日志监控系统分为两部分：采集，分析。
ELK
https://blog.51cto.com/u_15127666/4118522 kibana-timelion-QPS案例 - 容器日志收集方案
https://blog.csdn.net/qq_24054301/article/details/113370560 ELK分析Nginx统计QPS图表
https://www.cnblogs.com/hanyifeng/p/5860731.html 使用Kibana 分析Nginx 日志并在 Dashboard上展示
Loki
基于Loki架构的日志采集，查询系统。
https://github.com/grafana/loki Like Prometheus, but for logs
https://grafana.com/docs/loki/latest/setup/install/ Install Loki
https://grafana.com/docs/loki/latest/send-data/promtail/ Promtail agent
https://github.com/loki4j/loki-logback-appender About Fast and lightweight implementation of Logback appender for Grafana Loki
【参考】
ELK、Loki日志方案比较