Deploying Prometheus, Node Exporter, and MySQL Exporter on Linux and Configuring Grafana Monitoring

1. Deploy Prometheus

tar -zxvf prometheus-2.39.1.linux-amd64.tar.gz

cd prometheus-2.39.1.linux-amd64

mv prometheus-2.39.1.linux-amd64 /usr/local/prometheus

systemctl daemon-reload

systemctl start prometheus

2. Deploy node_exporter

tar -zxvf node_exporter-1.4.0.linux-amd64.tar.gz

3. Modify Prometheus configuration (prometheus.yml)

Add a job for the node exporter:

- job_name: 'node'

file_sd_configs:

- files: ['/usr/local/prometheus/sd_config/node.yml']

refresh_interval: 5s

Create /usr/local/prometheus/sd_config/node.yml with the target:

- targets:

- 192.168.20.235:9100

4. Check the configuration file

./promtool check config prometheus.yml

5. Monitor MySQL service with mysql_exporter

5.1 Create a MySQL user for the exporter and grant permissions:

mysql> create user 'node_exporter'@'localhost' identified by '123456';

mysql> grant process,replication client,select on *.* to 'node_exporter'@'localhost';

mysql> flush privileges;

5.2 Install mysql_exporter:

tar -zxvf mysqld_exporter-0.14.0.linux-amd64.tar.gz

5.3 Create a configuration file /usr/local/mysql_exporter/.my.cnf for password‑less access:

[client]

user=node_exporter

password=123456

5.4 Start the exporter and register it as a systemd service:

nohup /usr/local/mysql_exporter/mysqld_exporter --config.my-cnf=/usr/local/mysqld_exporter/.my.cnf &

systemctl daemon-reload

systemctl restart mysql_exporter.service

6. Add MySQL exporter to Prometheus scrape configuration

- job_name: "mysql"

static_configs:

- targets: ["192.168.20.8:9104"]

7. Configure Grafana MySQL dashboard template

Conclusion

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