random_id (Resource)

The resource random_id generates random numbers that are intended to be used as unique identifiers for other resources. If the output is considered sensitive, and should not be displayed in the CLI, use random_bytes instead.

This resource does use a cryptographic random number generator in order to minimize the chance of collisions, making the results of this resource when a 16-byte identifier is requested of equivalent uniqueness to a type-4 UUID.

This resource can be used in conjunction with resources that have the create_before_destroy lifecycle flag set to avoid conflicts with unique names during the brief period where both the old and new resources exist concurrently.

Example Usage

// DO NOT EDIT. Code generated by 'cdktf convert' - Please report bugs at https://cdk.tf/bug
import { Construct } from "constructs";
import { Fn, Token, TerraformStack } from "cdktf";
/*
 * Provider bindings are generated by running `cdktf get`.
 * See https://cdk.tf/provider-generation for more details.
 */
import { Instance } from "./.gen/providers/aws/instance";
import { Id } from "./.gen/providers/random/id";
class MyConvertedCode extends TerraformStack {
  constructor(scope: Construct, name: string) {
    super(scope, name);
    const server = new Id(this, "server", {
      byteLength: 8,
      keepers: {
        ami_id: amiId.stringValue,
      },
    });
    const awsInstanceServer = new Instance(this, "server_1", {
      ami: Token.asString(Fn.lookupNested(server, ["keepers", "ami_id"])),
      tags: {
        Name: "web-server ${" + server.hex + "}",
      },
    });
    /*This allows the Terraform resource name to match the original name. You can remove the call if you don't need them to match.*/
    awsInstanceServer.overrideLogicalId("server");
  }
}

Schema

Required

Optional

Read-Only

Import

Import is supported using the following syntax:

# Random IDs can be imported using the b64_url with an optional prefix. This
# can be used to replace a config value with a value interpolated from the
# random provider without experiencing diffs.

# Example with no prefix:
terraform import random_id.server p-9hUg

# Example with prefix (prefix is separated by a ,):
$ terraform import random_id.server my-prefix-,p-9hUg