },
          'Action' => 's3:GetBucketAcl',
          'Resource' => "arn:aws:s3:::#{bucket_name}"
        },
        {
          'Sid' => 'AWSCloudTrailWrite20150319',
          'Effect' => 'Allow',
          'Principal' => {
            'Service' => 'cloudtrail.amazonaws.com'
          },
          'Action' => 's3:PutObject',
          'Resource' => "arn:aws:s3:::#{bucket_name}/AWSLogs/#{account_id}/*",
          'Condition' => {
            'StringEquals' => {
              's3:x-amz-acl' => 'bucket-owner-full-control'
            }
          }
        }
      ]
    }.to_json

    s3_client.put_bucket_policy(
      bucket: bucket_name,
      policy: policy
    )
    puts "Successfully added policy to bucket #{bucket_name}"
  end

  begin
    cloudtrail_client.create_trail({
                                     name: trail_name, # required
                                     s3_bucket_name: bucket_name # required
                                   })

    puts "Successfully created trail: #{trail_name}."
  rescue StandardError => e
    puts "Got error trying to create trail #{trail_name}:\n #{e}"
    puts e
    exit 1
  end
```
+  For API details, see [CreateTrail](https://docs.aws.amazon.com/goto/SdkForRubyV3/cloudtrail-2013-11-01/CreateTrail) in *AWS SDK for Ruby API Reference*. 

------