This topic describes the fields in the Layer 7 access logs of Classic Load Balancer (CLB).
Field | Description |
body_bytes_sent | The size of the HTTP response body. Unit: bytes. |
client_ip | The client IP address. |
client_port | The port number of the client that sends the request. |
host | By default, the value is retrieved from the request parameters. If the host is not specified in the request parameters, the system retrieves the value from the Host header. If this value cannot be retrieved from the request parameters or the Host header, the IP address of the backend server is used. |
http_host | The Host header of the HTTP request. |
http_referer | The Referer header of the HTTP request received by CLB. |
http_user_agent | The Http_User_Agent header of the HTTP request. |
http_x_forwarded_for | The X-Forwarded-For header of the HTTP request. |
http_x_real_ip | The real client IP address. |
read_request_time | The amount of time that CLB takes to process the request. Unit: milliseconds. |
request_length | The length of the request, including the start line, request headers, and the request body. |
request_method | The request method. |
request_time | The time duration between when CLB receives the first request and when CLB returns the response. Unit: seconds. |
request_uri | The URI of the request received by CLB. |
scheme | The scheme of the request. Valid values: HTTP and HTTPS. |
server_protocol | The version of the HTTP protocol that is received by CLB. For example, HTTP/1.0 or HTTP/1.1. |
slb_vport | The listener port of the ALB instance. |
slbid | The ID of the ALB instance. |
ssl_cipher | The cipher suite used to establish an SSL connection. Example: ECDHE-RSA-AES128-GCM-SHA256. |
ssl_protocol | The protocol that is used to establish an SSL connection, for example, TLS 1.2. |
status | The status of the response returned by CLB. |
tcpinfo_rtt | The amount of time that is taken to establish a TCP connection. Unit: milliseconds. |
time | The time when the log entry was generated. |
upstream_addr | The IP address and port of the backend server. |
upstream_response_time | The amount of time from when a connection is established to when the connection is closed. Unit: seconds. |
upstream_status | The HTTP status code sent from a backend server to CLB. |
vip_addr | The virtual IP address. |
write_response_time | The amount of time that is taken to respond to the write request. Unit: milliseconds. |