# Elastic Application Load Balancing (ALB)

Application Load Balancer is best suited for load balancing of HTTP and HTTPS traffic and provides advanced request routing targeted at the delivery of modern application architectures, including microservices and containers. For more information, refer to the Elastic Application Load Balancer documentation.

## aws.alb.ActiveConnectionCount

The total number of concurrent TCP connections active from clients to the load balancer and from the load balancer to the targets.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.ClientTLSNegotiationErrorCount

The number of TLS connections initiated by the client that did not establish a session with the load balancer.

Possible causes include a mismatch of ciphers or protocols.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.ConsumedLCUs

The number of load balancer capacity units (LCU) used by the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_ELB_4XX_Count

The number of HTTP 4XX client error codes that originate form the load balancer. Client errors are generated when requests are malformed or incomplete. These requests have not been received by the target.

This count does not include any response codes generated by the targets.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_ELB_5XX_Count

The number of HTTP 5XX server error codes that originate from the load balancer. Server errors are generated when requests are malformed or incomplete. These requests have not been received by the target.

This count does not include any response codes generated by the targets.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_Target_2XX_Count

The number of HTTP 2XX response codes generated by the target.

This count does not include any response codes generated by the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_Target_3XX_Count

The number of HTTP 3XX response codes generated by the target.

This count does not include any response codes generated by the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_Target_4XX_Count

The number of HTTP 4XX response codes generated by the target.

This count does not include any response codes generated by the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HTTPCode_Target_5XX_Count

The number of HTTP 5XX response codes generated by the target.

This count does not include any response codes generated by the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.HealthyHostCount

The number of targets that are considered healthy.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.IPv6ProcessedBytes

The total number of bytes processed by the load balancer over IPv6.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.IPv6RequestCount

The total number of data requested by the load balancer over IPv6.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.NewConnectionCount

The total number of new TCP connections established from clients to the load balancer and from the load balancer to targets.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.ProcessedBytes

The total number of bytes processed by the load balancer over IPv4 and IPv6.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.RejectedConnectionCount

The number of connections that were rejected because the load balancer had reached its maximum number of connections.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.RequestCount

The number of requests processed over IPv4 and IPv6. This count only includes the requests with a response generated by a target of the load balancer.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.RequestCountPerTarget

The average number of requests received by each target in a target group.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.RuleEvaluations

The number of rules processed by the load balancer given a request rate averaged over an hour.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.TargetConnectionErrorCount

The number of connections that were not successfully established between the load balancer and target.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.TargetResponseTime

The time elapsed, in seconds, after the request leaves the load balancer until a response from the target is received.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.TargetTLSNegotiationErrorCount

The number of TLS connections initiated by the load balancer that did not establish a session with the target.

Possible causes include a mismatch of ciphers or protocols.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |

## aws.alb.UnHealthyHostCount

The number of targets that are considered unhealthy.

Metadata | Description |
---|---|

Metric Type | Counter |

Value Type | Integer |

Segment By | CloudProvider |

Default Time Aggregation | Rate |

Available Time Aggregation Formats | Avg, Rate, Sum, Min, Max |

Default Group Aggregation | Sum |

Available Group Aggregation Formats | Avg, Sum, Min, Max |