Log fields

Back-end messages log the following keys. Some fields may be left out when there is no value available, others may write "<n/a>" instead.

Field Name

Description

req_id

ID of the request

sess_id

ID of the session the request belongs to

corr_id

Request correlation ID

corr_id_2

Second request correlation ID

corr_id_3

Third request correlation ID

mapping

Mapping name used to handle the request

vhost

The FQDN of the virtual host

vhost_ip

The IP address the virtual host is listening on

vhost_port

The port the virtual host is listening on

vhost_proto

The HTTP protocol used in the request

back_host

The back-end host the request was sent to

back_host_ip

The IP address of the back-end host the request was sent to

back_host_port

The port of the back-end host the request was sent to

back_host_proto

The protocol of the back-end host the request was sent to

error_code

The error code returned by libcurl

message

Message describing the log event