Prometheus

原理

Prometheus通过安装在远程机器上的exporter来收集监控数据

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1. prometheus:

https://www.lijiaocn.com/%E9%A1%B9%E7%9B%AE/2018/08/03/prometheus-usage.html

2. Exporter

redis_exporter:

地址：https://github.com/oliver006/redis_exporter

https://yq.aliyun.com/articles/251478

https://blog.52itstyle.vip/archives/1984/

使用的端口：9121

node_exporter:

mysqld_exporter:

地址： https://github.com/prometheus/mysqld_exporter

https://yunlzheng.gitbook.io/prometheus-book/part-ii-prometheus-jin-jie/exporter/commonly-eporter-usage/use-promethues-monitor-mysql

http://ylzheng.com/2018/04/02/use-prometheus-monitor-mysql/

GRANT SELECT ON performance_schema.* TO 'exporter'@'%'; (注意权限更改)

3. 文档

https://yunlzheng.gitbook.io/prometheus-book/

redis参数

http://redisdoc.com/client_and_server/info.html?highlight=connected_clients

4. 数据统计

默认是本地

存储到ES: https://github.com/pwillie/prometheus-es-adapter

5. api调用

http://172.16.0.156:9090/api/v1/query?query=rate(mysql_global_status_slow_queries[5m])&start=1558410000

6. 遇到的问题

1. grafana smtp 配置问题

报错 Failed to send alert notification email logger=alerting.notifier.email error="unencrypted connection"

https://github.com/grafana/grafana/issues/12633

因为Go SMTP软件包不允许在没有加密的情况下进行身份验证。来自https://godoc.org/net/smtp#PlainAuth