This document provides you an overview about logs and metrics generated by external Application Load Balancers.
To learn how to configure and use Cloud Logging and Cloud Monitoring, list of metrics, log record formats, and other information, refer to the following pages:
- Global external Application Load Balancer and classic Application Load Balancer logging and monitoring.
- Regional external Application Load Balancer logging and monitoring.
Monitoring features
The following table indicates the monitoring features supported by external Application Load Balancers:
| Feature | External HTTP(S) | ||
|---|---|---|---|
| Global | Classic | Regional | |
| HTTP request count metrics | info | info | info |
| Byte count metrics | info | info | info |
| Round trip time (RTT) metrics | info | info | |
| Request latency metrics | info | info | info |
Logging features
The following table indicates the logging features supported by external Application Load Balancers:
| Feature | External HTTP(S) | |||||||
|---|---|---|---|---|---|---|---|---|
| Global | Classic | Regional | ||||||
| Log type | ||||||||
| HTTP request and response attribute logs | info | info | info | |||||
| HTTP request | info | info | info | |||||
| Log fields | ||||||||
| String which explains the proxy response | statusDetails | statusDetails | proxyStatus | |||||
| TLS metadata between client and load balancer | info | |||||||
| Labels describing the load balancer resource | info | info | info | |||||
Monitoring resources
The monitoring resources for global external Application Load Balancer and classic Application Load Balancer are the same. The following table specifies the resource names for external Application Load Balancers in each mode:
| External HTTP(S) | |||
|---|---|---|---|
| Global | Classic | Regional | |
| Logging monitored-resource type | "Application Load Balancer"
http_load_balancer |
"Regional External Application Load Balancer Rule"
http_external_regional_lb_rule |
|
| Monitoring monitored-resource type | "Application Load Balancer Rule" (Logs-based Metrics)
l7_lb_rule |
"Regional External Application Load Balancer Rule"
http_external_regional_lb_rule |
|
"Global External Application Load Balancer Rule"
https_lb_rule |
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What's next
- Read conceptual information about external Application Load Balancers.
- Interactive walkthrough to view and analyze log entries for global external Application Load Balancers.
- Interactive walkthrough to create alerting policies for global external Application Load Balancers.