nginx log format json/csv

logfile JSON format  

log_format backend_json '{proxy:\'$remote_addr\', '
                'remote_addr:\'$http_x_forwarded_for\',http_user:\'$remote_user\', '
                'request_timestamp: \'$time_iso8601\',request:\'$request\',status:\'$status\','
                'request_size:\'$body_bytes_sent\',referer:\'$http_referer\','
                'user_agent:\'$http_user_agent\'}';

logfile CSV fornnat

log_format csv2
        '"$remote_addr",'
        '"$http_x_forwarded_for",'
        '$status,'
        '$request_time,'
        '"$http_host",'
        '"$server_addr",'
        '"$scheme",'
        '"$time_iso8601",'
        '$bytes_sent,'
        '"$request",'
        '"$http_referer",'
        '"$http_user_agent"';

Использование:

access_log  /var/log/nginx/site-access.log csv2;