How to Install cAdvisor on Fedora CoreOS Latest

cAdvisor is an open-source container monitoring tool that provides detailed information on the resource usage and performance of running containers. In this tutorial, we will guide you through the process of installing cAdvisor on Fedora CoreOS Latest.

Prerequisites

Before we begin, make sure that you have the following:

• A running instance of Fedora CoreOS Latest
• Basic knowledge of the terminal/command line in Linux

Installation Steps

1. Open a terminal and log in to the Fedora CoreOS instance using SSH or as the root user.

2. Update the system packages to the latest version using the command:

dnf -y update 

3. Install cAdvisor using the following command:

podman run -d --name cadvisor --network=host \ 
-v /:/rootfs:ro \ 
-v /var/run:/var/run:rw \
-v /sys:/sys:ro \ 
-v /var/lib/docker/:/var/lib/docker:ro \ 
google/cadvisor

This command will download the latest version of cAdvisor and run it as a container. The options used in the command are:

• -d: Run the container in detached mode.
• --name cadvisor: Set the name for the container as cadvisor.
• --network=host: Use the host network to enable container access to host resources.
• -v /:/rootfs:ro: Mount the root file system of the host to the container with read-only permissions.
• -v /var/run:/var/run:rw: Mount the /var/run directory of the host as read-write in the container.
• -v /sys:/sys:ro: Mount the /sys directory of the host with read-only permissions in the container to provide access to system resources.
• -v /var/lib/docker/:/var/lib/docker:ro: Mount the Docker directory of the host with read-only permissions in the container to enable cAdvisor to access Docker metrics.
• google/cadvisor: The name of the image to download and run as a container.

4. Verify that cAdvisor is running by accessing the web interface. Open a web browser and enter the following URL:

http://<server-ip-address>:8080/

Replace <server-ip-address> with the IP address of your Fedora CoreOS instance. You should see the cAdvisor dashboard with the list of running containers and their metrics.

Conclusion

In this tutorial, we learned how to install cAdvisor on Fedora CoreOS latest using Podman. cAdvisor is an essential tool for monitoring containers and their resource utilization, and we hope this guide helped you get started with it on your Fedora CoreOS instance.

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