Ashura Monitor is a powerful and flexible monitoring system.
The system is easy to install and configure. Compared with zabbix, nagios, cacti, and Xiaomi monitoring, it is quite simple to use. As long as you can write scripts, you can achieve any monitoring requirements without any language limitation.
Software has been open sourced:
Hosting address: https://github.com/AsuraTeam/monitor
Overall structure 
monitor the market 
It has the following characteristics:
1. Data collection without configuration: agent self-discovery, agent active push, any data custom script
2. Scalability, easy to expand, expand at any time, expand at will
3. Historical data query, can return the annual data trend graph in seconds, multiple indicator data, the trend graph is more clear:
3 days 7 days, 15 days, 30 days , 60 days, 90 days, 120 days, 180 days,
240 days,
360 days time period trend Used to load the server side, mysql (no data pressure, no data storage), redis (requires high availability configuration), shared storage devices (local disk, nfs, etc.).
5. Real-time viewing of any data image, historical viewing function
6. For the unified system, basic monitoring does not need to add configuration, it can be added automatically (such as cpu, load, disk usage, network traffic, ss status information, etc., all can be customized)
7. Alarm group configuration, support WeChat, DingTalk, mobile phone, Mail function (WeChat, DingTalk need to be handled separately, not everyone has it)
8. Distributed monitoring, each agent installed is a monitoring system, except for configuration (configuration can only be done on the server side)
9. Customization Data reporting time, at least 5 seconds to report data once 10. Comparison of performance of different servers ,
simpler and clearer
12. Support image collection function
13. Login user supports local and ldap