Random
The resource random.RandomId generates random numbers that are intended to be used as unique identifiers for other resources. 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