class DatabaseInstance (construct)

Language	Type name
.NET	Amazon.CDK.AWS.DocDB.DatabaseInstance
Java	software.amazon.awscdk.services.docdb.DatabaseInstance
Python	aws_cdk.aws_docdb.DatabaseInstance
TypeScript (source)	@aws-cdk/aws-docdb » DatabaseInstance

Implements IConstruct, IConstruct, IDependable, IResource, IDatabaseInstance

A database instance.

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as docdb from '@aws-cdk/aws-docdb';
import * as ec2 from '@aws-cdk/aws-ec2';
import * as cdk from '@aws-cdk/core';

declare const databaseCluster: docdb.DatabaseCluster;
declare const instanceType: ec2.InstanceType;
const databaseInstance = new docdb.DatabaseInstance(this, 'MyDatabaseInstance', {
  cluster: databaseCluster,
  instanceType: instanceType,

  // the properties below are optional
  autoMinorVersionUpgrade: false,
  availabilityZone: 'availabilityZone',
  dbInstanceName: 'dbInstanceName',
  preferredMaintenanceWindow: 'preferredMaintenanceWindow',
  removalPolicy: cdk.RemovalPolicy.DESTROY,
});

Initializer

new DatabaseInstance(scope: Construct, id: string, props: DatabaseInstanceProps)

Parameters

• scope Construct
• id string
• props DatabaseInstanceProps

Construct Props

Name	Type	Description
cluster	IDatabaseCluster	The DocumentDB database cluster the instance should launch into.
instanceType	InstanceType	The name of the compute and memory capacity classes.
autoMinorVersionUpgrade?	boolean	Indicates that minor engine upgrades are applied automatically to the DB instance during the maintenance window.
availabilityZone?	string	The name of the Availability Zone where the DB instance will be located.
dbInstanceName?	string	A name for the DB instance.
preferredMaintenanceWindow?	string	The weekly time range (in UTC) during which system maintenance can occur.
removalPolicy?	RemovalPolicy	The CloudFormation policy to apply when the instance is removed from the stack or replaced during an update.

---

cluster

Type: IDatabaseCluster

The DocumentDB database cluster the instance should launch into.

---

instanceType

Type: InstanceType

The name of the compute and memory capacity classes.

---

autoMinorVersionUpgrade?

Type: boolean (optional, default: true)

Indicates that minor engine upgrades are applied automatically to the DB instance during the maintenance window.

---

availabilityZone?

Type: string (optional, default: no preference)

The name of the Availability Zone where the DB instance will be located.

---

dbInstanceName?

Type: string (optional, default: a CloudFormation generated name)

A name for the DB instance.

If you specify a name, AWS CloudFormation converts it to lowercase.

---

preferredMaintenanceWindow?

Type: string (optional, default: a 30-minute window selected at random from an 8-hour block of time for each AWS Region, occurring on a random day of the week. To see the time blocks available, see https://docs.aws.amazon.com/documentdb/latest/developerguide/db-instance-maintain.html#maintenance-window)

The weekly time range (in UTC) during which system maintenance can occur.

Format: ddd:hh24:mi-ddd:hh24:mi Constraint: Minimum 30-minute window

---

removalPolicy?

Type: RemovalPolicy (optional, default: RemovalPolicy.Retain)

The CloudFormation policy to apply when the instance is removed from the stack or replaced during an update.

Properties

Name	Type	Description
cluster	IDatabaseCluster	The instance's database cluster.
dbInstanceEndpointAddress	string	The instance endpoint address.
dbInstanceEndpointPort	string	The instance endpoint port.
env	ResourceEnvironment	The environment this resource belongs to.
instanceArn	string	The instance arn.
instanceEndpoint	Endpoint	The instance endpoint.
instanceIdentifier	string	The instance identifier.
node	ConstructNode	The construct tree node associated with this construct.
stack	Stack	The stack in which this resource is defined.

---

cluster

Type: IDatabaseCluster

The instance's database cluster.

---

dbInstanceEndpointAddress

Type: string

The instance endpoint address.

---

dbInstanceEndpointPort

Type: string

The instance endpoint port.

---

env

Type: ResourceEnvironment

The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.

---

instanceArn

Type: string

The instance arn.

---

instanceEndpoint

Type: Endpoint

The instance endpoint.

---

instanceIdentifier

Type: string

The instance identifier.

---

node

Type: ConstructNode

The construct tree node associated with this construct.

---

stack

Type: Stack

The stack in which this resource is defined.

Methods

Name	Description
applyRemovalPolicy(policy)	Apply the given removal policy to this resource.
toString()	Returns a string representation of this construct.
static fromDatabaseInstanceAttributes(scope, id, attrs)	Import an existing database instance.

---

applyRemovalPolicy(policy)

public applyRemovalPolicy(policy: RemovalPolicy): void

Parameters

• policy RemovalPolicy

Apply the given removal policy to this resource.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you've removed it from the CDK application or because you've made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

---

toString()

public toString(): string

Returns

• string

Returns a string representation of this construct.

---

static fromDatabaseInstanceAttributes(scope, id, attrs)

public static fromDatabaseInstanceAttributes(scope: Construct, id: string, attrs: DatabaseInstanceAttributes): IDatabaseInstance

Parameters

• scope Construct
• id string
• attrs DatabaseInstanceAttributes

Returns

• IDatabaseInstance

Import an existing database instance.