gistfile1.txt

log_format logstash_json '{ "@timestamp": "$time_iso8601", '
            '"remote_addr": "$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": "$http_referer", '
            '"http_cookie": "$http_cookie", '
            '"upstream_status": "$upstream_status", '
            '"upstream_response_time": "$upstream_response_time", '
            '"http_user_agent": "$http_user_agent" }';

access_log  /var/log/nginx/access.json logstash_json buffer=32k;
error_log   /var/log/nginx/error.log warn;