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Metricbeat consists of modules and metricsets. A Metricbeat module is typically
named after the service the metrics are fetched from, such as redis,
mysql, and so on. Each module can contain multiple metricsets. A metricset represents
multiple metrics that are normally retrieved with one request from the remote
system. For example, the Redis
info metricset retrieves info that you get when you
run the Redis
INFO command, and the MySQL
status metricset retrieves
info that you get when you issue the MySQL
SHOW GLOBAL STATUS query.
To guarantee the best user experience, it’s important to us that only high quality modules are part of Metricbeat. The modules and metricsets that are contributed must meet the following requirements:
fields.ymlfile to generate docs and Elasticsearch templates
- Documentation files
- Integration tests
- 80% test coverage (unit, integration, and system tests combined)
Metricbeat allows you to build a wide variety of modules and metricsets on top of it. For a module to be accepted, it should focus on fetching service metrics directly from the service itself and not via a third-party tool. The goal is to have as few movable parts as possible and for Metricbeat to run as close as possible to the service that it needs to monitor.