Module Values_6.DescribeInstanceTopologyResultSource

Describes a tree-based hierarchy that represents the physical host placement of your EC2 instances within an Availability Zone or Local Zone. You can use this information to determine the relative proximity of your EC2 instances within the Amazon Web Services network to support your tightly coupled workloads. Instance topology is supported for specific instance types only. For more information, see Prerequisites for Amazon EC2 instance topology in the Amazon EC2 User Guide. The Amazon EC2 API follows an eventual consistency model due to the distributed nature of the system supporting it. As a result, when you call the DescribeInstanceTopology API command immediately after launching instances, the response might return a null value for capacityBlockId because the data might not have fully propagated across all subsystems. For more information, see Eventual consistency in the Amazon EC2 API in the Amazon EC2 Developer Guide. For more information, see Amazon EC2 topology in the Amazon EC2 User Guide.

Sourcetype nonrec t = {
  1. instances : Values_3.InstanceSet.t option;
    (*

    Information about the topology of each instance.

    *)
  2. nextToken : Values_0.String_.t option;
    (*

    The token to include in another request to get the next page of items. This value is null when there are no more items to return.

    *)
}
Sourcetype nonrec error = [
  1. | `Unknown_operation_error of string * string option
]
Sourceval make : ?instances:??? -> ?nextToken:??? -> unit -> t
Sourceval error_of_json : 'a -> Yojson.Safe.t -> [> `Unknown_operation_error of 'a * string option ]
Sourceval error_of_xml : 'a -> Awso.Xml.t -> [> `Unknown_operation_error of 'a * string option ]
Sourceval error_to_json : error -> Yojson.Safe.t
Sourceval to_value : t -> [> `Structure of (string * [> `List of [> `Structure of (string * [> `List of [> `String of Values_0.String_.t ] list | `String of Values_0.String_.t ]) list ] list | `String of Values_0.String_.t ]) list ]
Sourceval to_query : t -> Awso.Client.Query.t
Sourceval of_xml : Awso.Xml.t -> t
Sourceval of_string : string -> t
Sourceval of_json : Yojson.Safe.t -> t
Sourceval to_json : t -> Yojson.Safe.t