AWS API Changes

2020/10/29 - Elastic Load Balancing - 3 updated api methods

Changes Application Load Balancer (ALB) now supports the gRPC protocol-version. With this release, customers can use ALB to route and load balance gRPC traffic between gRPC enabled clients and microservices.

CreateTargetGroup (updated)

Link ¶
Changes (request, response)
Request

{'Matcher': {'GrpcCode': 'string'}, 'ProtocolVersion': 'string'}

Response

{'TargetGroups': {'Matcher': {'GrpcCode': 'string'},
                  'ProtocolVersion': 'string'}}

Creates a target group.

To register targets with the target group, use RegisterTargets. To update the health check settings for the target group, use ModifyTargetGroup. To monitor the health of targets in the target group, use DescribeTargetHealth.

To route traffic to the targets in a target group, specify the target group in an action using CreateListener or CreateRule.

To delete a target group, use DeleteTargetGroup.

This operation is idempotent, which means that it completes at most one time. If you attempt to create multiple target groups with the same settings, each call succeeds.

For more information, see Target Groups for Your Application Load Balancers in the Application Load Balancers Guide or Target Groups for Your Network Load Balancers in the Network Load Balancers Guide .

See also: AWS API Documentation

Request Syntax

client.create_target_group(
    Name='string',
    Protocol='HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
    ProtocolVersion='string',
    Port=123,
    VpcId='string',
    HealthCheckProtocol='HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
    HealthCheckPort='string',
    HealthCheckEnabled=True|False,
    HealthCheckPath='string',
    HealthCheckIntervalSeconds=123,
    HealthCheckTimeoutSeconds=123,
    HealthyThresholdCount=123,
    UnhealthyThresholdCount=123,
    Matcher={
        'HttpCode': 'string',
        'GrpcCode': 'string'
    },
    TargetType='instance'|'ip'|'lambda',
    Tags=[
        {
            'Key': 'string',
            'Value': 'string'
        },
    ]
)

type Name

string

param Name

[REQUIRED]

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.

type Protocol

string

param Protocol

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. 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.

type ProtocolVersion

string

param ProtocolVersion

[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.

type Port

integer

param Port

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.

type VpcId

string

param VpcId

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.

type HealthCheckProtocol

string

param HealthCheckProtocol

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

type HealthCheckPort

string

param HealthCheckPort

The port the load balancer uses when performing health checks on targets. The default is traffic-port , which is the port on which each target receives traffic from the load balancer.

type HealthCheckEnabled

boolean

param HealthCheckEnabled

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 or ip , health checks are always enabled and cannot be disabled.

type HealthCheckPath

string

param HealthCheckPath

[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 /AWS.ALB/healthcheck.

type HealthCheckIntervalSeconds

integer

param HealthCheckIntervalSeconds

The approximate amount of time, in seconds, between health checks of an individual target. For HTTP and HTTPS health checks, the range is 5–300 seconds. For TCP health checks, the supported values are 10 and 30 seconds. If the target type is instance or ip , the default is 30 seconds. If the target type is lambda , the default is 35 seconds.

type HealthCheckTimeoutSeconds

integer

param HealthCheckTimeoutSeconds

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 or HTTPS, 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.

type HealthyThresholdCount

integer

param HealthyThresholdCount

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 or TLS, the default is 3. If the target type is lambda , the default is 5.

type UnhealthyThresholdCount

integer

param UnhealthyThresholdCount

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

type Matcher

dict

param Matcher

[HTTP/HTTPS health checks] The HTTP or gRPC codes to use when checking for a successful response from a target.

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, this is "200–399".
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.

type TargetType

string

param TargetType

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 - Targets are specified by instance ID. This is the default value.
ip - Targets are specified 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 - The target groups contains a single Lambda function.

type Tags

list

param Tags

The tags to assign to the target group.

(dict) --

Information about a tag.
- Key (string) -- [REQUIRED]
  
  The key of the tag.
- Value (string) --
  
  The value of the tag.

rtype

dict

returns

Response Syntax

{
    'TargetGroups': [
        {
            'TargetGroupArn': 'string',
            'TargetGroupName': 'string',
            'Protocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'Port': 123,
            'VpcId': 'string',
            'HealthCheckProtocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'HealthCheckPort': 'string',
            'HealthCheckEnabled': True|False,
            'HealthCheckIntervalSeconds': 123,
            'HealthCheckTimeoutSeconds': 123,
            'HealthyThresholdCount': 123,
            'UnhealthyThresholdCount': 123,
            'HealthCheckPath': 'string',
            'Matcher': {
                'HttpCode': 'string',
                'GrpcCode': 'string'
            },
            'LoadBalancerArns': [
                'string',
            ],
            'TargetType': 'instance'|'ip'|'lambda',
            'ProtocolVersion': 'string'
        },
    ]
}

Response Structure

(dict) --
- TargetGroups (list) --
  
  Information about the target group.
  - (dict) --
    
    Information about a target group.
    - TargetGroupArn (string) --
      
      The Amazon Resource Name (ARN) of the target group.
    - TargetGroupName (string) --
      
      The name of the target group.
    - Protocol (string) --
      
      The protocol to use for routing traffic to the targets.
    - Port (integer) --
      
      The port on which the targets are listening. Not used if the target is a Lambda function.
    - VpcId (string) --
      
      The ID of the VPC for the targets.
    - HealthCheckProtocol (string) --
      
      The protocol to use to connect with the target.
    - HealthCheckPort (string) --
      
      The port to use to connect with the target.
    - HealthCheckEnabled (boolean) --
      
      Indicates whether health checks are enabled.
    - HealthCheckIntervalSeconds (integer) --
      
      The approximate amount of time, in seconds, between health checks of an individual target.
    - HealthCheckTimeoutSeconds (integer) --
      
      The amount of time, in seconds, during which no response means a failed health check.
    - HealthyThresholdCount (integer) --
      
      The number of consecutive health checks successes required before considering an unhealthy target healthy.
    - UnhealthyThresholdCount (integer) --
      
      The number of consecutive health check failures required before considering the target unhealthy.
    - HealthCheckPath (string) --
      
      The destination for health checks on the targets.
    - Matcher (dict) --
      
      The HTTP or gRPC codes to use when checking for a successful response from a target.
      - 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, this is "200–399".
      - 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.
    - LoadBalancerArns (list) --
      
      The Amazon Resource Names (ARN) of the load balancers that route traffic to this target group.
      - (string) --
    - TargetType (string) --
      
      The type of target that you must specify when registering targets with this target group. The possible values are instance (targets are specified by instance ID) or ip (targets are specified by IP address).
    - ProtocolVersion (string) --
      
      [HTTP/HTTPS protocol] The protocol version. The possible values are GRPC , HTTP1 , and HTTP2 .

DescribeTargetGroups (updated)

Link ¶
Changes (response)

{'TargetGroups': {'Matcher': {'GrpcCode': 'string'},
                  'ProtocolVersion': 'string'}}

Describes the specified target groups or all of your target groups. By default, all target groups are described. Alternatively, you can specify one of the following to filter the results: the ARN of the load balancer, the names of one or more target groups, or the ARNs of one or more target groups.

To describe the targets for a target group, use DescribeTargetHealth. To describe the attributes of a target group, use DescribeTargetGroupAttributes.

See also: AWS API Documentation

Request Syntax

client.describe_target_groups(
    LoadBalancerArn='string',
    TargetGroupArns=[
        'string',
    ],
    Names=[
        'string',
    ],
    Marker='string',
    PageSize=123
)

type LoadBalancerArn

string

param LoadBalancerArn

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

type TargetGroupArns

list

param TargetGroupArns

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

(string) --

type Names

list

param Names

The names of the target groups.

(string) --

type Marker

string

param Marker

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

type PageSize

integer

param PageSize

The maximum number of results to return with this call.

rtype

dict

returns

Response Syntax

{
    'TargetGroups': [
        {
            'TargetGroupArn': 'string',
            'TargetGroupName': 'string',
            'Protocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'Port': 123,
            'VpcId': 'string',
            'HealthCheckProtocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'HealthCheckPort': 'string',
            'HealthCheckEnabled': True|False,
            'HealthCheckIntervalSeconds': 123,
            'HealthCheckTimeoutSeconds': 123,
            'HealthyThresholdCount': 123,
            'UnhealthyThresholdCount': 123,
            'HealthCheckPath': 'string',
            'Matcher': {
                'HttpCode': 'string',
                'GrpcCode': 'string'
            },
            'LoadBalancerArns': [
                'string',
            ],
            'TargetType': 'instance'|'ip'|'lambda',
            'ProtocolVersion': 'string'
        },
    ],
    'NextMarker': 'string'
}

Response Structure

(dict) --
- TargetGroups (list) --
  
  Information about the target groups.
  - (dict) --
    
    Information about a target group.
    - TargetGroupArn (string) --
      
      The Amazon Resource Name (ARN) of the target group.
    - TargetGroupName (string) --
      
      The name of the target group.
    - Protocol (string) --
      
      The protocol to use for routing traffic to the targets.
    - Port (integer) --
      
      The port on which the targets are listening. Not used if the target is a Lambda function.
    - VpcId (string) --
      
      The ID of the VPC for the targets.
    - HealthCheckProtocol (string) --
      
      The protocol to use to connect with the target.
    - HealthCheckPort (string) --
      
      The port to use to connect with the target.
    - HealthCheckEnabled (boolean) --
      
      Indicates whether health checks are enabled.
    - HealthCheckIntervalSeconds (integer) --
      
      The approximate amount of time, in seconds, between health checks of an individual target.
    - HealthCheckTimeoutSeconds (integer) --
      
      The amount of time, in seconds, during which no response means a failed health check.
    - HealthyThresholdCount (integer) --
      
      The number of consecutive health checks successes required before considering an unhealthy target healthy.
    - UnhealthyThresholdCount (integer) --
      
      The number of consecutive health check failures required before considering the target unhealthy.
    - HealthCheckPath (string) --
      
      The destination for health checks on the targets.
    - Matcher (dict) --
      
      The HTTP or gRPC codes to use when checking for a successful response from a target.
      - 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, this is "200–399".
      - 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.
    - LoadBalancerArns (list) --
      
      The Amazon Resource Names (ARN) of the load balancers that route traffic to this target group.
      - (string) --
    - TargetType (string) --
      
      The type of target that you must specify when registering targets with this target group. The possible values are instance (targets are specified by instance ID) or ip (targets are specified by IP address).
    - ProtocolVersion (string) --
      
      [HTTP/HTTPS protocol] The protocol version. The possible values are GRPC , HTTP1 , and HTTP2 .
- NextMarker (string) --
  
  If there are additional results, this is the marker for the next set of results. Otherwise, this is null.

ModifyTargetGroup (updated)

Link ¶
Changes (request, response)
Request

{'Matcher': {'GrpcCode': 'string'}}

Response

{'TargetGroups': {'Matcher': {'GrpcCode': 'string'},
                  'ProtocolVersion': 'string'}}

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

To monitor the health of the targets, use DescribeTargetHealth.

See also: AWS API Documentation

Request Syntax

client.modify_target_group(
    TargetGroupArn='string',
    HealthCheckProtocol='HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
    HealthCheckPort='string',
    HealthCheckPath='string',
    HealthCheckEnabled=True|False,
    HealthCheckIntervalSeconds=123,
    HealthCheckTimeoutSeconds=123,
    HealthyThresholdCount=123,
    UnhealthyThresholdCount=123,
    Matcher={
        'HttpCode': 'string',
        'GrpcCode': 'string'
    }
)

type TargetGroupArn

string

param TargetGroupArn

[REQUIRED]

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

type HealthCheckProtocol

string

param HealthCheckProtocol

The protocol the load balancer uses when performing health checks on targets. The TCP protocol is supported for health checks only if the protocol of the target group is TCP, TLS, UDP, or TCP_UDP. The TLS, UDP, and TCP_UDP protocols are not supported for health checks.

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

type HealthCheckPort

string

param HealthCheckPort

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

type HealthCheckPath

string

param HealthCheckPath

[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 /AWS.ALB/healthcheck.

type HealthCheckEnabled

boolean

param HealthCheckEnabled

Indicates whether health checks are enabled.

type HealthCheckIntervalSeconds

integer

param HealthCheckIntervalSeconds

The approximate amount of time, in seconds, between health checks of an individual target. For HTTP and HTTPS health checks, the range is 5 to 300 seconds. For TPC health checks, the supported values are 10 or 30 seconds.

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

type HealthCheckTimeoutSeconds

integer

param HealthCheckTimeoutSeconds

[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.

type HealthyThresholdCount

integer

param HealthyThresholdCount

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

type UnhealthyThresholdCount

integer

param UnhealthyThresholdCount

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.

type Matcher

dict

param Matcher

[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, this is "200–399".
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.

rtype

dict

returns

Response Syntax

{
    'TargetGroups': [
        {
            'TargetGroupArn': 'string',
            'TargetGroupName': 'string',
            'Protocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'Port': 123,
            'VpcId': 'string',
            'HealthCheckProtocol': 'HTTP'|'HTTPS'|'TCP'|'TLS'|'UDP'|'TCP_UDP',
            'HealthCheckPort': 'string',
            'HealthCheckEnabled': True|False,
            'HealthCheckIntervalSeconds': 123,
            'HealthCheckTimeoutSeconds': 123,
            'HealthyThresholdCount': 123,
            'UnhealthyThresholdCount': 123,
            'HealthCheckPath': 'string',
            'Matcher': {
                'HttpCode': 'string',
                'GrpcCode': 'string'
            },
            'LoadBalancerArns': [
                'string',
            ],
            'TargetType': 'instance'|'ip'|'lambda',
            'ProtocolVersion': 'string'
        },
    ]
}

Response Structure

(dict) --
- TargetGroups (list) --
  
  Information about the modified target group.
  - (dict) --
    
    Information about a target group.
    - TargetGroupArn (string) --
      
      The Amazon Resource Name (ARN) of the target group.
    - TargetGroupName (string) --
      
      The name of the target group.
    - Protocol (string) --
      
      The protocol to use for routing traffic to the targets.
    - Port (integer) --
      
      The port on which the targets are listening. Not used if the target is a Lambda function.
    - VpcId (string) --
      
      The ID of the VPC for the targets.
    - HealthCheckProtocol (string) --
      
      The protocol to use to connect with the target.
    - HealthCheckPort (string) --
      
      The port to use to connect with the target.
    - HealthCheckEnabled (boolean) --
      
      Indicates whether health checks are enabled.
    - HealthCheckIntervalSeconds (integer) --
      
      The approximate amount of time, in seconds, between health checks of an individual target.
    - HealthCheckTimeoutSeconds (integer) --
      
      The amount of time, in seconds, during which no response means a failed health check.
    - HealthyThresholdCount (integer) --
      
      The number of consecutive health checks successes required before considering an unhealthy target healthy.
    - UnhealthyThresholdCount (integer) --
      
      The number of consecutive health check failures required before considering the target unhealthy.
    - HealthCheckPath (string) --
      
      The destination for health checks on the targets.
    - Matcher (dict) --
      
      The HTTP or gRPC codes to use when checking for a successful response from a target.
      - 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, this is "200–399".
      - 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.
    - LoadBalancerArns (list) --
      
      The Amazon Resource Names (ARN) of the load balancers that route traffic to this target group.
      - (string) --
    - TargetType (string) --
      
      The type of target that you must specify when registering targets with this target group. The possible values are instance (targets are specified by instance ID) or ip (targets are specified by IP address).
    - ProtocolVersion (string) --
      
      [HTTP/HTTPS protocol] The protocol version. The possible values are GRPC , HTTP1 , and HTTP2 .