Describes the attributes for the specified Application Load Balancer, Network Load Balancer, or Gateway Load Balancer.
For more information, see the following:
See also: AWS API Documentation
describe-load-balancer-attributes
--load-balancer-arn <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]
--load-balancer-arn
(string)
The Amazon Resource Name (ARN) of the load balancer.
--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
.
--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.
--debug
(boolean)
Turn on debug logging.
--endpoint-url
(string)
Override command’s default URL with the given URL.
--no-verify-ssl
(boolean)
By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.
--no-paginate
(boolean)
Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.
--output
(string)
The formatting style for command output.
--query
(string)
A JMESPath query to use in filtering the response data.
--profile
(string)
Use a specific profile from your credential file.
--region
(string)
The region to use. Overrides config/env settings.
--version
(string)
Display the version of this tool.
--color
(string)
Turn on/off color output.
--no-sign-request
(boolean)
Do not sign requests. Credentials will not be loaded if this argument is provided.
--ca-bundle
(string)
The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.
--cli-read-timeout
(int)
The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.
--cli-connect-timeout
(int)
The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.
--cli-binary-format
(string)
The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb://
will always be treated as binary and use the file contents directly regardless of the cli-binary-format
setting. When using file://
the file contents will need to properly formatted for the configured cli-binary-format
.
--no-cli-pager
(boolean)
Disable cli pager for output.
--cli-auto-prompt
(boolean)
Automatically prompt for CLI input parameters.
--no-cli-auto-prompt
(boolean)
Disable automatically prompt for CLI input parameters.
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 load balancer attributes
The following describe-load-balancer-attributes
example displays the attributes of the specified load balancer.
aws elbv2 describe-load-balancer-attributes \
--load-balancer-arn arn:aws:elasticloadbalancing:us-west-2:123456789012:loadbalancer/app/my-load-balancer/50dc6c495c0c9188
The following example output show the attributes for an Application Load Balancer.
{
"Attributes": [
{
"Value": "false",
"Key": "access_logs.s3.enabled"
},
{
"Value": "",
"Key": "access_logs.s3.bucket"
},
{
"Value": "",
"Key": "access_logs.s3.prefix"
},
{
"Value": "60",
"Key": "idle_timeout.timeout_seconds"
},
{
"Value": "false",
"Key": "deletion_protection.enabled"
},
{
"Value": "true",
"Key": "routing.http2.enabled"
}
]
}
The following example output includes the attributes for a Network Load Balancer.
{
"Attributes": [
{
"Value": "false",
"Key": "access_logs.s3.enabled"
},
{
"Value": "",
"Key": "access_logs.s3.bucket"
},
{
"Value": "",
"Key": "access_logs.s3.prefix"
},
{
"Value": "false",
"Key": "deletion_protection.enabled"
},
{
"Value": "false",
"Key": "load_balancing.cross_zone.enabled"
}
]
}
Attributes -> (list)
Information about the load balancer attributes.
(structure)
Information about a load balancer attribute.
Key -> (string)
The name of the attribute.
The following attributes are supported by all load balancers:
deletion_protection.enabled
- Indicates whether deletion protection is enabled. The value istrue
orfalse
. The default isfalse
.load_balancing.cross_zone.enabled
- Indicates whether cross-zone load balancing is enabled. The possible values aretrue
andfalse
. The default for Network Load Balancers and Gateway Load Balancers isfalse
. The default for Application Load Balancers istrue
, and cannot be changed.The following attributes are supported by both Application Load Balancers and Network Load Balancers:
access_logs.s3.enabled
- Indicates whether access logs are enabled. The value istrue
orfalse
. The default isfalse
.access_logs.s3.bucket
- The name of the S3 bucket for the access logs. This attribute is required if access logs are enabled. The bucket must exist in the same region as the load balancer and have a bucket policy that grants Elastic Load Balancing permissions to write to the bucket.access_logs.s3.prefix
- The prefix for the location in the S3 bucket for the access logs.ipv6.deny_all_igw_traffic
- Blocks internet gateway (IGW) access to the load balancer. It is set tofalse
for internet-facing load balancers andtrue
for internal load balancers, preventing unintended access to your internal load balancer through an internet gateway.The following attributes are supported by only Application Load Balancers:
idle_timeout.timeout_seconds
- The idle timeout value, in seconds. The valid range is 1-4000 seconds. The default is 60 seconds.client_keep_alive.seconds
- The client keep alive value, in seconds. The valid range is 60-604800 seconds. The default is 3600 seconds.connection_logs.s3.enabled
- Indicates whether connection logs are enabled. The value istrue
orfalse
. The default isfalse
.connection_logs.s3.bucket
- The name of the S3 bucket for the connection logs. This attribute is required if connection logs are enabled. The bucket must exist in the same region as the load balancer and have a bucket policy that grants Elastic Load Balancing permissions to write to the bucket.connection_logs.s3.prefix
- The prefix for the location in the S3 bucket for the connection logs.routing.http.desync_mitigation_mode
- Determines how the load balancer handles requests that might pose a security risk to your application. The possible values aremonitor
,defensive
, andstrictest
. The default isdefensive
.routing.http.drop_invalid_header_fields.enabled
- Indicates whether HTTP headers with invalid header fields are removed by the load balancer (true
) or routed to targets (false
). The default isfalse
.routing.http.preserve_host_header.enabled
- Indicates whether the Application Load Balancer should preserve theHost
header in the HTTP request and send it to the target without any change. The possible values aretrue
andfalse
. The default isfalse
.routing.http.x_amzn_tls_version_and_cipher_suite.enabled
- Indicates whether the two headers (x-amzn-tls-version
andx-amzn-tls-cipher-suite
), which contain information about the negotiated TLS version and cipher suite, are added to the client request before sending it to the target. Thex-amzn-tls-version
header has information about the TLS protocol version negotiated with the client, and thex-amzn-tls-cipher-suite
header has information about the cipher suite negotiated with the client. Both headers are in OpenSSL format. The possible values for the attribute aretrue
andfalse
. The default isfalse
.routing.http.xff_client_port.enabled
- Indicates whether theX-Forwarded-For
header should preserve the source port that the client used to connect to the load balancer. The possible values aretrue
andfalse
. The default isfalse
.routing.http.xff_header_processing.mode
- Enables you to modify, preserve, or remove theX-Forwarded-For
header in the HTTP request before the Application Load Balancer sends the request to the target. The possible values areappend
,preserve
, andremove
. The default isappend
.
- If the value is
append
, the Application Load Balancer adds the client IP address (of the last hop) to theX-Forwarded-For
header in the HTTP request before it sends it to targets.- If the value is
preserve
the Application Load Balancer preserves theX-Forwarded-For
header in the HTTP request, and sends it to targets without any change.- If the value is
remove
, the Application Load Balancer removes theX-Forwarded-For
header in the HTTP request before it sends it to targets.routing.http2.enabled
- Indicates whether HTTP/2 is enabled. The possible values aretrue
andfalse
. The default istrue
. Elastic Load Balancing requires that message header names contain only alphanumeric characters and hyphens.waf.fail_open.enabled
- Indicates whether to allow a WAF-enabled load balancer to route requests to targets if it is unable to forward the request to Amazon Web Services WAF. The possible values aretrue
andfalse
. The default isfalse
.The following attributes are supported by only Network Load Balancers:
dns_record.client_routing_policy
- Indicates how traffic is distributed among the load balancer Availability Zones. The possible values areavailability_zone_affinity
with 100 percent zonal affinity,partial_availability_zone_affinity
with 85 percent zonal affinity, andany_availability_zone
with 0 percent zonal affinity.Value -> (string)
The value of the attribute.