Gain visibility into your systems with Munin, an exceptional tool for monitoring server health and performance. This guide takes you through the process of setting up Munin on Ubuntu 20.04 LTS to keep your servers in top shape.
Effortless Server Monitoring with Munin on Ubuntu 20.04 LTS
Start by ensuring your system is up-to-date and ready for Munin and Apache web server installation:
sudo apt update
sudo apt upgrade
sudo apt install munin apache2
By default, Munin is only accessible locally. We want to securely extend this access to users who authenticate. To do so, modify your Apache configuration for Munin, typically found at /etc/apache2/conf-enabled/munin.conf. Update the directory permissions:
<Directory /var/cache/munin/www>
Require all granted
AuthUserFile /etc/apache2/munin-htpasswd
AuthType Basic
AuthName "Munin Monitoring"
</Directory>
After setting the Apache directives, create a username and password with:
sudo htpasswd -c /etc/apache2/munin-htpasswd username
Your Munin dashboards are now at your fingertips via http://your_server_ip/munin after restarting Apache:
sudo systemctl restart apache2
For detailed MySQL monitoring, add the ‘munin’ MySQL user as such:
CREATE USER 'munin'@'localhost' IDENTIFIED VIA mysql_native_password USING 'password';
GRANT SELECT ON *.* TO 'munin'@'localhost';
FLUSH PRIVILEGES;
Assure Munin can connect to MySQL by editing or creating the /etc/munin/plugin-conf.d/mysql.conf:
[mysql*]
env.mysqluser munin
env.mysqlpassword password
Then, determine which MySQL plugins Munin can use:
sudo -u munin munin-node-configure --suggest --shell | grep mysql
Enable the selected plugins:
sudo -u munin munin-node-configure --shell | grep mysql | sudo sh
Lastly, apply your changes by restarting Munin-node:
sudo systemctl restart munin-node
Quick Tips & FAQs
Why Choose Munin for System Monitoring?
Munin is a versatile, lightweight monitoring solution that provides a snapshot of your system’s performance through intuitive graphs, making it simple to detect and address potential issues promptly.
How Does Munin Help Keep Your Servers in Check?
By leveraging Munin, you maintain an eagle-eye view over your system metrics, which aids in preventive maintenance, quick troubleshooting, and informed decision-making for system enhancements.
