Update FAQ.md

2022-06-16 11:15:36 +08:00 · 2022-06-16 11:15:36 +08:00 · 987dd0d3b7
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@ -20,3 +20,8 @@ http://10.0.0.26:9115/probe?module=http_2xx&target=https%3A%2F%2Fpayapp.weixin.q
 ```
 journalctl -u blackbox_exporter.service -n20 -f
 ```
 ### prometheus配置告警规则后报错怎么办？
 - 进入prometheus所在的目录，执行如下命令即可检查：
 ```
 ./promtool check rules ./rules.yml 
 ```