describe-load-balancers¶

Description¶

Describes the specified load balancers or all of your load balancers.

Synopsis¶

  describe-load-balancers
[--load-balancer-arns <value>]
[--names <value>]
[--page-size <value>]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options¶

--load-balancer-arns (list)

The Amazon Resource Names (ARN) of the load balancers. You can specify up to 20 load balancers in a single call.

(string)

Syntax:

"string" "string" ...

--names (list)

The names of the load balancers.

(string)

Syntax:

"string" "string" ...

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To describe a load balancer

This example describes the specified load balancer.

Command:

aws elbv2 describe-load-balancers --load-balancer-arns arn:aws:elasticloadbalancing:us-west-2:123456789012:loadbalancer/app/my-load-balancer/50dc6c495c0c9188

Output:

{
  "LoadBalancers": [
      {
          "Type": "application",
          "Scheme": "internet-facing",
          "IpAddressType": "ipv4",
          "VpcId": "vpc-3ac0fb5f",
          "AvailabilityZones": [
              {
                  "ZoneName": "us-west-2a",
                  "SubnetId": "subnet-8360a9e7"
              },
              {
                  "ZoneName": "us-west-2b",
                  "SubnetId": "subnet-b7d581c0"
              }
          ],
          "CreatedTime": "2016-03-25T21:26:12.920Z",
          "CanonicalHostedZoneId": "Z2P70J7EXAMPLE",
          "DNSName": "my-load-balancer-424835706.us-west-2.elb.amazonaws.com",
          "SecurityGroups": [
              "sg-5943793c"
          ],
          "LoadBalancerName": "my-load-balancer",
          "State": {
              "Code": "active"
          },
          "LoadBalancerArn": "arn:aws:elasticloadbalancing:us-west-2:123456789012:loadbalancer/app/my-load-balancer/50dc6c495c0c9188"
      }
  ]
}

To describe all load balancers

This example describes all of your load balancers.

Command:

aws elbv2 describe-load-balancers

Output¶

LoadBalancers -> (list)

Information about the load balancers.

(structure)

Information about a load balancer.

LoadBalancerArn -> (string)

The Amazon Resource Name (ARN) of the load balancer.

DNSName -> (string)

The public DNS name of the load balancer.

CanonicalHostedZoneId -> (string)

The ID of the Amazon Route 53 hosted zone associated with the load balancer.

CreatedTime -> (timestamp)

The date and time the load balancer was created.

LoadBalancerName -> (string)

The name of the load balancer.

Scheme -> (string)

The nodes of an Internet-facing load balancer have public IP addresses. The DNS name of an Internet-facing load balancer is publicly resolvable to the public IP addresses of the nodes. Therefore, Internet-facing load balancers can route requests from clients over the internet.

The nodes of an internal load balancer have only private IP addresses. The DNS name of an internal load balancer is publicly resolvable to the private IP addresses of the nodes. Therefore, internal load balancers can route requests only from clients with access to the VPC for the load balancer.

VpcId -> (string)

The ID of the VPC for the load balancer.

State -> (structure)

The state of the load balancer.

Code -> (string)

The state code. The initial state of the load balancer is provisioning . After the load balancer is fully set up and ready to route traffic, its state is active . If load balancer is routing traffic but does not have the resources it needs to scale, its state is``active_impaired`` . If the load balancer could not be set up, its state is failed .

Reason -> (string)

A description of the state.

Type -> (string)

The type of load balancer.

AvailabilityZones -> (list)

The subnets for the load balancer.

(structure)

Information about an Availability Zone.

ZoneName -> (string)

The name of the Availability Zone.

SubnetId -> (string)

The ID of the subnet. You can specify one subnet per Availability Zone.

OutpostId -> (string)

[Application Load Balancers on Outposts] The ID of the Outpost.

LoadBalancerAddresses -> (list)

[Network Load Balancers] If you need static IP addresses for your load balancer, you can specify one Elastic IP address per Availability Zone when you create an internal-facing load balancer. For internal load balancers, you can specify a private IP address from the IPv4 range of the subnet.

(structure)

Information about a static IP address for a load balancer.

IpAddress -> (string)

The static IP address.

AllocationId -> (string)

[Network Load Balancers] The allocation ID of the Elastic IP address for an internal-facing load balancer.

PrivateIPv4Address -> (string)

[Network Load Balancers] The private IPv4 address for an internal load balancer.

IPv6Address -> (string)

[Network Load Balancers] The IPv6 address.

SecurityGroups -> (list)

The IDs of the security groups for the load balancer.

(string)

IpAddressType -> (string)

The type of IP addresses used by the subnets for your load balancer. The possible values are ipv4 (for IPv4 addresses) and dualstack (for IPv4 and IPv6 addresses).

CustomerOwnedIpv4Pool -> (string)

[Application Load Balancers on Outposts] The ID of the customer-owned address pool.

NextMarker -> (string)

If there are additional results, this is the marker for the next set of results. Otherwise, this is null.

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