The names of the load balancers.

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

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

Information about the load balancers.

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

The response's http status code.

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

Information about the tags.

The response's http status code.

The Amazon Resource Name (ARN) of the rule.

The response's http status code.

The Amazon Resource Name (ARN) of the resource.

The tag keys for the tags to remove.

The response's http status code.

The Amazon Resource Name (ARN) of the target group.

The response's http status code.

The IDs of the public subnets. You can specify only one subnet per Availability Zone. You must specify either subnets or subnet mappings.

Application Load Balancers

You must specify subnets from at least two Availability Zones. You cannot specify Elastic IP addresses for your subnets.

Application Load Balancers on Outposts

You must specify one Outpost subnet.

Application Load Balancers on Local Zones

You can specify subnets from one or more Local Zones.

Network Load Balancers

You can specify subnets from one or more Availability Zones. You can specify one Elastic IP address per subnet if you need static IP addresses for your internet-facing load balancer. For internal load balancers, you can specify one private IP address per subnet from the IPv4 range of the subnet. For internet-facing load balancer, you can specify one IPv6 address per subnet.

The IDs of the public subnets. You can specify only one subnet per Availability Zone. You must specify either subnets or subnet mappings.

Application Load Balancers

You must specify subnets from at least two Availability Zones.

Application Load Balancers on Outposts

You must specify one Outpost subnet.

Application Load Balancers on Local Zones

You can specify subnets from one or more Local Zones.

Network Load Balancers

You can specify subnets from one or more Availability Zones.

Network Load Balancers

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). You can’t specify dualstack for a load balancer with a UDP or TCP_UDP listener. Internal load balancers must use ipv4.

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

Information about the subnets.

Network Load Balancers

The IP address type.

The response's http status code.

The tags to assign to the rule.

The Amazon Resource Name (ARN) of the listener.

The conditions.

The rule priority. A listener can't have multiple rules with the same priority.

The actions.

Information about the rule.

The response's http status code.

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

The Amazon Resource Names (ARN) of the listener.

Information about the certificates.

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

The response's http status code.

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

The IDs of the security groups.

The IDs of the security groups associated with the load balancer.

The response's http status code.

The rule priorities.

Information about the rules.

The response's http status code.

The Amazon Resource Names (ARN) of the target groups.

The names of the target groups.

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

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

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

Information about the target groups.

The response's http status code.

The Amazon Resource Name (ARN) of the listener.

The marker for the next set of results. (You received this marker from a previous call.)

The Amazon Resource Names (ARN) of the rules.

The maximum number of results to return with this call.

Information about the rules.

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

The response's http status code.

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

The response's http status code.

The Amazon Resource Name (ARN) of the target group.

The targets.

The response's http status code.

HTTPS and TLS listeners

The security policy that defines which protocols and ciphers are supported.

For more information, see Security policies in the Application Load Balancers Guide or Security policies in the Network Load Balancers Guide.

The protocol for connections from clients to the load balancer. Application Load Balancers support the HTTP and HTTPS protocols. Network Load Balancers support the TCP, TLS, UDP, and TCP_UDP protocols. You can’t change the protocol to UDP or TCP_UDP if dual-stack mode is enabled. You cannot specify a protocol for a Gateway Load Balancer.

The actions for the default rule.

HTTPS and TLS listeners

The default certificate for the listener. You must provide exactly one certificate. Set CertificateArn to the certificate ARN but do not set IsDefault.

TLS listeners

The name of the Application-Layer Protocol Negotiation (ALPN) policy. You can specify one policy name. The following are the possible values:

• HTTP1Only

• HTTP2Only

• HTTP2Optional

• HTTP2Preferred

• None

For more information, see ALPN policies in the Network Load Balancers Guide.

The port for connections from clients to the load balancer. You cannot specify a port for a Gateway Load Balancer.

The Amazon Resource Name (ARN) of the listener.

Information about the modified listener.

The response's http status code.

HTTP/HTTPS health checks

The HTTP or gRPC codes to use when checking for a successful response from a target.

With Network Load Balancers, you can't modify this setting.

HTTP/HTTPS health checks

The destination for health checks on the targets.

HTTP1 or HTTP2 protocol version

The ping path. The default is /.

GRPC protocol version

The path of a custom health check method with the format /package.service/method. The default is /Amazon Web Services.ALB/healthcheck.

Indicates whether health checks are enabled.

The number of consecutive health check failures required before considering the target unhealthy. For target groups with a protocol of TCP or TLS, this value must be the same as the healthy threshold count.

The approximate amount of time, in seconds, between health checks of an individual target. For TCP health checks, the supported values are 10 or 30 seconds.

With Network Load Balancers, you can't modify this setting.

The number of consecutive health checks successes required before considering an unhealthy target healthy.

The protocol the load balancer uses when performing health checks on targets. For Application Load Balancers, the default is HTTP. For Network Load Balancers and Gateway Load Balancers, the default is TCP. The TCP protocol is not supported for health checks if the protocol of the target group is HTTP or HTTPS. It is supported for health checks only if the protocol of the target group is TCP, TLS, UDP, or TCP_UDP. The GENEVE, TLS, UDP, and TCP_UDP protocols are not supported for health checks.

With Network Load Balancers, you can't modify this setting.

HTTP/HTTPS health checks

The amount of time, in seconds, during which no response means a failed health check.

With Network Load Balancers, you can't modify this setting.

The port the load balancer uses when performing health checks on targets.

The Amazon Resource Name (ARN) of the target group.

Information about the modified target group.

The response's http status code.

The Amazon Resource Name (ARN) of the target group.

The attributes.

Information about the attributes.

The response's http status code.

The Amazon Resource Name (ARN) of the target group.

Information about the target group attributes

The response's http status code.

The Amazon Resource Name (ARN) of the listener.

The response's http status code.

The type of load balancer. The default lists the SSL policies for all load balancers.

The names of the policies.

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

Information about the security policies.

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

The response's http status code.

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

Information about the limits.

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

The response's http status code.

The Amazon Resource Name (ARN) of the target group.

The targets. If you specified a port override when you registered a target, you must specify both the target ID and the port when you deregister it.

The response's http status code.

HTTPS and TLS listeners

The security policy that defines which protocols and ciphers are supported.

For more information, see Security policies in the Application Load Balancers Guide and Security policies in the Network Load Balancers Guide.

The protocol for connections from clients to the load balancer. For Application Load Balancers, the supported protocols are HTTP and HTTPS. For Network Load Balancers, the supported protocols are TCP, TLS, UDP, and TCP_UDP. You can’t specify the UDP or TCP_UDP protocol if dual-stack mode is enabled. You cannot specify a protocol for a Gateway Load Balancer.

HTTPS and TLS listeners

The default certificate for the listener. You must provide exactly one certificate. Set CertificateArn to the certificate ARN but do not set IsDefault.

TLS listeners

The name of the Application-Layer Protocol Negotiation (ALPN) policy. You can specify one policy name. The following are the possible values:

• HTTP1Only

• HTTP2Only

• HTTP2Optional

• HTTP2Preferred

• None

For more information, see ALPN policies in the Network Load Balancers Guide.

The tags to assign to the listener.

The port on which the load balancer is listening. You cannot specify a port for a Gateway Load Balancer.

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

The actions for the default rule.

Information about the listener.

The response's http status code.

HTTP/HTTPS protocol

The protocol version. Specify GRPC to send requests to targets using gRPC. Specify HTTP2 to send requests to targets using HTTP/2. The default is HTTP1, which sends requests to targets using HTTP/1.1.

HTTP/HTTPS health checks

The HTTP or gRPC codes to use when checking for a successful response from a target.

HTTP/HTTPS health checks

The destination for health checks on the targets.

HTTP1 or HTTP2 protocol version

The ping path. The default is /.

GRPC protocol version

The path of a custom health check method with the format /package.service/method. The default is /Amazon Web Services.ALB/healthcheck.

Indicates whether health checks are enabled. If the target type is lambda, health checks are disabled by default but can be enabled. If the target type is instance, ip, or alb, health checks are always enabled and cannot be disabled.

The number of consecutive health check failures required before considering a target unhealthy. If the target group protocol is HTTP or HTTPS, the default is 2. If the target group protocol is TCP or TLS, this value must be the same as the healthy threshold count. If the target group protocol is GENEVE, the default is 3. If the target type is lambda, the default is 2.

The identifier of the virtual private cloud (VPC). If the target is a Lambda function, this parameter does not apply. Otherwise, this parameter is required.

The protocol to use for routing traffic to the targets. For Application Load Balancers, the supported protocols are HTTP and HTTPS. For Network Load Balancers, the supported protocols are TCP, TLS, UDP, or TCP_UDP. For Gateway Load Balancers, the supported protocol is GENEVE. A TCP_UDP listener must be associated with a TCP_UDP target group. If the target is a Lambda function, this parameter does not apply.

The approximate amount of time, in seconds, between health checks of an individual target. If the target group protocol is TCP, TLS, UDP, or TCP_UDP, the supported values are 10 and 30 seconds. If the target group protocol is HTTP or HTTPS, the default is 30 seconds. If the target group protocol is GENEVE, the default is 10 seconds. If the target type is lambda, the default is 35 seconds.

The type of target that you must specify when registering targets with this target group. You can't specify targets for a target group using more than one target type.

• instance - Register targets by instance ID. This is the default value.
• ip - Register targets by IP address. You can specify IP addresses from the subnets of the virtual private cloud (VPC) for the target group, the RFC 1918 range (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16), and the RFC 6598 range (100.64.0.0/10). You can't specify publicly routable IP addresses.
• lambda - Register a single Lambda function as a target.
• alb - Register a single Application Load Balancer as a target.

The number of consecutive health checks successes required before considering an unhealthy target healthy. For target groups with a protocol of HTTP or HTTPS, the default is 5. For target groups with a protocol of TCP, TLS, or GENEVE, the default is 3. If the target type is lambda, the default is 5.

The protocol the load balancer uses when performing health checks on targets. For Application Load Balancers, the default is HTTP. For Network Load Balancers and Gateway Load Balancers, the default is TCP. The TCP protocol is not supported for health checks if the protocol of the target group is HTTP or HTTPS. The GENEVE, TLS, UDP, and TCP_UDP protocols are not supported for health checks.

The type of IP address used for this target group. The possible values are ipv4 and ipv6. This is an optional parameter. If not specified, the IP address type defaults to ipv4.

The amount of time, in seconds, during which no response from a target means a failed health check. For target groups with a protocol of HTTP, HTTPS, or GENEVE, the default is 5 seconds. For target groups with a protocol of TCP or TLS, this value must be 6 seconds for HTTP health checks and 10 seconds for TCP and HTTPS health checks. If the target type is lambda, the default is 30 seconds.

The port the load balancer uses when performing health checks on targets. If the protocol is HTTP, HTTPS, TCP, TLS, UDP, or TCP_UDP, the default is traffic-port, which is the port on which each target receives traffic from the load balancer. If the protocol is GENEVE, the default is port 80.

The tags to assign to the target group.

The port on which the targets receive traffic. This port is used unless you specify a port override when registering the target. If the target is a Lambda function, this parameter does not apply. If the protocol is GENEVE, the supported port is 6081.

The name of the target group.

This name must be unique per region per account, can have a maximum of 32 characters, must contain only alphanumeric characters or hyphens, and must not begin or end with a hyphen.

Information about the target group.

The response's http status code.

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

The load balancer attributes.

Information about the load balancer attributes.

The response's http status code.

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

The IP address type. The possible values are ipv4 (for IPv4 addresses) and dualstack (for IPv4 and IPv6 addresses). Internal load balancers must use ipv4. You can’t specify dualstack for a load balancer with a UDP or TCP_UDP listener.

The IP address type.

The response's http status code.

The Amazon Resource Name (ARN) of the resource.

The tags.

The response's http status code.

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

Information about the load balancer attributes.

The response's http status code.

The Amazon Resource Names (ARN) of the listeners.

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

The marker for the next set of results. (You received this marker from a previous call.)

The maximum number of results to return with this call.

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

Information about the listeners.

The response's http status code.

The targets.

The Amazon Resource Name (ARN) of the target group.

Information about the health of the targets.

The response's http status code.

The IDs of the public subnets. You can specify only one subnet per Availability Zone. You must specify either subnets or subnet mappings.

Application Load Balancers

You must specify subnets from at least two Availability Zones. You cannot specify Elastic IP addresses for your subnets.

Application Load Balancers on Outposts

You must specify one Outpost subnet.

Application Load Balancers on Local Zones

You can specify subnets from one or more Local Zones.

Network Load Balancers

You can specify subnets from one or more Availability Zones. You can specify one Elastic IP address per subnet if you need static IP addresses for your internet-facing load balancer. For internal load balancers, you can specify one private IP address per subnet from the IPv4 range of the subnet. For internet-facing load balancer, you can specify one IPv6 address per subnet.

Gateway Load Balancers

You can specify subnets from one or more Availability Zones. You cannot specify Elastic IP addresses for your subnets.

Application Load Balancers

The IDs of the security groups for the load balancer.

The IDs of the public subnets. You can specify only one subnet per Availability Zone. You must specify either subnets or subnet mappings.

Application Load Balancers

You must specify subnets from at least two Availability Zones.

Application Load Balancers on Outposts

You must specify one Outpost subnet.

Application Load Balancers on Local Zones

You can specify subnets from one or more Local Zones.

Network Load Balancers

You can specify subnets from one or more Availability Zones.

Gateway Load Balancers

You can specify subnets from one or more Availability Zones.

Application Load Balancers on Outposts

The ID of the customer-owned address pool (CoIP pool).

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). Internal load balancers must use ipv4.

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.

The default is an Internet-facing load balancer.

You cannot specify a scheme for a Gateway Load Balancer.

The type of load balancer. The default is application.

The tags to assign to the load balancer.

The name of the load balancer.

This name must be unique per region per account, can have a maximum of 32 characters, must contain only alphanumeric characters or hyphens, must not begin or end with a hyphen, and must not begin with "internal-".

Information about the load balancer.

The response's http status code.

The Amazon Resource Name (ARN) of the listener.

The certificate to remove. You can specify one certificate per call. Set CertificateArn to the certificate ARN but do not set IsDefault.

The response's http status code.

The actions.

The conditions.

The Amazon Resource Name (ARN) of the rule.

Information about the modified rule.

The response's http status code.

The Amazon Resource Name (ARN) of the listener.

The certificate to add. You can specify one certificate per call. Set CertificateArn to the certificate ARN but do not set IsDefault.

Information about the certificates in the certificate list.

The response's http status code.

Application Load Balancer

Information for creating an action that returns a custom HTTP response. Specify only when Type is fixed-response.

The Amazon Resource Name (ARN) of the target group. Specify only when Type is forward and you want to route to a single target group. To route to one or more target groups, use ForwardConfig instead.

Information for creating an action that distributes requests among one or more target groups. For Network Load Balancers, you can specify a single target group. Specify only when Type is forward. If you specify both ForwardConfig and TargetGroupArn, you can specify only one target group using ForwardConfig and it must be the same target group specified in TargetGroupArn.

Application Load Balancer

Information for creating a redirect action. Specify only when Type is redirect.

HTTPS listeners

Information for using Amazon Cognito to authenticate users. Specify only when Type is authenticate-cognito.

The order for the action. This value is required for rules with multiple actions. The action with the lowest value for order is performed first.

HTTPS listeners

Information about an identity provider that is compliant with OpenID Connect (OIDC). Specify only when Type is authenticate-oidc.

The type of action.

The query parameters (up to 10) to include in the redirect request to the authorization endpoint.

The set of user claims to be requested from the IdP. The default is openid.

To verify which scope values your IdP supports and how to separate multiple values, see the documentation for your IdP.

The behavior if the user is not authenticated. The following are possible values:

• deny@@ - Return an HTTP 401 Unauthorized error.
• allow@@ - Allow the request to be forwarded to the target.
• authenticate@@ - Redirect the request to the IdP authorization endpoint. This is the default value.

The name of the cookie used to maintain session information. The default is AWSELBAuthSessionCookie.

The maximum duration of the authentication session, in seconds. The default is 604800 seconds (7 days).

The Amazon Resource Name (ARN) of the Amazon Cognito user pool.

The ID of the Amazon Cognito user pool client.

The domain prefix or fully-qualified domain name of the Amazon Cognito user pool.

The OAuth 2.0 client secret. This parameter is required if you are creating a rule. If you are modifying a rule, you can omit this parameter if you set UseExistingClientSecret to true.

Indicates whether to use the existing client secret when modifying a rule. If you are creating a rule, you can omit this parameter or set it to false.

The query parameters (up to 10) to include in the redirect request to the authorization endpoint.

The set of user claims to be requested from the IdP. The default is openid.

To verify which scope values your IdP supports and how to separate multiple values, see the documentation for your IdP.

The behavior if the user is not authenticated. The following are possible values:

• deny@@ - Return an HTTP 401 Unauthorized error.
• allow@@ - Allow the request to be forwarded to the target.
• authenticate@@ - Redirect the request to the IdP authorization endpoint. This is the default value.

The name of the cookie used to maintain session information. The default is AWSELBAuthSessionCookie.

The maximum duration of the authentication session, in seconds. The default is 604800 seconds (7 days).

The OIDC issuer identifier of the IdP. This must be a full URL, including the HTTPS protocol, the domain, and the path.

The authorization endpoint of the IdP. This must be a full URL, including the HTTPS protocol, the domain, and the path.

The token endpoint of the IdP. This must be a full URL, including the HTTPS protocol, the domain, and the path.

The user info endpoint of the IdP. This must be a full URL, including the HTTPS protocol, the domain, and the path.

The OAuth 2.0 client identifier.

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

The name of the Availability Zone.

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.

Application Load Balancers on Outposts

The ID of the Outpost.

The Amazon Resource Name (ARN) of the certificate.

Indicates whether the certificate is the default certificate. Do not set this value when specifying a certificate as an input. This value is not included in the output when describing a listener, but is included when describing listener certificates.

The priority of the cipher.

The name of the cipher.

The message.

The content type.

Valid Values: text/plain | text/css | text/html | application/javascript | application/json

The HTTP response code (2XX, 4XX, or 5XX).

One or more target groups. For Network Load Balancers, you can specify a single target group.

The target group stickiness for the rule.

One or more host names. The maximum size of each name is 128 characters. The comparison is case insensitive. The following wildcard characters are supported: * (matches 0 or more characters) and ? (matches exactly 1 character).

If you specify multiple strings, the condition is satisfied if one of the strings matches the host name.

One or more strings to compare against the value of the HTTP header. The maximum size of each string is 128 characters. The comparison strings are case insensitive. The following wildcard characters are supported: * (matches 0 or more characters) and ? (matches exactly 1 character).

If the same header appears multiple times in the request, we search them in order until a match is found.

If you specify multiple strings, the condition is satisfied if one of the strings matches the value of the HTTP header. To require that all of the strings are a match, create one condition per string.

The name of the HTTP header field. The maximum size is 40 characters. The header name is case insensitive. The allowed characters are specified by RFC 7230. Wildcards are not supported.

You can't use an HTTP header condition to specify the host header. Use HostHeaderConditionConfig to specify a host header condition.

The name of the request method. The maximum size is 40 characters. The allowed characters are A-Z, hyphen (-), and underscore (_). The comparison is case sensitive. Wildcards are not supported; therefore, the method name must be an exact match.

If you specify multiple strings, the condition is satisfied if one of the strings matches the HTTP request method. We recommend that you route GET and HEAD requests in the same way, because the response to a HEAD request may be cached.

The maximum value of the limit.

The name of the limit. The possible values are:

• application-load-balancers
• condition-values-per-alb-rule
• condition-wildcards-per-alb-rule
• gateway-load-balancers
• gateway-load-balancers-per-vpc
• geneve-target-groups
• listeners-per-application-load-balancer
• listeners-per-network-load-balancer
• network-load-balancers
• rules-per-application-load-balancer
• target-groups
• target-groups-per-action-on-application-load-balancer
• target-groups-per-action-on-network-load-balancer
• target-groups-per-application-load-balancer
• targets-per-application-load-balancer
• targets-per-availability-zone-per-gateway-load-balancer
• targets-per-availability-zone-per-network-load-balancer
• targets-per-network-load-balancer

HTTPS or TLS listener

The security policy that defines which protocols and ciphers are supported.

The Amazon Resource Name (ARN) of the listener.

The protocol for connections from clients to the load balancer.

The default actions for the listener.

HTTPS or TLS listener

The default certificate for the listener.

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

TLS listener

The name of the Application-Layer Protocol Negotiation (ALPN) policy.

The port on which the load balancer is listening.

The state of the load balancer.

The IDs of the security groups for the load balancer.

The name of the load balancer.

The date and time the load balancer was created.

The ID of the VPC for the load balancer.

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

The subnets for the load balancer.

Application Load Balancers on Outposts

The ID of the customer-owned address pool.

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

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).

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.

The type of load balancer.

The public DNS name of the load balancer.

Network Load Balancers

The IPv6 address.

The static IP address.

Network Load Balancers

The allocation ID of the Elastic IP address for an internal-facing load balancer.

Network Load Balancers

The private IPv4 address for an internal load balancer.

The value of the attribute.

The name of the attribute.

The following attribute is supported by all load balancers:

• deletion_protection.enabled - Indicates whether deletion protection is enabled. The value is true or false. The default is false.

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 is true or false. The default is false.
• 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.

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.
• routing.http.desync_mitigation_mode - Determines how the load balancer handles requests that might pose a security risk to your application. The possible values are monitor, defensive, and strictest. The default is defensive.
• 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 is false.
• routing.http.x_amzn_tls_version_and_cipher_suite.enabled - Indicates whether the two headers (x-amzn-tls-version and x-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. The x-amzn-tls-version header has information about the TLS protocol version negotiated with the client, and the x-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 are true and false. The default is false.
• routing.http.xff_client_port.enabled - Indicates whether the X-Forwarded-For header should preserve the source port that the client used to connect to the load balancer. The possible values are true and false. The default is false.
• routing.http2.enabled - Indicates whether HTTP/2 is enabled. The possible values are true and false. The default is true. 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 are true and false. The default is false.

The following attribute is supported by Network Load Balancers and Gateway Load Balancers:

• load_balancing.cross_zone.enabled - Indicates whether cross-zone load balancing is enabled. The possible values are true and false. The default is false.

A description of the state.

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 isactive_impaired. If the load balancer could not be set up, its state is failed.

For Application Load Balancers, you can specify values between 200 and 499, and the default value is 200. You can specify multiple values (for example, "200,202") or a range of values (for example, "200-299").

For Network Load Balancers and Gateway Load Balancers, this must be "200–399".

Note that when using shorthand syntax, some values such as commas need to be escaped.

You can specify values between 0 and 99. You can specify multiple values (for example, "0,1") or a range of values (for example, "0-5"). The default value is 12.

One or more path patterns to compare against the request URL. The maximum size of each string is 128 characters. The comparison is case sensitive. The following wildcard characters are supported: * (matches 0 or more characters) and ? (matches exactly 1 character).

If you specify multiple strings, the condition is satisfied if one of them matches the request URL. The path pattern is compared only to the path of the URL, not to its query string. To compare against the query string, use QueryStringConditionConfig.

One or more key/value pairs or values to find in the query string. The maximum size of each string is 128 characters. The comparison is case insensitive. The following wildcard characters are supported: * (matches 0 or more characters) and ? (matches exactly 1 character). To search for a literal '*' or '?' character in a query string, you must escape these characters in Values using a '\' character.

If you specify multiple key/value pairs or values, the condition is satisfied if one of them is found in the query string.

The value.

The key. You can omit the key.

The absolute path, starting with the leading "/". This component is not percent-encoded. The path can contain #{host}, #{path}, and #{port}.

The protocol. You can specify HTTP, HTTPS, or #{protocol}. You can redirect HTTP to HTTP, HTTP to HTTPS, and HTTPS to HTTPS. You cannot redirect HTTPS to HTTP.

The query parameters, URL-encoded when necessary, but not percent-encoded. Do not include the leading "?", as it is automatically added. You can specify any of the reserved keywords.

The hostname. This component is not percent-encoded. The hostname can contain #{host}.

The port. You can specify a value from 1 to 65535 or #{port}.

The HTTP redirect code. The redirect is either permanent (HTTP 301) or temporary (HTTP 302).

The priority.

The actions. Each rule must include exactly one of the following types of actions: forward, redirect, or fixed-response, and it must be the last action to be performed.

The conditions. Each rule can include zero or one of the following conditions: http-request-method, host-header, path-pattern, and source-ip, and zero or more of the following conditions: http-header and query-string.

The Amazon Resource Name (ARN) of the rule.

Indicates whether this is the default rule.

The field in the HTTP request. The following are the possible values:

• http-header

• http-request-method

• host-header

• path-pattern

• query-string

• source-ip

Information for an HTTP header condition. Specify only when Field is http-header.

Information for a host header condition. Specify only when Field is host-header.

The condition value. Specify only when Field is host-header or path-pattern. Alternatively, to specify multiple host names or multiple path patterns, use HostHeaderConfig or PathPatternConfig.

If Field is host-header and you are not using HostHeaderConfig, you can specify a single host name (for example, my.example.com) in Values. A host name is case insensitive, can be up to 128 characters in length, and can contain any of the following characters.

• A-Z, a-z, 0-9
• - .
• * (matches 0 or more characters)
• ? (matches exactly 1 character)

If Field is path-pattern and you are not using PathPatternConfig, you can specify a single path pattern (for example, /img/*) in Values. A path pattern is case-sensitive, can be up to 128 characters in length, and can contain any of the following characters.

• A-Z, a-z, 0-9
• _ - . $ / ~ " ' @ : +
• & (using &)
• * (matches 0 or more characters)
• ? (matches exactly 1 character)

Information for a source IP condition. Specify only when Field is source-ip.

Information for an HTTP method condition. Specify only when Field is http-request-method.

Information for a path pattern condition. Specify only when Field is path-pattern.

Information for a query string condition. Specify only when Field is query-string.

The rule priority.

The Amazon Resource Name (ARN) of the rule.

One or more source IP addresses, in CIDR format. You can use both IPv4 and IPv6 addresses. Wildcards are not supported.

If you specify multiple addresses, the condition is satisfied if the source IP address of the request matches one of the CIDR blocks. This condition is not satisfied by the addresses in the X-Forwarded-For header. To search for addresses in the X-Forwarded-For header, use HttpHeaderConditionConfig.

The supported load balancers.

The ciphers.

The name of the policy.

The protocols.

Network Load Balancers

The IPv6 address.

Network Load Balancers

The allocation ID of the Elastic IP address for an internet-facing load balancer.

Network Load Balancers

The private IPv4 address for an internal load balancer.

The ID of the subnet.

The value of the tag.

The key of the tag.

The Amazon Resource Name (ARN) of the resource.

Information about the tags.

An Availability Zone or all. This determines whether the target receives traffic from the load balancer nodes in the specified Availability Zone or from all enabled Availability Zones for the load balancer.

This parameter is not supported if the target type of the target group is instance or alb.

If the target type is ip and the IP address is in a subnet of the VPC for the target group, the Availability Zone is automatically detected and this parameter is optional. If the IP address is outside the VPC, this parameter is required.

With an Application Load Balancer, if the target type is ip and the IP address is outside the VPC for the target group, the only supported value is all.

If the target type is lambda, this parameter is optional and the only supported value is all.

The port on which the target is listening. If the target group protocol is GENEVE, the supported port is 6081. If the target type is alb, the targeted Application Load Balancer must have at least one listener whose port matches the target group port. Not used if the target is a Lambda function.

The ID of the target. If the target type of the target group is instance, specify an instance ID. If the target type is ip, specify an IP address. If the target type is lambda, specify the ARN of the Lambda function. If the target type is alb, specify the ARN of the Application Load Balancer target.

HTTP/HTTPS protocol

The protocol version. The possible values are GRPC, HTTP1, and HTTP2.

The HTTP or gRPC codes to use when checking for a successful response from a target.

The destination for health checks on the targets.

Indicates whether health checks are enabled.

The number of consecutive health check failures required before considering the target unhealthy.

The ID of the VPC for the targets.

The Amazon Resource Name (ARN) of the target group.

The protocol to use for routing traffic to the targets.

The approximate amount of time, in seconds, between health checks of an individual target.

The type of target that you must specify when registering targets with this target group. The possible values are instance (register targets by instance ID), ip (register targets by IP address), lambda (register a single Lambda function as a target), or alb (register a single Application Load Balancer as a target).

The number of consecutive health checks successes required before considering an unhealthy target healthy.

The protocol to use to connect with the target. The GENEVE, TLS, UDP, and TCP_UDP protocols are not supported for health checks.

The Amazon Resource Names (ARN) of the load balancers that route traffic to this target group.

The type of IP address used for this target group. The possible values are ipv4 and ipv6. This is an optional parameter. If not specified, the IP address type defaults to ipv4.

The amount of time, in seconds, during which no response means a failed health check.

The port to use to connect with the target.

The name of the target group.

The port on which the targets are listening. Not used if the target is a Lambda function.

The value of the attribute.

The name of the attribute.

The following attribute is supported by all load balancers:

• deregistration_delay.timeout_seconds - The amount of time, in seconds, for Elastic Load Balancing to wait before changing the state of a deregistering target from draining to unused. The range is 0-3600 seconds. The default value is 300 seconds. If the target is a Lambda function, this attribute is not supported.

The following attributes are supported by both Application Load Balancers and Network Load Balancers:

• stickiness.enabled - Indicates whether sticky sessions are enabled. The value is true or false. The default is false.
• stickiness.type - The type of sticky sessions. The possible values are lb_cookie and app_cookie for Application Load Balancers or source_ip for Network Load Balancers.

The following attributes are supported only if the load balancer is an Application Load Balancer and the target is an instance or an IP address:

• load_balancing.algorithm.type - The load balancing algorithm determines how the load balancer selects targets when routing requests. The value is round_robin or least_outstanding_requests. The default is round_robin.
• slow_start.duration_seconds - The time period, in seconds, during which a newly registered target receives an increasing share of the traffic to the target group. After this time period ends, the target receives its full share of traffic. The range is 30-900 seconds (15 minutes). The default is 0 seconds (disabled).
• stickiness.app_cookie.cookie_name - Indicates the name of the application-based cookie. Names that start with the following prefixes are not allowed: AWSALB, AWSALBAPP, and AWSALBTG; they're reserved for use by the load balancer.
• stickiness.app_cookie.duration_seconds - The time period, in seconds, during which requests from a client should be routed to the same target. After this time period expires, the application-based cookie is considered stale. The range is 1 second to 1 week (604800 seconds). The default value is 1 day (86400 seconds).
• stickiness.lb_cookie.duration_seconds - The time period, in seconds, during which requests from a client should be routed to the same target. After this time period expires, the load balancer-generated cookie is considered stale. The range is 1 second to 1 week (604800 seconds). The default value is 1 day (86400 seconds).

The following attribute is supported only if the load balancer is an Application Load Balancer and the target is a Lambda function:

• lambda.multi_value_headers.enabled - Indicates whether the request and response headers that are exchanged between the load balancer and the Lambda function include arrays of values or strings. The value is true or false. The default is false. If the value is false and the request contains a duplicate header field name or query parameter key, the load balancer uses the last value sent by the client.

The following attributes are supported only by Network Load Balancers:

• deregistration_delay.connection_termination.enabled - Indicates whether the load balancer terminates connections at the end of the deregistration timeout. The value is true or false. The default is false.
• preserve_client_ip.enabled - Indicates whether client IP preservation is enabled. The value is true or false. The default is disabled if the target group type is IP address and the target group protocol is TCP or TLS. Otherwise, the default is enabled. Client IP preservation cannot be disabled for UDP and TCP_UDP target groups.
• proxy_protocol_v2.enabled - Indicates whether Proxy Protocol version 2 is enabled. The value is true or false. The default is false.

Indicates whether target group stickiness is enabled.

The time period, in seconds, during which requests from a client should be routed to the same target group. The range is 1-604800 seconds (7 days).

The weight. The range is 0 to 999.

The Amazon Resource Name (ARN) of the target group.

The state of the target.

The reason code.

If the target state is healthy, a reason code is not provided.

If the target state is initial, the reason code can be one of the following values:

• Elb.RegistrationInProgress - The target is in the process of being registered with the load balancer.
• Elb.InitialHealthChecking - The load balancer is still sending the target the minimum number of health checks required to determine its health status.

If the target state is unhealthy, the reason code can be one of the following values:

• Target.ResponseCodeMismatch - The health checks did not return an expected HTTP code. Applies only to Application Load Balancers and Gateway Load Balancers.
• Target.Timeout - The health check requests timed out. Applies only to Application Load Balancers and Gateway Load Balancers.
• Target.FailedHealthChecks - The load balancer received an error while establishing a connection to the target or the target response was malformed.
• Elb.InternalError - The health checks failed due to an internal error. Applies only to Application Load Balancers.

If the target state is unused, the reason code can be one of the following values:

• Target.NotRegistered - The target is not registered with the target group.
• Target.NotInUse - The target group is not used by any load balancer or the target is in an Availability Zone that is not enabled for its load balancer.
• Target.InvalidState - The target is in the stopped or terminated state.
• Target.IpUnusable - The target IP address is reserved for use by a load balancer.

If the target state is draining, the reason code can be the following value:

• Target.DeregistrationInProgress - The target is in the process of being deregistered and the deregistration delay period has not expired.

If the target state is unavailable, the reason code can be the following value:

• Target.HealthCheckDisabled - Health checks are disabled for the target group. Applies only to Application Load Balancers.
• Elb.InternalError - Target health is unavailable due to an internal error. Applies only to Network Load Balancers.

A description of the target health that provides additional details. If the state is healthy, a description is not provided.

The health information for the target.

The port to use to connect with the target.

The description of the target.