Recent days Linux containers are famous, even most of us already working on it and few of us start learning about it.
We have already covered article about the famous GUI (Graphical User Interface) tools such as Portainer & Rancher. This will help us to manage containers through GUI.This tutorial will help us to understand and monitor Linux containers through cTop command. It’s a command-line tool like top command.
What is cTop
ctop provides a concise and condensed overview of real-time metrics for multiple containers. It’s Top-like interface for container metrics.
It displays containers metrics such as CPU utilization, Memory utilization, Disk I/O Read & Write, Process ID (PID), and Network Transmit(TX – Transmit FROM this server) and receive(RX – Receive TO this server).
ctop comes with built-in support for Docker and runC connectors for other container and cluster systems are planned for future releases.It doesn’t requires any arguments and uses Docker host variables by default.
How to install cTop
Developer offers a simple shell script, which help us to use ctop instantly. What we have to do is, just download the ctop shell file at
/bin directory for global access. Finally assign the execute permission to ctop shell file.
Download the ctop shell file @
$ sudo wget https://github.com/bcicen/ctop/releases/download/v0.7/ctop-0.7-linux-amd64 -O /usr/local/bin/ctop
Set execute permission to ctop shell file.
$ sudo chmod +x /usr/local/bin/ctop
Alternatively you can install and run ctop through docker. Make sure you should have installed docker as a pre-prerequisites for this. To install docker, refer the following link.
$ docker run --rm -ti \ --name=ctop \ -v /var/run/docker.sock:/var/run/docker.sock \ quay.io/vektorlab/ctop:latest
How to use cTop
Just launch the ctop utility without any arguments. By default it’s bind with
a key which display of all containers (running and non-running). ctop header shows your system time and total number of containers.