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121 lines
5.5 KiB
Markdown
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cTop - A CLI Tool For Container Monitoring
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======
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Recent days Linux containers are famous, even most of us already working on it and few of us start learning about it.
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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.
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This tutorial will help us to understand and monitor Linux containers through cTop command. It’s a command-line tool like top command.
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### What’s cTop
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[ctop][1] provides a concise and condensed overview of real-time metrics for multiple containers. It’s Top-like interface for container metrics.
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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).
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ctop comes with built-in support for Docker and runC; connectors for other container and cluster systems are planned for future releases.
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It doesn’t requires any arguments and uses Docker host variables by default.
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**Suggested Read :**
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**(#)** [Portainer – A Simple Docker Management GUI][2]
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**(#)** [Rancher – A Complete Container Management Platform For Production Environment][3]
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### How To Install cTop
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Developer offers a simple shell script, which help us to use ctop instantly. What we have to do, just download the ctop shell file at `/bin` directory for global access. Finally assign the execute permission to ctop shell file.
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Download the ctop shell file @ `/usr/local/bin` directory.
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```
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$ sudo wget https://github.com/bcicen/ctop/releases/download/v0.7/ctop-0.7-linux-amd64 -O /usr/local/bin/ctop
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```
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Set execute permission to ctop shell file.
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```
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$ sudo chmod +x /usr/local/bin/ctop
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```
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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.
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**Suggested Read :**
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**(#)** [How to install Docker in Linux][4]
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**(#)** [How to play with Docker images on Linux][5]
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**(#)** [How to play with Docker containers on Linux][6]
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**(#)** [How to Install, Run Applications inside Docker Containers][7]
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```
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$ docker run --rm -ti \
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--name=ctop \
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-v /var/run/docker.sock:/var/run/docker.sock \
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quay.io/vektorlab/ctop:latest
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```
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### How To Use cTop
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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).
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ctop header shows your system time and total number of containers.
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```
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$ ctop
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```
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You might get the output similar to below.
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![][9]
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### How To Manage Containers
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You can able to administrate the containers using ctop. Select a container that you want to manage then hit `Enter` button and choose required options like start, stop, remove, etc,.
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![][10]
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### How To Sort Containers
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By default ctop sort the containers using state field. Hit `s` key to sort the containers in the different aspect.
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![][11]
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### How To View the Containers Metrics
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If you want to view more details & metrics about the container, just select the corresponding which you want to view then hit `o` key.
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![][12]
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### How To View Container Logs
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Select the corresponding container which you want to view the logs then hit `l` key.
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![][13]
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### Display Only Active Containers
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Run ctop command with `-a` option to show active containers only.
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![][14]
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### Open Help Dialog Box
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Run ctop, just hit `h`key to open help section.
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![][15]
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--------------------------------------------------------------------------------
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via: https://www.2daygeek.com/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux/
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作者：[2DAYGEEK][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.2daygeek.com/author/2daygeek/
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[1]:https://github.com/bcicen/ctop
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[2]:https://www.2daygeek.com/portainer-a-simple-docker-management-gui/
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[3]:https://www.2daygeek.com/rancher-a-complete-container-management-platform-for-production-environment/
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[4]:https://www.2daygeek.com/install-docker-on-centos-rhel-fedora-ubuntu-debian-oracle-archi-scentific-linux-mint-opensuse/
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[5]:https://www.2daygeek.com/list-search-pull-download-remove-docker-images-on-linux/
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[6]:https://www.2daygeek.com/create-run-list-start-stop-attach-delete-interactive-daemonized-docker-containers-on-linux/
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[7]:https://www.2daygeek.com/install-run-applications-inside-docker-containers/
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[8]:data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
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[9]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-1.png
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[10]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-2.png
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[11]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-3.png
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[12]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-4a.png
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[13]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-7.png
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[14]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-5.png
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[15]:https://www.2daygeek.com/wp-content/uploads/2018/02/ctop-a-command-line-tool-for-container-monitoring-and-management-in-linux-6.png
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