Netdata is a powerful, open-source monitoring tool that provides real-time performance and health monitoring for systems and services. It is lightweight and highly customizable, making it ideal for both personal and enterprise environments. In this guide, we will show you how to install Netdata on Rocky Linux 8 and use it to monitor various services.

Step 1: Update Your System

Before installing Netdata, update your system packages to ensure everything is up to date:

sudo dnf update

Step 2: Install Required Dependencies

Netdata requires several dependencies to run properly. Install them using the following command:

sudo dnf install epel-release curl git

Step 3: Install Netdata

Netdata provides a one-line installation script that simplifies the installation process. Run the following command to install Netdata:

bash <(curl -Ss https://my-netdata.io/kickstart.sh)

This script will automatically download and install Netdata on your system. Once the installation is complete, Netdata will start automatically.

Step 4: Configure Firewall

By default, Netdata listens on port 19999. To access the Netdata web interface, you need to allow this port through the firewall:

sudo firewall-cmd --permanent --add-port=19999/tcp
sudo firewall-cmd --reload

Step 5: Access the Netdata Web Interface

Once installed, you can access the Netdata dashboard by navigating to http://your_server_ip:19999 in your web browser. The dashboard provides real-time monitoring of your system’s CPU, memory, disk usage, network traffic, and more.

Step 6: Monitor Services with Netdata

Netdata can monitor a wide variety of services and applications, including web servers, databases, and containers. By default, Netdata detects many common services, but you can also customize it to monitor specific services by editing the configuration files located in /etc/netdata.

For example, to monitor an Nginx web server, make sure that Netdata's nginx.conf file is enabled:

sudo nano /etc/netdata/python.d/nginx.conf

Ensure the configuration matches your Nginx setup. After making any changes, restart Netdata:

sudo systemctl restart netdata

Step 7: Setting Up Alerts

Netdata provides built-in alerting that can notify you of critical issues such as high CPU usage, disk space limits, and more. You can customize alert thresholds and notification methods in the health.d directory:

sudo nano /etc/netdata/health.d/*.conf

Once configured, Netdata can send alerts via email, Slack, Discord, and other messaging platforms.

Conclusion

Congratulations! You have successfully installed Netdata on Rocky Linux 8 and configured it to monitor system performance and services. Netdata’s real-time monitoring capabilities make it an essential tool for maintaining system health and ensuring optimal performance.

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