利用Prometheus与Grafana对Mysql服务器的性能监控详解

概述

Prometheus是一个开源的服务监控系统，它通过HTTP协议从远程的机器收集数据并存储在本地的时序数据库上。它提供了一个简单的网页界面、一个功能强大的查询语言以及HTTP接口等等。Prometheus通过安装在远程机器上的exporter来收集监控数据，这里用到了以下两个exporter：

Grafana是一个开源的功能丰富的数据可视化平台，通常用于时序数据的可视化。它内置了以下数据源的支持：

并可以通过插件扩展支持的数据源。

架构图

下面是本次部署的架构图

安装并运行Prometheus

1.在 Monitor 上安装 Prometheus

安装至/opt/prometheus

$ wget https://github.com/prometheus/prometheus/releases/download/v1.5.2/prometheus-1.5.2.linux-amd64.tar.gz$ tar zxvf prometheus-1.5.2.linux-amd64.tar.gz$ mv prometheus-1.5.2.linux-amd64 /opt/prometheus

2.在安装目下编辑配置文件 prometheus.yml

vim /opt/prometheus/prometheus.yml

# my global configglobal: scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute. evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute. # scrape_timeout is set to the global default (10s). # Attach these labels to any time series or alerts when communicating with # external systems (federation, remote storage, Alertmanager). external_labels: monitor: 'codelab-monitor'# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.rule_files: # - "first.rules" # - "second.rules"# A scrape configuration containing exactly one endpoint to scrape:# Here it's Prometheus itself.scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. - job_name: 'prometheus' # metrics_path defaults to '/metrics' # scheme defaults to 'http'. static_configs: - targets: ['localhost:9090'] # 以下是添加的部分 - job_name: linux static_configs: - targets: ['172.30.251.214:9100'] labels: instance: db1 - job_name: mysql static_configs: - targets: ['172.30.251.214:9104'] labels: instance: db1

其中：172.30.251.214是MySQL的IP，端口则是对应的exporter的监听端口。

3.启动Prometheus

[loya@centos6 prometheus]$ ./prometheusINFO[0000] Starting prometheus (version=1.5.2, branch=master, revision=bd1182d29f462c39544f94cc822830e1c64cf55b) source=main.go:75INFO[0000] Build context (go=go1.7.5, user=root@a8af9200f95d, date=20170210-14:41:22) source=main.go:76INFO[0000] Loading configuration file prometheus.yml source=main.go:248INFO[0000] Loading series map and head chunks... source=storage.go:373INFO[0000] 0 series loaded. source=storage.go:378INFO[0000] Starting target manager... source=targetmanager.go:61INFO[0000] Listening on :9090 source=web.go:259