Random
The resource random.RandomId 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.RandomBytes 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
package generated_program;
import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.random.RandomId;
import com.pulumi.random.RandomIdArgs;
import com.pulumi.aws.ec2.Instance;
import com.pulumi.aws.ec2.InstanceArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
public class App {
public static void main(String[] args) {
Pulumi.run(App::stack);
}
public static void stack(Context ctx) {
var serverRandomId = new RandomId("serverRandomId", RandomIdArgs.builder()
.keepers(Map.of("ami_id", var_.ami_id()))
.byteLength(8)
.build());
var serverInstance = new Instance("serverInstance", InstanceArgs.builder()
.tags(Map.of("Name", serverRandomId.hex().applyValue(hex -> String.format("web-server %s", hex))))
.ami(serverRandomId.keepers().applyValue(keepers -> keepers.amiId()))
.build());
}
}Import
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
$ pulumi import random:index/randomId:RandomId server p-9hUgExample with prefix (prefix is separated by a ,)
$ pulumi import random:index/randomId:RandomId server my-prefix-,p-9hUg