Munin is a monitoring tool that helps in visualizing system resources such as CPU, memory, network, and disk usage. In this tutorial, we will guide you through the installation process of Munin on Fedora CoreOS Latest.
Before installing Munin, ensure that you have the following:
The first step is to update the system packages and dependencies by running the following command:
sudo dnf update -y
In this step, we will install Munin by running the following command:
sudo dnf install munin -y
After installing Munin, we need to configure it to work correctly. By default, Munin uses the localhost IP address, which is not accessible from external networks.
To configure Munin, open the /etc/munin/munin.conf file using your favorite text editor:
sudo nano /etc/munin/munin.conf
Locate the following lines and change them accordingly:
# a list of addresses that are allowed to connect to this server
# if you want to allow everyone, leave this wildcard
allow ^127\.0\.0\.1$
To allow all networks, replace the above line with the following:
allow ^0\.0\.0\.0$
Also, ensure that the following line has the correct hostname of the Munin node:
# Hostname of the node
# This, plus all nodes' names must be unique.
# I.e., you cannot have two nodes named 'localhost.localdomain'.
# An unqualified name is assumed to be a host in your domain.
# The FQDN must not be included here, must be separately resolved.
hostname localhost.localdomain
If required, replace the hostname with the correct hostname of the Munin node.
Save and close the file.
After configuring Munin, we need to restart Munin and Apache services to apply changes. Run the following command:
sudo systemctl restart munin-node
sudo systemctl restart httpd
Munin web interface is running on port 80 by default. To access it, open your web browser and navigate to http://[server-ip-address]/munin.
Replace [server-ip-address] with the IP address of the Munin node or the hostname if your DNS is configured.
You will see a dashboard with graphs showing system resources such as CPU, memory, network, and disk usage.
In this tutorial, we have shown you how to install and configure Munin on Fedora CoreOS Latest. You can now monitor your system resources and keep track of your server performance.
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