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.
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.
elb(config = list())Optional configuration of credentials, endpoint, and/or region.
svc <- elb(
config = list(
credentials = list(
creds = list(
access_key_id = "string",
secret_access_key = "string",
session_token = "string"
),
profile = "string"
),
endpoint = "string",
region = "string"
)
)
| add_tags | Adds the specified tags to the specified load balancer |
| apply_security_groups_to_load_balancer | Associates one or more security groups with your load balancer in a virtual private cloud (VPC) |
| attach_load_balancer_to_subnets | Adds one or more subnets to the set of configured subnets for the specified load balancer |
| configure_health_check | Specifies the health check settings to use when evaluating the health state of your EC2 instances |
| create_app_cookie_stickiness_policy | Generates a stickiness policy with sticky session lifetimes that follow that of an application-generated cookie |
| create_lb_cookie_stickiness_policy | Generates a stickiness policy with sticky session lifetimes controlled by the lifetime of the browser (user-agent) or a specified expiration period |
| create_load_balancer | Creates a Classic Load Balancer |
| create_load_balancer_listeners | Creates one or more listeners for the specified load balancer |
| create_load_balancer_policy | Creates a policy with the specified attributes for the specified load balancer |
| delete_load_balancer | Deletes the specified load balancer |
| delete_load_balancer_listeners | Deletes the specified listeners from the specified load balancer |
| delete_load_balancer_policy | Deletes the specified policy from the specified load balancer |
| deregister_instances_from_load_balancer | Deregisters the specified instances from the specified load balancer |
| describe_account_limits | Describes the current Elastic Load Balancing resource limits for your AWS account |
| describe_instance_health | Describes the state of the specified instances with respect to the specified load balancer |
| describe_load_balancer_attributes | Describes the attributes for the specified load balancer |
| describe_load_balancer_policies | Describes the specified policies |
| describe_load_balancer_policy_types | Describes the specified load balancer policy types or all load balancer policy types |
| describe_load_balancers | Describes the specified the load balancers |
| describe_tags | Describes the tags associated with the specified load balancers |
| detach_load_balancer_from_subnets | Removes the specified subnets from the set of configured subnets for the load balancer |
| disable_availability_zones_for_load_balancer | Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC |
| enable_availability_zones_for_load_balancer | Adds the specified Availability Zones to the set of Availability Zones for the specified load balancer in EC2-Classic or a default VPC |
| modify_load_balancer_attributes | Modifies the attributes of the specified load balancer |
| register_instances_with_load_balancer | Adds the specified instances to the specified load balancer |
| remove_tags | Removes one or more tags from the specified load balancer |
| set_load_balancer_listener_ssl_certificate | Sets the certificate that terminates the specified listener's SSL connections |
| set_load_balancer_policies_for_backend_server | Replaces the set of policies associated with the specified port on which the EC2 instance is listening with a new set of policies |
# NOT RUN {
# This example adds two tags to the specified load balancer.
# }
# NOT RUN {
svc <- elb()
svc$add_tags(
LoadBalancerNames = list(
"my-load-balancer"
),
Tags = list(
list(
Key = "project",
Value = "lima"
),
list(
Key = "department",
Value = "digital-media"
)
)
)
# }
# NOT RUN {
# }
Run the code above in your browser using DataCamp Workspace