This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Latest Version Dependencies status unknown Test status unknown Test coverage unknown
Project Description

A command line / text based Linux Containers monitoring tool that works just like you expect.

In a hurry?

curl -sSl https://raw.githubusercontent.com/yadutaf/ctop/master/cgroup_top.py > /opt/ctop && python /opt/ctop

Introduction

ctop will help you see what’s going on at the container level. Basically, containers are a logical group of processes isolated using kernel’s cgroups and namespaces. Recently, they have been made popular by Docker and they are also heavily used under the hood by systemd and a load of container tools like lxc, rocket, lmctfy and many others.

Under the hood, ctop will collect all metrics it can from cgroups in realtime and render them to instantly give you an overview of the global system health.

It currently collects metrics related to cpu, memory and block IO usage as well as metadata such as owning user (mostly for systemd based containers), uptime and attempts to guess the container managing technology behind.

When the container technology has been successfully guessed, additional features are exposed like attaching to container (basically, it opens a shell in the container context) and stopping it.

ctop author uses it on production system to quicky detect biggest memory users in low memory situations.

Features

  • collect cpu, pids, memory and blkio metrics
  • collect metadata like task count, owning user, container technology
  • sort by any column
  • filter by container type (docker, lxc, systemd, …)
  • optionally display logical/tree view
  • optionally fold/unfold sub cgroup tree
  • optionally follow selected cgroup/container
  • optionnaly pause the refresh (typically, to select text)
  • detects Docker, LXC, unprivileged LXC, OpenVZ and systemd based containers
  • supports advanced features for Docker, LXC and OpenVZ based containers
  • open a shell/attach to supported container types for further diagnose
  • stop/kill/chekpointing supported container types
  • click to sort / reverse
  • click to select cgroup
  • no external dependencies beyond Python >= 2.6 or Python >= 3.0

Installation

As a monitoring tool, ctop tries to be as dicrete as possible. Nonetheless it still has some expectations. It will need at least Python 2.6 with builtin curses support to run. This is usually found with Debian 6 and newer.

This said, the recommended installation method relies on pip

pip install ctop
ctop

If using pip is not an option, which is often the case on production systems, you may also directly grab the self-contained source file directly from github and run it in place. All you’ll need is Python 2.6 (Debian Squeeze):

wget https://raw.githubusercontent.com/yadutaf/ctop/master/cgroup_top.py -O ctop
chmod +x ctop
./ctop

Alternatively, if you are a Boot2docker user, you may install a Dockerized version of ctop instead. Please note that this is experimental. You have to have a docker binary inside your container to control / attach to your containers from ctop using this method:

docker pull yadutaf/ctop
docker run --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro --volume=/var/run/docker.sock:/var/run/docker.sock -it --rm yadutaf/ctop
# Optionally, to resolve uids to usernames, add '--volume /etc/passwd:/etc/passwd:ro'

Usage:

Command line:

Monitor local cgroups as used by Docker, LXC, SystemD, ...

Usage:
  ctop [--tree] [--refresh=<seconds>] [--columns=<columns>] [--sort-col=<sort-col>] [--follow=<name>] [--fold=<cgroup>, ...] [--type=<container type>, ...]
  ctop (-h | --help)

Options:
  --tree                 Show tree view by default.
  --fold=<name>          Start with <name> cgroup path folded
  --follow=<name>        Follow/highlight cgroup at path.
  --type=TYPE            Only show containers of this type
  --refresh=<seconds>    Refresh display every <seconds> [default: 1].
  --columns=<columns>    List of optional columns to display. Always includes 'name'. [default: owner,processes,memory,cpu-sys,cpu-user,blkio,cpu-time].
  --sort-col=<sort-col>  Select column to sort by initially. Can be changed dynamically. [default: cpu-user]
  -h --help              Show this screen.

Control:

  • press p to toggle/pause the refresh and select text.
  • press f to let selected line follow / stay on the same container. Default: Don’t follow.
  • press q or Ctrl+C to quit.
  • press F5 to toggle tree/list view. Default: list view.
  • press and to navigate between containers.
  • press + or - to toggle child cgroup folding
  • click on title line to select sort column / reverse sort order.
  • click on any container line to select it.

Additionally, for supported container types (Currently Docker, LXC and OpenVZ):

  • press a to attach to console output.
  • press e to open a shell in the container context. Aka ‘enter’ container.
  • press s to stop the container (SIGTERM).
  • press k to kill the container (SIGKILL).
  • press c to checkpointing the container(OpenVZ only now - run ‘vzctl chkpnt CTID’)

Requirements

  • python >=2.6 or python >=3.0, with builtin curses support

Licence

MIT

Release History

Release History

1.0.0

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.4.1

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.4.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.3.1

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.3.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.2.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.1.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
ctop-1.0.0.tar.gz (13.3 kB) Copy SHA256 Checksum SHA256 Source May 13, 2016

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS HPE HPE Development Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting