NAME

Paws::ELB - Perl Interface to AWS Elastic Load Balancing

SYNOPSIS

use Paws;

my $obj = Paws->service('ELB');
my $res = $obj->Method(
  Arg1 => $val1,
  Arg2 => [ 'V1', 'V2' ],
  # if Arg3 is an object, the HashRef will be used as arguments to the constructor
  # of the arguments type
  Arg3 => { Att1 => 'Val1' },
  # if Arg4 is an array of objects, the HashRefs will be passed as arguments to
  # the constructor of the arguments type
  Arg4 => [ { Att1 => 'Val1'  }, { Att1 => 'Val2' } ],
);

DESCRIPTION

Elastic Load Balancing

A load balancer can distribute incoming traffic across your EC2 instances. This enables you to increase the availability of your application. The load balancer also monitors the health of its registered instances and ensures that it routes traffic only to healthy instances. 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 and a protocol and port number for connections from the load balancer to the instances.

Elastic Load Balancing supports three types of load balancers: Application Load Balancers, Network Load Balancers, and Classic Load Balancers. You can select a load balancer based on your application needs. For more information, see the Elastic Load Balancing User Guide (https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/).

This reference covers the 2012-06-01 API, which supports Classic Load Balancers. The 2015-12-01 API supports Application Load Balancers and Network Load Balancers.

To get started, create a load balancer with one or more listeners using CreateLoadBalancer. Register your instances with the load balancer using RegisterInstancesWithLoadBalancer.

All Elastic Load Balancing operations are idempotent, which means that they complete at most one time. If you repeat an operation, it succeeds with a 200 OK response code.

For the AWS API documentation, see https://docs.aws.amazon.com/goto/WebAPI/elasticloadbalancing-2012-06-01

METHODS

AddTags

LoadBalancerNames => ArrayRef[Str|Undef]
Tags => ArrayRef[Paws::ELB::Tag]

Each argument is described in detail in: Paws::ELB::AddTags

Returns: a Paws::ELB::AddTagsOutput instance

Adds the specified tags to the specified load balancer. Each load balancer can have a maximum of 10 tags.

Each tag consists of a key and an optional value. If a tag with the same key is already associated with the load balancer, AddTags updates its value.

For more information, see Tag Your Classic Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/add-remove-tags.html) in the Classic Load Balancers Guide.

ApplySecurityGroupsToLoadBalancer

LoadBalancerName => Str
SecurityGroups => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::ApplySecurityGroupsToLoadBalancer

Returns: a Paws::ELB::ApplySecurityGroupsToLoadBalancerOutput instance

Associates one or more security groups with your load balancer in a virtual private cloud (VPC). The specified security groups override the previously associated security groups.

For more information, see Security Groups for Load Balancers in a VPC (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-security-groups.html#elb-vpc-security-groups) in the Classic Load Balancers Guide.

AttachLoadBalancerToSubnets

LoadBalancerName => Str
Subnets => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::AttachLoadBalancerToSubnets

Returns: a Paws::ELB::AttachLoadBalancerToSubnetsOutput instance

Adds one or more subnets to the set of configured subnets for the specified load balancer.

The load balancer evenly distributes requests across all registered subnets. For more information, see Add or Remove Subnets for Your Load Balancer in a VPC (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-manage-subnets.html) in the Classic Load Balancers Guide.

ConfigureHealthCheck

HealthCheck => Paws::ELB::HealthCheck
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::ConfigureHealthCheck

Returns: a Paws::ELB::ConfigureHealthCheckOutput instance

Specifies the health check settings to use when evaluating the health state of your EC2 instances.

For more information, see Configure Health Checks for Your Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-healthchecks.html) in the Classic Load Balancers Guide.

CreateAppCookieStickinessPolicy

CookieName => Str
LoadBalancerName => Str
PolicyName => Str

Each argument is described in detail in: Paws::ELB::CreateAppCookieStickinessPolicy

Returns: a Paws::ELB::CreateAppCookieStickinessPolicyOutput instance

Generates a stickiness policy with sticky session lifetimes that follow that of an application-generated cookie. This policy can be associated only with HTTP/HTTPS listeners.

This policy is similar to the policy created by CreateLBCookieStickinessPolicy, except that the lifetime of the special Elastic Load Balancing cookie, AWSELB, follows the lifetime of the application-generated cookie specified in the policy configuration. The load balancer only inserts a new stickiness cookie when the application response includes a new application cookie.

If the application cookie is explicitly removed or expires, the session stops being sticky until a new application cookie is issued.

For more information, see Application-Controlled Session Stickiness (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html#enable-sticky-sessions-application) in the Classic Load Balancers Guide.

CreateLBCookieStickinessPolicy

LoadBalancerName => Str
PolicyName => Str
[CookieExpirationPeriod => Int]

Each argument is described in detail in: Paws::ELB::CreateLBCookieStickinessPolicy

Returns: a Paws::ELB::CreateLBCookieStickinessPolicyOutput instance

Generates a stickiness policy with sticky session lifetimes controlled by the lifetime of the browser (user-agent) or a specified expiration period. This policy can be associated only with HTTP/HTTPS listeners.

When a load balancer implements this policy, the load balancer uses a special cookie to track the instance for each request. When the load balancer receives a request, it first checks to see if this cookie is present in the request. If so, the load balancer sends the request to the application server specified in the cookie. If not, the load balancer sends the request to a server that is chosen based on the existing load-balancing algorithm.

A cookie is inserted into the response for binding subsequent requests from the same user to that server. The validity of the cookie is based on the cookie expiration time, which is specified in the policy configuration.

For more information, see Duration-Based Session Stickiness (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html#enable-sticky-sessions-duration) in the Classic Load Balancers Guide.

CreateLoadBalancer

Listeners => ArrayRef[Paws::ELB::Listener]
LoadBalancerName => Str
[AvailabilityZones => ArrayRef[Str|Undef]]
[Scheme => Str]
[SecurityGroups => ArrayRef[Str|Undef]]
[Subnets => ArrayRef[Str|Undef]]
[Tags => ArrayRef[Paws::ELB::Tag]]

Each argument is described in detail in: Paws::ELB::CreateLoadBalancer

Returns: a Paws::ELB::CreateAccessPointOutput instance

Creates a Classic Load Balancer.

You can add listeners, security groups, subnets, and tags when you create your load balancer, or you can add them later using CreateLoadBalancerListeners, ApplySecurityGroupsToLoadBalancer, AttachLoadBalancerToSubnets, and AddTags.

To describe your current load balancers, see DescribeLoadBalancers. When you are finished with a load balancer, you can delete it using DeleteLoadBalancer.

You can create up to 20 load balancers per region per account. You can request an increase for the number of load balancers for your account. For more information, see Limits for Your Classic Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-limits.html) in the Classic Load Balancers Guide.

CreateLoadBalancerListeners

Listeners => ArrayRef[Paws::ELB::Listener]
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::CreateLoadBalancerListeners

Returns: a Paws::ELB::CreateLoadBalancerListenerOutput instance

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 properties of the new listener must match the properties of the existing listener.

For more information, see Listeners for Your Classic Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-listener-config.html) in the Classic Load Balancers Guide.

CreateLoadBalancerPolicy

LoadBalancerName => Str
PolicyName => Str
PolicyTypeName => Str
[PolicyAttributes => ArrayRef[Paws::ELB::PolicyAttribute]]

Each argument is described in detail in: Paws::ELB::CreateLoadBalancerPolicy

Returns: a Paws::ELB::CreateLoadBalancerPolicyOutput instance

Creates a policy with the specified attributes for the specified load balancer.

Policies are settings that are saved for your load balancer and that can be applied to the listener or the application server, depending on the policy type.

DeleteLoadBalancer

LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::DeleteLoadBalancer

Returns: a Paws::ELB::DeleteAccessPointOutput instance

Deletes the specified load balancer.

If you are attempting to recreate a load balancer, you must reconfigure all settings. The DNS name associated with a deleted load balancer are no longer usable. The name and associated DNS record of the deleted load balancer no longer exist and traffic sent to any of its IP addresses is no longer delivered to your instances.

If the load balancer does not exist or has already been deleted, the call to DeleteLoadBalancer still succeeds.

DeleteLoadBalancerListeners

LoadBalancerName => Str
LoadBalancerPorts => ArrayRef[Int]

Each argument is described in detail in: Paws::ELB::DeleteLoadBalancerListeners

Returns: a Paws::ELB::DeleteLoadBalancerListenerOutput instance

Deletes the specified listeners from the specified load balancer.

DeleteLoadBalancerPolicy

LoadBalancerName => Str
PolicyName => Str

Each argument is described in detail in: Paws::ELB::DeleteLoadBalancerPolicy

Returns: a Paws::ELB::DeleteLoadBalancerPolicyOutput instance

Deletes the specified policy from the specified load balancer. This policy must not be enabled for any listeners.

DeregisterInstancesFromLoadBalancer

Instances => ArrayRef[Paws::ELB::Instance]
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::DeregisterInstancesFromLoadBalancer

Returns: a Paws::ELB::DeregisterEndPointsOutput instance

Deregisters the specified instances from the specified load balancer. After the instance is deregistered, it no longer receives traffic from the load balancer.

You can use DescribeLoadBalancers to verify that the instance is deregistered from the load balancer.

For more information, see Register or De-Register EC2 Instances (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-deregister-register-instances.html) in the Classic Load Balancers Guide.

DescribeAccountLimits

[Marker => Str]
[PageSize => Int]

Each argument is described in detail in: Paws::ELB::DescribeAccountLimits

Returns: a Paws::ELB::DescribeAccountLimitsOutput instance

Describes the current Elastic Load Balancing resource limits for your AWS account.

For more information, see Limits for Your Classic Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-limits.html) in the Classic Load Balancers Guide.

DescribeInstanceHealth

LoadBalancerName => Str
[Instances => ArrayRef[Paws::ELB::Instance]]

Each argument is described in detail in: Paws::ELB::DescribeInstanceHealth

Returns: a Paws::ELB::DescribeEndPointStateOutput instance

Describes 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 instances that are currently registered with the load balancer. If instances are specified, their state is returned even if they are no longer registered with the load balancer. The state of terminated instances is not returned.

DescribeLoadBalancerAttributes

LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::DescribeLoadBalancerAttributes

Returns: a Paws::ELB::DescribeLoadBalancerAttributesOutput instance

Describes the attributes for the specified load balancer.

DescribeLoadBalancerPolicies

[LoadBalancerName => Str]
[PolicyNames => ArrayRef[Str|Undef]]

Each argument is described in detail in: Paws::ELB::DescribeLoadBalancerPolicies

Returns: a Paws::ELB::DescribeLoadBalancerPoliciesOutput instance

Describes the specified policies.

If you specify a load balancer name, the action returns the descriptions of all policies created for the load balancer. If you specify a policy name associated with your load balancer, the action returns the description of that policy. If you don't specify a load balancer name, the action returns descriptions of the specified sample policies, or descriptions of all sample policies. The names of the sample policies have the ELBSample- prefix.

DescribeLoadBalancerPolicyTypes

[PolicyTypeNames => ArrayRef[Str|Undef]]

Each argument is described in detail in: Paws::ELB::DescribeLoadBalancerPolicyTypes

Returns: a Paws::ELB::DescribeLoadBalancerPolicyTypesOutput instance

Describes the specified load balancer policy types or all load balancer policy types.

The description of each type indicates how it can be used. For example, some policies can be used only with layer 7 listeners, some policies can be used only with layer 4 listeners, and some policies can be used only with your EC2 instances.

You can use CreateLoadBalancerPolicy to create a policy configuration for any of these policy types. Then, depending on the policy type, use either SetLoadBalancerPoliciesOfListener or SetLoadBalancerPoliciesForBackendServer to set the policy.

DescribeLoadBalancers

[LoadBalancerNames => ArrayRef[Str|Undef]]
[Marker => Str]
[PageSize => Int]

Each argument is described in detail in: Paws::ELB::DescribeLoadBalancers

Returns: a Paws::ELB::DescribeAccessPointsOutput instance

Describes the specified the load balancers. If no load balancers are specified, the call describes all of your load balancers.

DescribeTags

LoadBalancerNames => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::DescribeTags

Returns: a Paws::ELB::DescribeTagsOutput instance

Describes the tags associated with the specified load balancers.

DetachLoadBalancerFromSubnets

LoadBalancerName => Str
Subnets => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::DetachLoadBalancerFromSubnets

Returns: a Paws::ELB::DetachLoadBalancerFromSubnetsOutput instance

Removes the specified subnets from the set of configured subnets for the load balancer.

After a subnet is removed, all EC2 instances registered with the load balancer in the removed subnet go into the OutOfService state. Then, the load balancer balances the traffic among the remaining routable subnets.

DisableAvailabilityZonesForLoadBalancer

AvailabilityZones => ArrayRef[Str|Undef]
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::DisableAvailabilityZonesForLoadBalancer

Returns: a Paws::ELB::RemoveAvailabilityZonesOutput instance

Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.

For load balancers in a non-default VPC, use DetachLoadBalancerFromSubnets.

There must be at least one Availability Zone registered with a load balancer at all times. After an Availability Zone is removed, all instances registered with the load balancer that are in the removed Availability Zone go into the OutOfService state. Then, the load balancer attempts to equally balance the traffic among its remaining Availability Zones.

For more information, see Add or Remove Availability Zones (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/enable-disable-az.html) in the Classic Load Balancers Guide.

EnableAvailabilityZonesForLoadBalancer

AvailabilityZones => ArrayRef[Str|Undef]
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::EnableAvailabilityZonesForLoadBalancer

Returns: a Paws::ELB::AddAvailabilityZonesOutput instance

Adds the specified Availability Zones to the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC.

For load balancers in a non-default VPC, use AttachLoadBalancerToSubnets.

The load balancer evenly distributes requests across all its registered Availability Zones that contain instances. For more information, see Add or Remove Availability Zones (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/enable-disable-az.html) in the Classic Load Balancers Guide.

ModifyLoadBalancerAttributes

LoadBalancerAttributes => Paws::ELB::LoadBalancerAttributes
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::ModifyLoadBalancerAttributes

Returns: a Paws::ELB::ModifyLoadBalancerAttributesOutput instance

Modifies the attributes of the specified load balancer.

You can modify the load balancer attributes, such as AccessLogs, ConnectionDraining, and CrossZoneLoadBalancing by either enabling or disabling them. Or, you can modify the load balancer attribute ConnectionSettings by specifying an idle connection timeout value for your load balancer.

For more information, see the following in the Classic Load Balancers Guide:

Cross-Zone Load Balancing (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/enable-disable-crosszone-lb.html)
Connection Draining (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/config-conn-drain.html)
Access Logs (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/access-log-collection.html)
Idle Connection Timeout (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/config-idle-timeout.html)

RegisterInstancesWithLoadBalancer

Instances => ArrayRef[Paws::ELB::Instance]
LoadBalancerName => Str

Each argument is described in detail in: Paws::ELB::RegisterInstancesWithLoadBalancer

Returns: a Paws::ELB::RegisterEndPointsOutput instance

Adds the specified instances to the specified load balancer.

The instance must be a running instance in the same network as the load balancer (EC2-Classic or the same VPC). If you have EC2-Classic instances and a load balancer in a VPC with ClassicLink enabled, you can link the EC2-Classic instances to that VPC and then register the linked EC2-Classic instances with the load balancer in the VPC.

Note that RegisterInstanceWithLoadBalancer completes when the request has been registered. Instance registration takes a little time to complete. To check the state of the registered instances, use DescribeLoadBalancers or DescribeInstanceHealth.

After the instance is registered, it starts receiving traffic and requests from the load balancer. Any instance that is not in one of the Availability Zones registered for the load balancer is moved to the OutOfService state. If an Availability Zone is added to the load balancer later, any instances registered with the load balancer move to the InService state.

To deregister instances from a load balancer, use DeregisterInstancesFromLoadBalancer.

RemoveTags

LoadBalancerNames => ArrayRef[Str|Undef]
Tags => ArrayRef[Paws::ELB::TagKeyOnly]

Each argument is described in detail in: Paws::ELB::RemoveTags

Returns: a Paws::ELB::RemoveTagsOutput instance

Removes one or more tags from the specified load balancer.

SetLoadBalancerListenerSSLCertificate

LoadBalancerName => Str
LoadBalancerPort => Int
SSLCertificateId => Str

Each argument is described in detail in: Paws::ELB::SetLoadBalancerListenerSSLCertificate

Returns: a Paws::ELB::SetLoadBalancerListenerSSLCertificateOutput instance

Sets the certificate that terminates the specified listener's SSL connections. The specified certificate replaces any prior certificate that was used on the same load balancer and port.

For more information about updating your SSL certificate, see Replace the SSL Certificate for Your Load Balancer (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-update-ssl-cert.html) in the Classic Load Balancers Guide.

SetLoadBalancerPoliciesForBackendServer

InstancePort => Int
LoadBalancerName => Str
PolicyNames => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::SetLoadBalancerPoliciesForBackendServer

Returns: a Paws::ELB::SetLoadBalancerPoliciesForBackendServerOutput instance

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 back-end server authentication policy type can be applied to the instance ports; this policy type is composed of multiple public key policies.

Each time you use SetLoadBalancerPoliciesForBackendServer to enable the policies, use the PolicyNames parameter to list the policies that you want to enable.

You can use DescribeLoadBalancers or DescribeLoadBalancerPolicies to verify that the policy is associated with the EC2 instance.

For more information about enabling back-end instance authentication, see Configure Back-end Instance Authentication (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-create-https-ssl-load-balancer.html#configure_backendauth_clt) in the Classic Load Balancers Guide. For more information about Proxy Protocol, see Configure Proxy Protocol Support (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/enable-proxy-protocol.html) in the Classic Load Balancers Guide.

SetLoadBalancerPoliciesOfListener

LoadBalancerName => Str
LoadBalancerPort => Int
PolicyNames => ArrayRef[Str|Undef]

Each argument is described in detail in: Paws::ELB::SetLoadBalancerPoliciesOfListener

Returns: a Paws::ELB::SetLoadBalancerPoliciesOfListenerOutput instance

Replaces the current set of policies for the specified load balancer port with the specified set of policies.

To enable back-end server authentication, use SetLoadBalancerPoliciesForBackendServer.

For more information about setting policies, see Update the SSL Negotiation Configuration (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/ssl-config-update.html), Duration-Based Session Stickiness (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html#enable-sticky-sessions-duration), and Application-Controlled Session Stickiness (https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html#enable-sticky-sessions-application) in the Classic Load Balancers Guide.

PAGINATORS

Paginator methods are helpers that repetively call methods that return partial results

DescribeAllAccountLimits(sub { },[Marker => Str, PageSize => Int])

DescribeAllAccountLimits([Marker => Str, PageSize => Int])

If passed a sub as first parameter, it will call the sub for each element found in :

- Limits, passing the object as the first parameter, and the string 'Limits' as the second parameter

If not, it will return a a Paws::ELB::DescribeAccountLimitsOutput instance with all the params; from all the responses. Please take into account that this mode can potentially consume vasts ammounts of memory.

DescribeAllLoadBalancers(sub { },[LoadBalancerNames => ArrayRef[Str|Undef], Marker => Str, PageSize => Int])

DescribeAllLoadBalancers([LoadBalancerNames => ArrayRef[Str|Undef], Marker => Str, PageSize => Int])