Prometheus+Grafana部署请参考上篇文章: Prometheus+Grafana部署:

一、Prometheus监控MySQL

1、创建MySQL监控用户

mysql> create user "prometheus"@"%" identified by 'NTQ34tg*@19VF';
mysql> grant select,replication client,process ON *.* to "prometheus"@"%";
mysql> flush privileges;

2、安装mysqld_exporter

wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.14.0/mysqld_exporter-0.14.0.linux-amd64.tar.gz
tar zxf mysqld_exporter-0.14.0.linux-amd64.tar.gz 
mv mysqld_exporter-0.14.0.linux-amd64 /usr/local/mysqld_exporter

3、配置mysql连接信息

cd /usr/local/mysqld_exporter
vim .my.cnf

[client]
user=prometheus
password=NTQ34tg*@19VF

4、配置systemd管理

cat > /usr/lib/systemd/system/mysqld_exporter.service << EOF
[Unit]
Description=mysqld_exporter Service
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/mysqld_exporter/.my.cnf
ExecReload=/bin/kill -HUP \$MAINPID
Restart=on-failure
RestartSec=30s

[Install]
WantedBy=multi-user.target
EOF

启动并加入开机自启动

systemctl enable mysqld_exporter --now
systemctl status  mysqld_exporter

默认端口为9104

 netstat -anput |grep 9104

5、prometheus服务器配置,编辑prometheus.yml文件

   - job_name: "MySQL_百度saas"
    static_configs:
      - targets: ["xxxx.xxxx.xxx.xxx:9104"]     # IP地址+端口

注意缩进和上面节点保持对齐，如下:

systemctl restart prometheus.service

5、验证
prometheus页面验证

二、Grafana添加MySQL监控模板

这里使用MySQL的模板ID：7362