常用的日志格式化格式

 log_format json '{ "@timestamp": "$time_iso8601", '
        '"remote_addr": "$remote_addr", '
        '"referer": "$http_referer", '
        '"request": "$request", '
        '"status": $status, '
        '"bytes":$body_bytes_sent, '
        '"agent": "$http_user_agent", '
        '"x_forwarded": "$http_x_forwarded_for", '
        '"upstr_addr": "$upstream_addr",'
        '"upstr_host": "$upstream_http_host",'
        '"ups_resp_time": "$upstream_response_time" }';

    access_log  logs/access.log  json