This topic describes the fields in the Layer 7 access logs of Server Load Balancer (SLB).
Field | Description |
__topic__ | The topic of the log. The value is fixed as slb_layer7_access_log. |
owner_id | The ID of the Alibaba Cloud account to which the SLB instance belongs. |
region | The region where the SLB instance resides. |
instance_id | The ID of the SLB instance. |
instance_name | The name of the SLB instance. |
network_type | The network type. Valid values:
|
vpc_id | The ID of the VPC. |
body_bytes_sent | The number of bytes in the body of the HTTP response that is sent to the client. |
client_ip | The IP address of the client. |
client_port | The port of the client. |
host | The IP address of the server. By default, the value is obtained from request parameters. If no value is obtained from request parameters, the value is obtained from the Host header. If no value is obtained from request parameters or the Host header, the IP address of the backend server that processes the request is used as the value. |
http_host | The Host header of the HTTP request. |
http_referer | The Referer header of the HTTP request that is received by the proxy. |
http_user_agent | The User-Agent header of the HTTP request that is received by the proxy. |
http_x_forwarded_for | The X-Forwarded-For (XFF) header of the HTTP request that is received by the proxy. |
http_x_real_ip | The originating IP address of the client. |
read_request_time | The time that is taken by the proxy to read the request. Unit: milliseconds. |
request_length | The length of the request. The start line, HTTP request headers, and HTTP request body are all counted. |
request_method | The method of the request. |
request_time | The interval between the time when the proxy receives the first request and the time when the proxy returns a response. Unit: seconds. |
request_uri | The URI of the request that is received by the proxy. |
scheme | The scheme of the request. |
server_protocol | The HTTP version of the request that is received by the proxy. |
slb_vport | The listening port of the SLB instance. |
slbid | The ID of the SLB instance. |
ssl_cipher | The cipher suite that is used. |
ssl_protocol | The protocol that is used to establish an SSL connection. |
status | The HTTP status code in the response that is sent by the proxy. |
tcpinfo_rtt | The round-trip time (RTT) of the client TCP connection. Unit: microseconds. |
time | The time when the log is generated. |
upstream_addr | The IP address and port number of the backend server. |
upstream_response_time | The interval between the time when the SLB instance connects to the backend server and the time when the SLB instance disconnects from the backend server after the required data is received. |
upstream_status | The HTTP status code in the response that is received by the proxy from the backend server. |
vip_addr | The virtual IP address. |
write_response_time | The time that is taken by the proxy to send the request to the client after the proxy receives the request from the backend server. |