EPG组合 (Exporter Prometheus Grafana) 监控MySQL

环境说明

监控机10.0.0.200

服务器10.0.0.201

Prometheus的架构

在被监控服务器10.0.0.201安装exporter

安装node_exporter

wgethttps://github.com/prometheus/node_exporter/releases/download/v0.15.1/node_exporter-0.15.1.linux-amd64.tar.gz

tar zxvf node_exporter-0.15.1.linux-amd64.tar.gz

cd node_exporter-0.15.1.linux-amd64

nohup ./node_exporter &

安装mysqld_exporter

连接mysql授予权限mysql -uroot -p

GRANT REPLICATION CLIENT, PROCESS ON *.* TO'exporter'@'localhost' identified by'123456';

GRANT SELECT ON performance_schema.* TO 'exporter'@'localhost';

flush privileges;

wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.10.0/mysqld_exporter-0.10.0.linux-amd64.tar.gz

tar zxvf mysqld_exporter-0.10.0.linux-amd64

cd mysqld_exporter-0.10.0.linux-amd64

建立配置文件my.cnf

[client]

user=exporter

password=123456

运行mysqld exporter

nohup ./mysqld_exporter -config.my-cnf="my.cnf" &

在监控主机10.0.0.200安装Prometheus

wget https://github.com/prometheus/prometheus/releases/download/v2.0.0/prometheus-2.0.0.linux-amd64.tar.gz

tar zxvf prometheus-2.0.0.linux-amd64.tar.gz

cd prometheus-2.0.0.linux-amd64

prometheus.yml

global:scrape_interval:     5s # By default, scrape targets every 15 seconds.evaluation_interval: 15s# Attach these labels to any time series or alerts when communicating with# external systems (federation, remote storage, Alertmanager).#external_labels:#  monitor: 'codelab-monitor'scrape_configs:- job_name: prometheusstatic_configs:- targets: ['10.0.0.200:9090']labels: instance: prometheus- job_name: linuxstatic_configs:- targets: ['10.0.0.201:9100']labels: instance: db1- job_name: mysqlstatic_configs:- targets: ['10.0.0.201:9104']labels:instance: db1

运行prometheus

nohup prometheus &

打开浏览器访问http://10.0.0.200:9090

查看Status->Target

安装Grafana

yuminstallhttps://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-4.6.2-1.x86_64.rpm

yum install fontconfig

yum install freetype*

yum install urw-fonts

Package details

Installs binary to /usr/sbin/grafana-server
Copies init.d script to /etc/init.d/grafana-server
Installs default file (environment vars) to /etc/sysconfig/grafana-server
Copies configuration file to /etc/grafana/grafana.ini
Installs systemd service (if systemd is available) name grafana-server.service
The default configuration uses a log file at /var/log/grafana/grafana.log
The default configuration specifies an sqlite3 database at /var/lib/grafana/grafana.db

编辑配置文件/etc/grafana/grafana.ini

找到[dashboards.json]

enabled = true

path = /var/lib/grafana/dashboards

安装dashboards

git clone https://github.com/percona/grafana-dashboards.git

cp -r grafana-dashboards/dashboards /var/lib/grafana/

运行grafana server

systemctl start grafana-server

访问grafana服务器

通过浏览器访问http://10.0.0.200:3000, 默认用户名和密码是admin

建立数据源

查看dashboard

以下展现的是node_exporter采集的数据

以下展现的是mysqld_exporter采集的数据

grafana的图表展现比cacti之类的确实漂亮多了。

参考资料

https://prometheus.io/

https://grafana.com/

https://github.com/percona/grafana-dashboards

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