AWS SDK Version 3 for .NET
API Reference

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Public DNS namespaces only. A complex type that contains settings for an optional health check. If you specify settings for a health check, Amazon Route 53 associates the health check with all the records that you specify in DnsConfig.

A and AAAA records

If DnsConfig includes configurations for both A and AAAA records, Route 53 creates a health check that uses the IPv4 address to check the health of the resource. If the endpoint that is specified by the IPv4 address is unhealthy, Route 53 considers both the A and AAAA records to be unhealthy.

CNAME records

You can't specify settings for HealthCheckConfig when the DNSConfig includes CNAME for the value of Type. If you do, the CreateService request will fail with an InvalidInput error.

Request interval

The health check uses 30 seconds as the request interval. This is the number of seconds between the time that each Route 53 health checker gets a response from your endpoint and the time that it sends the next health check request. A health checker in each data center around the world sends your endpoint a health check request every 30 seconds. On average, your endpoint receives a health check request about every two seconds. Health checkers in different data centers don't coordinate with one another, so you'll sometimes see several requests per second followed by a few seconds with no health checks at all.

Health checking regions

Health checkers perform checks from all Route 53 health-checking regions. For a list of the current regions, see Regions.

Alias records

When you register an instance, if you include the AWS_ALIAS_DNS_NAME attribute, Route 53 creates an alias record. Note the following:

For information about the charges for health checks, see Route 53 Pricing.

Inheritance Hierarchy

System.Object
  Amazon.ServiceDiscovery.Model.HealthCheckConfig

Namespace: Amazon.ServiceDiscovery.Model
Assembly: AWSSDK.ServiceDiscovery.dll
Version: 3.x.y.z

Syntax

C#
public class HealthCheckConfig

The HealthCheckConfig type exposes the following members

Constructors

NameDescription
Public Method HealthCheckConfig()

Properties

NameTypeDescription
Public Property FailureThreshold System.Int32

Gets and sets the property FailureThreshold.

The number of consecutive health checks that an endpoint must pass or fail for Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa. For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide.

Public Property ResourcePath System.String

Gets and sets the property ResourcePath.

The path that you want Route 53 to request when performing health checks. The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, such as the file /docs/route53-health-check.html. Route 53 automatically adds the DNS name for the service and a leading forward slash (/) character.

Public Property Type Amazon.ServiceDiscovery.HealthCheckType

Gets and sets the property Type.

The type of health check that you want to create, which indicates how Route 53 determines whether an endpoint is healthy.

You can't change the value of Type after you create a health check.

You can create the following types of health checks:

  • HTTP: Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.

  • HTTPS: Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.

    If you specify HTTPS for the value of Type, the endpoint must support TLS v1.0 or later.

  • TCP: Route 53 tries to establish a TCP connection.

For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide.

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms