fluent-plugin-mackerelでhttpdのステータスコードを送信 - Qiita

<source> type tail format apache2 path /var/log/httpd/access.log pos_file /var/log/td-agent/access.log.pos tag data.httpd.accesslog </source> <match data.httpd.accesslog> type datacounter count_interval 1m count_key code tag mackerel.httpd.accesslog outcast_unmatched yes pattern1 2xx ^2\d\d$ pattern2 3xx ^3\d\d$ pattern3 404 ^404$ pattern4 4xx ^4\d\d$ pattern5 5xx ^5\d\d$ </match> <match mackerel.