Log Analysis

Scenario

Prerequisites

Procedure

1. Log in to the management console.
2. Click in the upper left corner and choose API Gateway.
3. In the navigation pane, choose Dedicated Gateways. Then click Access Console in the upper right corner of a dedicated gateway.
4. Choose API Calling > Access Logs, and click Configure Log Collection.
5. Enable log collection ().
6. Specify a log group and log stream, and click OK. For details about log groups and log streams, see section "Log Management" in the Log Tank Service User Guide.
7. Click Log Fields to view the description of each log field. Then view and analyze logs by referring to the log field descriptions.
8. To export logs, see section "Log Transfer" in the Log Tank Service User Guide.

   Fields in access logs are separated using spaces. The following table describes each log field.

   Table 1 Log field description

   No.	Field	Description
   1	remote_addr	Client IP address
   2	request_id	Request ID
   3	api_id	API ID
   4	user_id	Project ID provided by a requester for IAM authentication
   5	app_id	App ID provided by a requester for app-based authentication
   6	time_local	Time when a request is received
   7	request_time	Request latency
   8	request_method	HTTP request method
   9	host	Domain name
   10	router_uri	Request URI
   11	server_protocol	Request protocol
   12	status	Response status code
   13	bytes_sent	Response size in bytes, including the status line, header, and body.
   14	request_length	Request length in bytes, including the start line, header, and body.
   15	http_user_agent	User agent ID
   16	http_x_forwarded_for	X-Forwarded-For header field
   17	upstream_addr	Backend address
   18	upstream_uri	Backend URI
   19	upstream_status	Backend response code
   20	upstream_connect_time	Time taken for establishing a connection with the backend
   21	upstream_header_time	Duration from the beginning of the establishment of a connection to receiving the first byte from the backend
   22	upstream_response_time	Duration from the beginning of the establishment of a connection to receiving the last byte from the backend
   23	region_id	Region ID
   24	all_upstream_response_time	Duration (seconds) from the beginning of the establishment of a connection to receiving the last byte from the backend. When a retry occurs, the value is the total time used.
   25	errorType	Request error type. Options: 0: non-throttling error 1: throttling error
   26	auth_type	API authentication mode
   27	access_model1	Authentication mode 1
   28	access_model2	Authentication mode 2. When two-factor authentication is enabled, the custom authorizer ID is used.
   29	inner_time	Internal processing duration of APIG, in seconds
   30	proxy_protocol_vni	VPC endpoint virtual network ID
   31	proxy_protocol_vpce_id	VPC endpoint ID
   32	proxy_protocol_addr	Client IP address
   33	body_bytes_sent	Size of the API request body, in bytes
   34	api_name	API name
   35	app_name	Name of the app used by the requester when app authentication is used
   36	provider_app_id	ID of the app to which the API belongs
   37	provider_app_name	Name of the app to which the API belongs
   38	custom_data_log1	Custom log field 1
   39	custom_data_log2	Custom log field 2
   40	custom_data_log3	Custom log field 3
   41	custom_data_log4	Custom log field 4
   42	custom_data_log5	Custom log field 5
   43	custom_data_log6	Custom log field 6
   44	custom_data_log7	Custom log field 7
   45	custom_data_log8	Custom log field 8
   46	custom_data_log9	Custom log field 9
   47	custom_data_log10	Custom log field 10
   48	response_source	Response source. Options: local: APIG remote: backend service