modify-target-group — AWS CLI 2.4.19 Command Reference

Description

Modifies the health checks used when evaluating the health state of the targets in the specified target group.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Options

--target-group-arn (string)

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

--health-check-protocol (string)

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.

Possible values:

• HTTP

• HTTPS

• TCP

• TLS

• UDP

• TCP_UDP

• GENEVE

--health-check-port (string)

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

--health-check-path (string)

[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 / The default is /Amazon Web

--health-check-enabled | --no-health-check-enabled (boolean)

Indicates whether health checks are enabled.

--health-check-interval-seconds (integer)

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.

--health-check-timeout-seconds (integer)

[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.

--healthy-threshold-count (integer)

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

--unhealthy-threshold-count (integer)

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.

--matcher (structure)

[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.

HttpCode -> (string)

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.

GrpcCode -> (string)

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.

Shorthand Syntax:

HttpCode=string,GrpcCode=string

JSON Syntax:

{ "HttpCode": "string", "GrpcCode": "string"}

--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.

See ‘aws help’ for descriptions of global parameters.

Examples

To modify the health check configuration for a target group

This example changes the configuration of the health checks used to evaluate the health of the targets for the specified target group.

Command:

aws elbv2 modify-target-group --target-group-arn arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-https-targets/2453ed029918f21f --health-check-protocol HTTPS --health-check-port 443

Output:

{ "TargetGroups": [ { "HealthCheckIntervalSeconds": 30, "VpcId": "vpc-3ac0fb5f", "Protocol": "HTTPS", "HealthCheckTimeoutSeconds": 5, "HealthCheckProtocol": "HTTPS", "LoadBalancerArns": [ "arn:aws:elasticloadbalancing:us-west-2:123456789012:loadbalancer/app/my-load-balancer/50dc6c495c0c9188" ], "UnhealthyThresholdCount": 2, "HealthyThresholdCount": 5, "TargetGroupArn": "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-https-targets/2453ed029918f21f", "Matcher": { "HttpCode": "200" }, "HealthCheckPort": "443", "Port": 443, "TargetGroupName": "my-https-targets" } ]}