1、log_format 普通格式

log_format main '$remote_addr - $remote_user [$time_local] $request '

                '"$status" $body_bytes_sent "$http_referer" '

                '"$http_user_agent" "$http_x_forwarded_for" "$request_time"                        "$upstream_response_time"';

2、log_format JSON 格式

log_format logJson '{

                         "@timestamp": "$time_local", '

                         '"@fields": { '

                         '"remote_addr": "$remote_addr", '

                         '"remote_user": "$remote_user", '

                         '"body_bytes_sent": "$body_bytes_sent", '

                         '"request_time": "$request_time", '

                         '"status": "$status", '

                         '"request": "$request", '

                         '"request_method": "$request_method", '

                         '"http_referrer": "$http_referer", '

                         '"body_bytes_sent":"$body_bytes_sent", '

                         '"http_x_forwarded_for": "$http_x_forwarded_for", '

                         '"http_user_agent": "$http_user_agent" }

                         }';

3、指定日志格式

access_log  /data/logs/nginx/access.log  logJson buffer=32k;

access_log  /data/logs/nginx/access.log  main buffer=32k;

4、字段释义