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Elastic Load Balancing API

by amazonaws.com

API keyHTTPSCloud Platforms
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Overview

<fullname>Elastic Load Balancing</fullname> <p>A load balancer distributes incoming traffic across targets, such as your EC2 instances. This enables you to increase the availability of your application. The load balancer also monitors the health of its registered targets and ensures that it routes traffic only to healthy targets. You configure your load balancer to accept incoming traffic by specifying one or more listeners, which are configured with a protocol and port number for connections from clients to the load balancer. You configure a target group with a protocol and port number for connections from the load balancer to the targets, and with health check settings to be used when checking the health status of the targets.</p> <p>Elastic Load Balancing supports the following types of load balancers: Application Load Balancers, Network Load Balancers, Gateway Load Balancers, and Classic Load Balancers. This reference covers the following load balancer types:</p> <ul> <li> <p>Application Load Balancer - Operates at the application layer (layer 7) and supports HTTP and HTTPS.</p> </li> <li> <p>Network Load Balancer - Operates at the transport layer (layer 4) and supports TCP, TLS, and UDP.</p> </li> <li> <p>Gateway Load Balancer - Operates at the network layer (layer 3).</p> </li> </ul> <p>For more information, see the <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/">Elastic Load Balancing User Guide</a>.</p> <p>All Elastic Load Balancing operations are idempotent, which means that they complete at most one time. If you repeat an operation, it succeeds.</p>

Elastic Load Balancing is a cloud platforms API from amazonaws.com. Requests are authenticated with an API key. It is served over HTTPS. Its OpenAPI description documents 108 endpoints.

At a glance

Authentication
API key
HTTPS
Yes
CORS
Unknown
Base URL
http://elasticloadbalancing.amazonaws.com
Version
2015-12-01
Endpoints
108
Spec updated
2020-03-29

Make a first request

Replace the placeholders; the documentation says exactly where credentials go.

cURL
curl -X GET "http://elasticloadbalancing.amazonaws.com/#Action=AddTags" \
  -H "Accept: application/json" \
  -H "X-API-Key: YOUR_API_KEY"
JavaScript
const response = await fetch("http://elasticloadbalancing.amazonaws.com/#Action=AddTags", {
  method: "GET",
  headers: {
    "Accept": "application/json",
    "X-API-Key": "YOUR_API_KEY",
  },
});
const data = await response.json();
console.log(data);
Python
import requests

response = requests.request(
    "GET",
    "http://elasticloadbalancing.amazonaws.com/#Action=AddTags",
    headers={
    "Accept": "application/json",
    "X-API-Key": "YOUR_API_KEY",
    },
    timeout=30,
)
print(response.json())

Endpoints

MethodPathWhat it does
GET/#Action=AddTags<p>Adds the specified tags to the specified load balancer. Each load balancer can have a maximum of 10 tags.</p> <p>Each tag consists of a key and an optional v
POST/#Action=AddTags<p>Adds the specified tags to the specified load balancer. Each load balancer can have a maximum of 10 tags.</p> <p>Each tag consists of a key and an optional v
GET/#Action=ApplySecurityGroupsToLoadBalancer<p>Associates one or more security groups with your load balancer in a virtual private cloud (VPC). The specified security groups override the previously associ
POST/#Action=ApplySecurityGroupsToLoadBalancer<p>Associates one or more security groups with your load balancer in a virtual private cloud (VPC). The specified security groups override the previously associ
GET/#Action=AttachLoadBalancerToSubnets<p>Adds one or more subnets to the set of configured subnets for the specified load balancer.</p> <p>The load balancer evenly distributes requests across all re
POST/#Action=AttachLoadBalancerToSubnets<p>Adds one or more subnets to the set of configured subnets for the specified load balancer.</p> <p>The load balancer evenly distributes requests across all re
GET/#Action=ConfigureHealthCheck<p>Specifies the health check settings to use when evaluating the health state of your EC2 instances.</p> <p>For more information, see <a href="https://docs.aws
POST/#Action=ConfigureHealthCheck<p>Specifies the health check settings to use when evaluating the health state of your EC2 instances.</p> <p>For more information, see <a href="https://docs.aws
GET/#Action=CreateAppCookieStickinessPolicy<p>Generates a stickiness policy with sticky session lifetimes that follow that of an application-generated cookie. This policy can be associated only with HTTP
POST/#Action=CreateAppCookieStickinessPolicy<p>Generates a stickiness policy with sticky session lifetimes that follow that of an application-generated cookie. This policy can be associated only with HTTP
GET/#Action=CreateLBCookieStickinessPolicy<p>Generates a stickiness policy with sticky session lifetimes controlled by the lifetime of the browser (user-agent) or a specified expiration period. This pol
POST/#Action=CreateLBCookieStickinessPolicy<p>Generates a stickiness policy with sticky session lifetimes controlled by the lifetime of the browser (user-agent) or a specified expiration period. This pol
GET/#Action=CreateLoadBalancer<p>Creates a Classic Load Balancer.</p> <p>You can add listeners, security groups, subnets, and tags when you create your load balancer, or you can add them lat
POST/#Action=CreateLoadBalancer<p>Creates a Classic Load Balancer.</p> <p>You can add listeners, security groups, subnets, and tags when you create your load balancer, or you can add them lat
GET/#Action=CreateLoadBalancerListeners<p>Creates one or more listeners for the specified load balancer. If a listener with the specified port does not already exist, it is created; otherwise, the pr
POST/#Action=CreateLoadBalancerListeners<p>Creates one or more listeners for the specified load balancer. If a listener with the specified port does not already exist, it is created; otherwise, the pr
GET/#Action=CreateLoadBalancerPolicy<p>Creates a policy with the specified attributes for the specified load balancer.</p> <p>Policies are settings that are saved for your load balancer and that c
POST/#Action=CreateLoadBalancerPolicy<p>Creates a policy with the specified attributes for the specified load balancer.</p> <p>Policies are settings that are saved for your load balancer and that c
GET/#Action=DeleteLoadBalancer<p>Deletes the specified load balancer.</p> <p>If you are attempting to recreate a load balancer, you must reconfigure all settings. The DNS name associated wit
POST/#Action=DeleteLoadBalancer<p>Deletes the specified load balancer.</p> <p>If you are attempting to recreate a load balancer, you must reconfigure all settings. The DNS name associated wit
GET/#Action=DeleteLoadBalancerListenersDeletes the specified listeners from the specified load balancer.
POST/#Action=DeleteLoadBalancerListenersDeletes the specified listeners from the specified load balancer.
GET/#Action=DeleteLoadBalancerPolicyDeletes the specified policy from the specified load balancer. This policy must not be enabled for any listeners.
POST/#Action=DeleteLoadBalancerPolicyDeletes the specified policy from the specified load balancer. This policy must not be enabled for any listeners.
GET/#Action=DeregisterInstancesFromLoadBalancer<p>Deregisters the specified instances from the specified load balancer. After the instance is deregistered, it no longer receives traffic from the load balance
POST/#Action=DeregisterInstancesFromLoadBalancer<p>Deregisters the specified instances from the specified load balancer. After the instance is deregistered, it no longer receives traffic from the load balance
GET/#Action=DescribeAccountLimits<p>Describes the current Elastic Load Balancing resource limits for your AWS account.</p> <p>For more information, see <a href="https://docs.aws.amazon.com/elas
POST/#Action=DescribeAccountLimits<p>Describes the current Elastic Load Balancing resource limits for your AWS account.</p> <p>For more information, see <a href="https://docs.aws.amazon.com/elas
GET/#Action=DescribeInstanceHealthDescribes the state of the specified instances with respect to the specified load balancer. If no instances are specified, the call describes the state of all i
POST/#Action=DescribeInstanceHealthDescribes the state of the specified instances with respect to the specified load balancer. If no instances are specified, the call describes the state of all i
GET/#Action=DescribeLoadBalancerAttributesDescribes the attributes for the specified load balancer.
POST/#Action=DescribeLoadBalancerAttributesDescribes the attributes for the specified load balancer.
GET/#Action=DescribeLoadBalancerPolicies<p>Describes the specified policies.</p> <p>If you specify a load balancer name, the action returns the descriptions of all policies created for the load balanc
POST/#Action=DescribeLoadBalancerPolicies<p>Describes the specified policies.</p> <p>If you specify a load balancer name, the action returns the descriptions of all policies created for the load balanc
GET/#Action=DescribeLoadBalancerPolicyTypes<p>Describes the specified load balancer policy types or all load balancer policy types.</p> <p>The description of each type indicates how it can be used. For e
POST/#Action=DescribeLoadBalancerPolicyTypes<p>Describes the specified load balancer policy types or all load balancer policy types.</p> <p>The description of each type indicates how it can be used. For e
GET/#Action=DescribeLoadBalancersDescribes the specified the load balancers. If no load balancers are specified, the call describes all of your load balancers.
POST/#Action=DescribeLoadBalancersDescribes the specified the load balancers. If no load balancers are specified, the call describes all of your load balancers.
GET/#Action=DescribeTagsDescribes the tags associated with the specified load balancers.
POST/#Action=DescribeTagsDescribes the tags associated with the specified load balancers.
GET/#Action=DetachLoadBalancerFromSubnets<p>Removes the specified subnets from the set of configured subnets for the load balancer.</p> <p>After a subnet is removed, all EC2 instances registered with t
POST/#Action=DetachLoadBalancerFromSubnets<p>Removes the specified subnets from the set of configured subnets for the load balancer.</p> <p>After a subnet is removed, all EC2 instances registered with t
GET/#Action=DisableAvailabilityZonesForLoadBalancer<p>Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.</p> <p>For load
POST/#Action=DisableAvailabilityZonesForLoadBalancer<p>Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.</p> <p>For load
GET/#Action=EnableAvailabilityZonesForLoadBalancer<p>Adds the specified Availability Zones to the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.</p> <p>For load balan
POST/#Action=EnableAvailabilityZonesForLoadBalancer<p>Adds the specified Availability Zones to the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.</p> <p>For load balan
GET/#Action=ModifyLoadBalancerAttributes<p>Modifies the attributes of the specified load balancer.</p> <p>You can modify the load balancer attributes, such as <code>AccessLogs</code>, <code>Connection
POST/#Action=ModifyLoadBalancerAttributes<p>Modifies the attributes of the specified load balancer.</p> <p>You can modify the load balancer attributes, such as <code>AccessLogs</code>, <code>Connection
GET/#Action=RegisterInstancesWithLoadBalancer<p>Adds the specified instances to the specified load balancer.</p> <p>The instance must be a running instance in the same network as the load balancer (EC2-Cla
POST/#Action=RegisterInstancesWithLoadBalancer<p>Adds the specified instances to the specified load balancer.</p> <p>The instance must be a running instance in the same network as the load balancer (EC2-Cla
GET/#Action=RemoveTagsRemoves one or more tags from the specified load balancer.
POST/#Action=RemoveTagsRemoves one or more tags from the specified load balancer.
GET/#Action=SetLoadBalancerListenerSSLCertificate<p>Sets the certificate that terminates the specified listener's SSL connections. The specified certificate replaces any prior certificate that was used on the
POST/#Action=SetLoadBalancerListenerSSLCertificate<p>Sets the certificate that terminates the specified listener's SSL connections. The specified certificate replaces any prior certificate that was used on the
GET/#Action=SetLoadBalancerPoliciesForBackendServer<p>Replaces the set of policies associated with the specified port on which the EC2 instance is listening with a new set of policies. At this time, only the bac
POST/#Action=SetLoadBalancerPoliciesForBackendServer<p>Replaces the set of policies associated with the specified port on which the EC2 instance is listening with a new set of policies. At this time, only the bac
GET/#Action=SetLoadBalancerPoliciesOfListener<p>Replaces the current set of policies for the specified load balancer port with the specified set of policies.</p> <p>To enable back-end server authentication
POST/#Action=SetLoadBalancerPoliciesOfListener<p>Replaces the current set of policies for the specified load balancer port with the specified set of policies.</p> <p>To enable back-end server authentication
GET/#Action=AddListenerCertificates<p>Adds the specified SSL server certificate to the certificate list for the specified HTTPS or TLS listener.</p> <p>If the certificate in already in the certif
POST/#Action=AddListenerCertificates<p>Adds the specified SSL server certificate to the certificate list for the specified HTTPS or TLS listener.</p> <p>If the certificate in already in the certif
GET/#Action=CreateListener<p>Creates a listener for the specified Application Load Balancer, Network Load Balancer, or Gateway Load Balancer.</p> <p>For more information, see the followi
POST/#Action=CreateListener<p>Creates a listener for the specified Application Load Balancer, Network Load Balancer, or Gateway Load Balancer.</p> <p>For more information, see the followi
GET/#Action=CreateRule<p>Creates a rule for the specified listener. The listener must be associated with an Application Load Balancer.</p> <p>Each rule consists of a priority, one or
POST/#Action=CreateRule<p>Creates a rule for the specified listener. The listener must be associated with an Application Load Balancer.</p> <p>Each rule consists of a priority, one or
GET/#Action=CreateTargetGroup<p>Creates a target group.</p> <p>For more information, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/ap
POST/#Action=CreateTargetGroup<p>Creates a target group.</p> <p>For more information, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/ap
GET/#Action=DeleteListener<p>Deletes the specified listener.</p> <p>Alternatively, your listener is deleted when you delete the load balancer to which it is attached.</p>
POST/#Action=DeleteListener<p>Deletes the specified listener.</p> <p>Alternatively, your listener is deleted when you delete the load balancer to which it is attached.</p>
GET/#Action=DeleteRule<p>Deletes the specified rule.</p> <p>You can't delete the default rule.</p>
POST/#Action=DeleteRule<p>Deletes the specified rule.</p> <p>You can't delete the default rule.</p>
GET/#Action=DeleteTargetGroup<p>Deletes the specified target group.</p> <p>You can delete a target group if it is not referenced by any actions. Deleting a target group also deletes any ass
POST/#Action=DeleteTargetGroup<p>Deletes the specified target group.</p> <p>You can delete a target group if it is not referenced by any actions. Deleting a target group also deletes any ass
GET/#Action=DeregisterTargetsDeregisters the specified targets from the specified target group. After the targets are deregistered, they no longer receive traffic from the load balancer.
POST/#Action=DeregisterTargetsDeregisters the specified targets from the specified target group. After the targets are deregistered, they no longer receive traffic from the load balancer.
GET/#Action=DescribeListenerCertificates<p>Describes the default certificate and the certificate list for the specified HTTPS or TLS listener.</p> <p>If the default certificate is also in the certific
POST/#Action=DescribeListenerCertificates<p>Describes the default certificate and the certificate list for the specified HTTPS or TLS listener.</p> <p>If the default certificate is also in the certific
GET/#Action=DescribeListenersDescribes the specified listeners or the listeners for the specified Application Load Balancer, Network Load Balancer, or Gateway Load Balancer. You must specif
POST/#Action=DescribeListenersDescribes the specified listeners or the listeners for the specified Application Load Balancer, Network Load Balancer, or Gateway Load Balancer. You must specif
GET/#Action=DescribeRulesDescribes the specified rules or the rules for the specified listener. You must specify either a listener or one or more rules.
POST/#Action=DescribeRulesDescribes the specified rules or the rules for the specified listener. You must specify either a listener or one or more rules.
GET/#Action=DescribeSSLPolicies<p>Describes the specified policies or all policies used for SSL negotiation.</p> <p>For more information, see <a href="https://docs.aws.amazon.com/elasticloadb
POST/#Action=DescribeSSLPolicies<p>Describes the specified policies or all policies used for SSL negotiation.</p> <p>For more information, see <a href="https://docs.aws.amazon.com/elasticloadb
GET/#Action=DescribeTargetGroupAttributes<p>Describes the attributes for the specified target group.</p> <p>For more information, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.c
POST/#Action=DescribeTargetGroupAttributes<p>Describes the attributes for the specified target group.</p> <p>For more information, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.c
GET/#Action=DescribeTargetGroupsDescribes the specified target groups or all of your target groups. By default, all target groups are described. Alternatively, you can specify one of the follo
POST/#Action=DescribeTargetGroupsDescribes the specified target groups or all of your target groups. By default, all target groups are described. Alternatively, you can specify one of the follo
GET/#Action=DescribeTargetHealthDescribes the health of the specified targets or all of your targets.
POST/#Action=DescribeTargetHealthDescribes the health of the specified targets or all of your targets.
GET/#Action=ModifyListener<p>Replaces the specified properties of the specified listener. Any properties that you do not specify remain unchanged.</p> <p>Changing the protocol from HTTPS
POST/#Action=ModifyListener<p>Replaces the specified properties of the specified listener. Any properties that you do not specify remain unchanged.</p> <p>Changing the protocol from HTTPS
GET/#Action=ModifyRule<p>Replaces the specified properties of the specified rule. Any properties that you do not specify are unchanged.</p> <p>To add an item to a list, remove an ite
POST/#Action=ModifyRule<p>Replaces the specified properties of the specified rule. Any properties that you do not specify are unchanged.</p> <p>To add an item to a list, remove an ite
GET/#Action=ModifyTargetGroupModifies the health checks used when evaluating the health state of the targets in the specified target group.
POST/#Action=ModifyTargetGroupModifies the health checks used when evaluating the health state of the targets in the specified target group.
GET/#Action=ModifyTargetGroupAttributesModifies the specified attributes of the specified target group.
POST/#Action=ModifyTargetGroupAttributesModifies the specified attributes of the specified target group.
GET/#Action=RegisterTargets<p>Registers the specified targets with the specified target group.</p> <p>If the target is an EC2 instance, it must be in the <code>running</code> state when y
POST/#Action=RegisterTargets<p>Registers the specified targets with the specified target group.</p> <p>If the target is an EC2 instance, it must be in the <code>running</code> state when y
GET/#Action=RemoveListenerCertificatesRemoves the specified certificate from the certificate list for the specified HTTPS or TLS listener.
POST/#Action=RemoveListenerCertificatesRemoves the specified certificate from the certificate list for the specified HTTPS or TLS listener.

Showing the first 100 of 108 endpoints; the full list is in the documentation.

Questions

Does the Elastic Load Balancing API need an API key?

Yes. The Elastic Load Balancing API uses API key authentication; the documentation explains how to get credentials.

Does the Elastic Load Balancing API support HTTPS?

Yes, the Elastic Load Balancing API is served over HTTPS.

How many endpoints does the Elastic Load Balancing API have?

Its OpenAPI description lists 108 endpoints in version 2015-12-01. The first 100 are shown on this page.

What are alternatives to the Elastic Load Balancing API?

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