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CreateService

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Creates a service. This action defines the configuration for the following entities:

• For public and private DNS namespaces, one of the following combinations of DNS records in Amazon Route 53:

  • A

  • AAAA

  • A and AAAA

  • SRV

  • CNAME

• Optionally, a health check

After you create the service, you can submit a RegisterInstance request, and AWS Cloud Map uses the values in the configuration to create the specified entities.

For the current quota on the number of instances that you can register using the same namespace and using the same service, see AWS Cloud Map quotas in the AWS Cloud Map Developer Guide.

Request Syntax

{
   "CreatorRequestId": "string",
   "Description": "string",
   "DnsConfig": { 
      "DnsRecords": [ 
         { 
            "TTL": number,
            "Type": "string"
         }
      ],
      "NamespaceId": "string",
      "RoutingPolicy": "string"
   },
   "HealthCheckConfig": { 
      "FailureThreshold": number,
      "ResourcePath": "string",
      "Type": "string"
   },
   "HealthCheckCustomConfig": { 
      "FailureThreshold": number
   },
   "Name": "string",
   "NamespaceId": "string",
   "Tags": [ 
      { 
         "Key": "string",
         "Value": "string"
      }
   ],
   "Type": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

CreatorRequestId

A unique string that identifies the request and that allows failed CreateService requests to be retried without the risk of running the operation twice. CreatorRequestId can be any unique string (for example, a date/timestamp).

Type: String

Length Constraints: Maximum length of 64.

Required: No

Description

A description for the service.

Type: String

Length Constraints: Maximum length of 1024.

Required: No

DnsConfig

A complex type that contains information about the Amazon Route 53 records that you want AWS Cloud Map to create when you register an instance.

Type: DnsConfig object

Required: No

HealthCheckConfig

Public DNS and HTTP namespaces only. A complex type that contains settings for an optional Route 53 health check. If you specify settings for a health check, AWS Cloud Map associates the health check with all the Route 53 DNS records that you specify in DnsConfig.

Important

If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.

For information about the charges for health checks, see AWS Cloud Map Pricing.

Type: HealthCheckConfig object

Required: No

HealthCheckCustomConfig

A complex type that contains information about an optional custom health check.

Important

If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.

You can't add, update, or delete a HealthCheckCustomConfig configuration from an existing service.

Type: HealthCheckCustomConfig object

Required: No

Name

The name that you want to assign to the service.

Note

Do not include sensitive information in the name if the namespace is discoverable by public DNS queries.

If you want AWS Cloud Map to create an SRV record when you register an instance and you're using a system that requires a specific SRV format, such as HAProxy, specify the following for Name:

• Start the name with an underscore (_), such as _exampleservice.

• End the name with ._protocol, such as ._tcp.

When you register an instance, AWS Cloud Map creates an SRV record and assigns a name to the record by concatenating the service name and the namespace name (for example,

_exampleservice._tcp.example.com).

Note

For services that are accessible by DNS queries, you can't create multiple services with names that differ only by case (such as EXAMPLE and example). Otherwise, these services have the same DNS name and can't be distinguished. However, if you use a namespace that's only accessible by API calls, then you can create services that with names that differ only by case.

Type: String

Pattern: ((?=^.{1,127}$)^([a-zA-Z0-9_][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9_]|[a-zA-Z0-9])(\.([a-zA-Z0-9_][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9_]|[a-zA-Z0-9]))*$)|(^\.$)

Required: Yes

NamespaceId

The ID of the namespace that you want to use to create the service. The namespace ID must be specified, but it can be specified either here or in the DnsConfig object.

Type: String

Length Constraints: Maximum length of 64.

Required: No

Tags

The tags to add to the service. Each tag consists of a key and an optional value that you define. Tags keys can be up to 128 characters in length, and tag values can be up to 256 characters in length.

Type: Array of Tag objects

Array Members: Minimum number of 0 items. Maximum number of 200 items.

Required: No

Type

If present, specifies that the service instances are only discoverable using the DiscoverInstances API operation. No DNS records is registered for the service instances. The only valid value is HTTP.

Type: String

Valid Values: HTTP

Required: No

Response Syntax

{
   "Service": { 
      "Arn": "string",
      "CreateDate": number,
      "CreatorRequestId": "string",
      "Description": "string",
      "DnsConfig": { 
         "DnsRecords": [ 
            { 
               "TTL": number,
               "Type": "string"
            }
         ],
         "NamespaceId": "string",
         "RoutingPolicy": "string"
      },
      "HealthCheckConfig": { 
         "FailureThreshold": number,
         "ResourcePath": "string",
         "Type": "string"
      },
      "HealthCheckCustomConfig": { 
         "FailureThreshold": number
      },
      "Id": "string",
      "InstanceCount": number,
      "Name": "string",
      "NamespaceId": "string",
      "Type": "string"
   }
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Service

A complex type that contains information about the new service.

Type: Service object

Errors

For information about the errors that are common to all actions, see Common Errors.

InvalidInput

One or more specified values aren't valid. For example, a required value might be missing, a numeric value might be outside the allowed range, or a string value might exceed length constraints.

HTTP Status Code: 400

NamespaceNotFound

No namespace exists with the specified ID.

HTTP Status Code: 400

ResourceLimitExceeded

The resource can't be created because you've reached the quota on the number of resources.

HTTP Status Code: 400

ServiceAlreadyExists

The service can't be created because a service with the same name already exists.

HTTP Status Code: 400

TooManyTagsException

The list of tags on the resource is over the quota. The maximum number of tags that can be applied to a resource is 50.

HTTP Status Code: 400

Examples

CreateService Example

The example creates a service with a Amazon Route 53 health check configured.

Sample Request

POST / HTTP/1.1
host:servicediscovery.us-west-2.amazonaws.com
x-amz-date:20181118T211706Z
authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20181118/us-west-2/servicediscovery/aws4_request,
               SignedHeaders=content-length;content-type;host;user-agent;x-amz-date;x-amz-target,
               Signature=[calculated-signature]
x-amz-target:Route53AutoNaming_v20170314.CreateService
content-type:application/x-amz-json-1.1
content-length:[number of characters in the JSON string]

{
    "CreatorRequestId": "example-creator-request-id-0004", 
    "NamespaceId": "ns-e4anhexample0004",
    "Name": "example-http-service",
    "HealthCheckConfig": {
        "Type": "HTTPS", 
        "ResourcePath": "/", 
        "FailureThreshold": 1
    }, 
    "Description": "Example.com AWS Cloud Map HTTP Service"
}

Sample Response

HTTP/1.1 200
Content-Length: [number of characters in the JSON string]
Content-Type: application/x-amz-json-1.1

{
    "Service": {
        "Arn": "arn:aws:servicediscovery:us-west-2:123456789012:service/srv-e4anhexample0004",
        "CreateDate": "20181118T211707Z",
        "CreatorRequestId": "example-creator-request-id-0004",
        "Description": "Example.com AWS Cloud Map HTTP Service",
        "HealthCheckConfig": {
            "FailureThreshold": 1,
            "ResourcePath": "/",
            "Type": "HTTPS"
        },
        "Id": "srv-e4anhexample0004",
        "Name": "example-http-service",
        "NamespaceId": "ns-e4anhexample0004"
    }
}

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following:

• AWS Command Line Interface

• AWS SDK for .NET

• AWS SDK for C++

• AWS SDK for Go v2

• AWS SDK for Java V2

• AWS SDK for JavaScript V3

• AWS SDK for PHP V3

• AWS SDK for Python

• AWS SDK for Ruby V3