坑坑坑，官網說明很不明顯
https://www.elastic.co/guide/en/beats/metricbeat/current/configuration-template.html
6.0以後版本具體設置在filebeat.yml如下
setup.template.name: "myname-01" #頂格，和output對其
setup.template.pattern: "myname-01-*" #頂格，和output對其
output.elasticsearch:
hosts: ["192.168.10.63:9200"]
index: "myname-01-%{+yyyy.MM.dd}" #和hosts對其