Monitor Docker Container Resource Usage with cAdvisor
24#cAdvisor #Docker #Monitoring
Full steps can be found at https://i12bretro.github.io/tutorials...
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What is cAdvisor?
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cAdvisor (Container Advisor) provides container users an understanding of the resource usage and performance characteristics of their running containers. It is a running daemon that collects, aggregates, processes, and exports information about running containers. - https://github.com/google/cadvisor
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Installing Docker
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01. Log into the Linux based device
02. Run the following commands in the terminal
install prerequisites
sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg-agent -y
add docker gpg key
curl -fsSL https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release)/gpg | sudo apt-key add -
add docker software repository
sudo add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release) $(lsb_release -cs) stable"
install docker
sudo apt install docker-ce docker-compose containerd.io -y
enable and start docker service
sudo systemctl enable docker && sudo systemctl start docker
add the current user to the docker group
sudo usermod -aG docker $USER
reauthenticate for the new group membership to take effect
su - $USER
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Running the cAdvisor Container
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01. Now that Docker is installed, run the following commands to setup the cAdvisor Docker container and run it
run the cadvisor container
sudo docker run -d --name=cadvisor -p 8080:8080 -v /:/rootfs:ro -v /var/run:/var/run:ro -v /sys:/sys:ro -v /var/lib/docker/:/var/lib/docker:ro -v /dev/disk/:/dev/disk:ro --privileged --device=/dev/kmsg --restart=unless-stopped gcr.io/cadvisor/cadvisor
02. Open a web browser and navigate to http://DNSorIP:8080
03. Welcome to cAdvisor
Documentation: https://hub.docker.com/r/google/cadvisor
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