数据像这样,怎么统计出最近半小时 200 ,304 ,400 出现的次数,还可能有其他值 404 ,401 等 es_nginx_access{instance="aliyun-server-2", job="logstash"} 400 es_nginx_access{instance="aliyun-server-2", job="logstash"} 200 es_nginx_access{instance="aliyun-server-2", job="logstash"} 200 es_nginx_access{instance="aliyun-server-2", job="logstash"} 304
