Alias resource record sets only: Information about the CloudFront distribution,
ELB load balancer, Amazon S3 bucket, or Amazon Route 53 resource record set to which
you are routing traffic.
If you're creating resource record sets for a private hosted zone, note the following:
- You can create alias resource record sets only for Amazon Route 53 resource
record sets in the same private hosted zone. Creating alias resource record sets for
CloudFront distributions, ELB load balancers, and Amazon S3 buckets is not supported.
- You can't create alias resource record sets for failover, geolocation, or latency
resource record sets in a private hosted zone.
For more information and an example, see Example:
Creating Alias Resource Record Sets in the Amazon Route 53 API Reference.
Namespace: Amazon.Route53.Model
Assembly: AWSSDK.dll
Version: (assembly version)
public class AliasTarget : Object
The AliasTarget type exposes the following members
| Name | Description |
|
AliasTarget()
|
Empty constructor used to set properties independently even when a simple constructor is available
|
|
AliasTarget(string, string)
|
Instantiates AliasTarget with the parameterized properties
|
| Name | Type | Description |
|
DNSName
|
System.String |
Gets and sets the property DNSName.
Alias resource record sets only: The external DNS name associated with the
AWS Resource. The value that you specify depends on where you want to route queries:
- A CloudFront distribution: Specify the domain name that CloudFront
assigned when you created your distribution. Your CloudFront distribution must include
an alternate domain name that matches the name of the resource record set. For example,
if the name of the resource record set is
acme.example.com , your CloudFront
distribution must include acme.example.com as one of the alternate domain
names. For more information, see Using
Alternate Domain Names (CNAMEs) in the Amazon CloudFront Developer Guide. - An ELB load balancer: Specify the DNS name associated with the load balancer.
You can get the DNS name by using the AWS Management Console, the ELB API, or the
AWS CLI. Use the same method to get values for
HostedZoneId and DNSName .
If you get one value from the console and the other value from the API or the CLI,
creating the resource record set will fail. - An Elastic Beanstalk environment:
Specify the CNAME attribute for the environment. (The environment must have a regionalized
domain name.)
- An Amazon S3 bucket that is configured as a static website:
Specify the domain name of the Amazon S3 website endpoint in which you created the
bucket; for example,
s3-website-us-east-1.amazonaws.com . For more information
about valid values, see the table Amazon
Simple Storage Service (S3) Website Endpoints in the Amazon Web Services General
Reference. For more information about using Amazon S3 buckets for websites, see
Hosting
a Static Website on Amazon S3 in the Amazon Simple Storage Service Developer
Guide. - Another Amazon Route 53 resource record set: Specify the
value of the
Name element for a resource record set in the current hosted
zone.
For more information and an example, see Example:
Creating Alias Resource Record Sets in the Amazon Route 53 API Reference.
|
|
EvaluateTargetHealth
|
System.Boolean |
Gets and sets the property EvaluateTargetHealth.
Alias resource record sets only: If you set the value of EvaluateTargetHealth
to true for the resource record set or sets in an alias, weighted alias,
latency alias, or failover alias resource record set, and if you specify a value for
HealthCheckId for every resource record set that is referenced by these
alias resource record sets, the alias resource record sets inherit the health of the
referenced resource record sets.
In this configuration, when Amazon Route 53 receives a DNS query for an alias resource
record set:
- Amazon Route 53 looks at the resource record sets that are referenced by
the alias resource record sets to determine which health checks they're using.
- Amazon Route 53 checks the current status of each health check. (Amazon Route
53 periodically checks the health of the endpoint that is specified in a health check;
it doesn't perform the health check when the DNS query arrives.)
- Based on
the status of the health checks, Amazon Route 53 determines which resource record
sets are healthy. Unhealthy resource record sets are immediately removed from consideration.
In addition, if all of the resource record sets that are referenced by an alias resource
record set are unhealthy, that alias resource record set also is immediately removed
from consideration.
- Based on the configuration of the alias resource record
sets (weighted alias or latency alias, for example) and the configuration of the resource
record sets that they reference, Amazon Route 53 chooses a resource record set from
the healthy resource record sets, and responds to the query.
Note the following:
- You cannot set
EvaluateTargetHealth to true when the alias target
is a CloudFront distribution. - If the AWS resource that you specify in
AliasTarget
is a resource record set or a group of resource record sets (for example, a group
of weighted resource record sets), but it is not another alias resource record set,
we recommend that you associate a health check with all of the resource record sets
in the alias target. For more information, see What
Happens When You Omit Health Checks? in the Amazon Route 53 Developer Guide. - If you specify an ELB load balancer in
AliasTarget , Elastic Load
Balancing routes queries only to the healthy Amazon EC2 instances that are registered
with the load balancer. If no Amazon EC2 instances are healthy or if the load balancer
itself is unhealthy, and if EvaluateTargetHealth is true
for the corresponding alias resource record set, Amazon Route 53 routes queries to
other resources. - When you create a load balancer, you configure settings
for Elastic Load Balancing health checks; they're not Amazon Route 53 health checks,
but they perform a similar function. Do not create Amazon Route 53 health checks for
the Amazon EC2 instances that you register with an ELB load balancer. For more information,
see How
Health Checks Work in More Complex Amazon Route 53 Configurations in the Amazon
Route 53 Developer Guide.
We recommend that you set EvaluateTargetHealth to true only
when you have enough idle capacity to handle the failure of one or more endpoints.
For more information and examples, see Amazon
Route 53 Health Checks and DNS Failover in the Amazon Route 53 Developer Guide.
|
|
HostedZoneId
|
System.String |
Gets and sets the property HostedZoneId.
Alias resource record sets only: The value you use depends on where you want
to route queries:
- A CloudFront distribution: Specify
Z2FDTNDATAQYW2 . - An ELB load balancer: Specify the value of the hosted zone ID for the load balancer.
You can get the hosted zone ID by using the AWS Management Console, the ELB API, or
the AWS CLI. Use the same method to get values for
HostedZoneId and DNSName .
If you get one value from the console and the other value from the API or the CLI,
creating the resource record set will fail. - An Amazon S3 bucket that is
configured as a static website: Specify the hosted zone ID for the Amazon S3 website
endpoint in which you created the bucket. For more information about valid values,
see the table Amazon
Simple Storage Service (S3) Website Endpoints in the Amazon Web Services General
Reference.
- Another Amazon Route 53 resource record set in your hosted
zone: Specify the hosted zone ID of your hosted zone. (An alias resource record
set cannot reference a resource record set in a different hosted zone.)
For more information and an example, see Example:
Creating Alias Resource Record Sets in the Amazon Route 53 API Reference.
|
.NET Framework:
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps:
Supported in: Windows 8