dockviz: Visualizing Docker Data

This command takes Docker image and container information and presents in different ways, to help you understand what's going on inside the system.

Quick Start

1. Install dockviz. Either:

• Download the latest release.
• Set up an alias to run it from the (5.8 MB) docker image:

alias dockviz="docker run --rm -v /var/run/docker.sock:/var/run/docker.sock nate/dockviz"

2. Visualize images by running dockviz images -t, which has similar output to docker images -t.

Image can be visualized as Graphviz, or as a tree or short summary in the terminal. Only Graphviz output has been implemented for containers.

Output Examples

Containers

Currently, containers are visualized with labeled lines for links. Containers that aren't running are greyed out.

$ dockviz containers -d | dot -Tpng -o containers.png

Images

Image info is visualized with lines indicating parent images:

$ dockviz images -d | dot -Tpng -o images.png

Or in short form:

$ dockviz images -s
nate/mongodb: latest
redis: latest
ubuntu: 12.04, precise, 12.10, quantal, 13.04, raring

Or as a tree in the terminal:

$ dockviz images -t
└─511136ea3c5a Virtual Size: 0.0 B
  |─f10ebce2c0e1 Virtual Size: 103.7 MB
  | └─82cdea7ab5b5 Virtual Size: 103.9 MB
  |   └─5dbd9cb5a02f Virtual Size: 103.9 MB
  |     └─74fe38d11401 Virtual Size: 209.6 MB Tags: ubuntu:12.04, ubuntu:precise
  |─ef519c9ee91a Virtual Size: 100.9 MB
  | └─07302703becc Virtual Size: 101.2 MB
  |   └─cf8dc907452c Virtual Size: 101.2 MB
  |     └─a7cf8ae4e998 Virtual Size: 171.3 MB Tags: ubuntu:12.10, ubuntu:quantal
  |       |─e18d8001204e Virtual Size: 171.3 MB
  |       | └─d0525208a46c Virtual Size: 171.3 MB
  |       |   └─59dac4bae93b Virtual Size: 242.5 MB
  |       |     └─89541b3b35f2 Virtual Size: 511.8 MB
  |       |       └─7dac4e98548e Virtual Size: 511.8 MB
  |       |         └─341d0cc3fac8 Virtual Size: 511.8 MB
  |       |           └─2f96171d2098 Virtual Size: 511.8 MB
  |       |             └─67b8b7262a67 Virtual Size: 513.7 MB
  |       |               └─0fe9a2bc50fe Virtual Size: 513.7 MB
  |       |                 └─8c32832f07ba Virtual Size: 513.7 MB
  |       |                   └─cc4e1358bc80 Virtual Size: 513.7 MB
  |       |                     └─5c0d04fba9df Virtual Size: 513.7 MB Tags: nate/mongodb:latest
  |       └─398d592f2009 Virtual Size: 242.2 MB
  |         └─0cd8e7f50270 Virtual Size: 243.6 MB
  |           └─594b6f8e6f92 Virtual Size: 243.6 MB
  |             └─f832a63e87a4 Virtual Size: 243.6 MB Tags: redis:latest
  └─02dae1c13f51 Virtual Size: 98.3 MB
    └─e7206bfc66aa Virtual Size: 98.5 MB
      └─cb12405ee8fa Virtual Size: 98.5 MB
        └─316b678ddf48 Virtual Size: 169.4 MB Tags: ubuntu:13.04, ubuntu:raring

Running

Dockviz supports connecting to the Docker daemon directly. It defaults to unix:///var/run/docker.sock, but respects the following as well:

• The DOCKER_HOST, DOCKER_CERT_PATH, and DOCKER_TLS_VERIFY environment variables, as set up by boot2docker or docker-machine.
• Command line arguments (e.g. --tlscacert), like those that Docker itself supports.

Dockviz also supports receiving Docker image or container json data on standard input.

$ curl -s http://localhost:4243/images/json?all=1 | dockviz images --tree
$ curl -s http://localhost:4243/containers/json?all=1 | dockviz containers --dot | dot -Tpng -o containers.png
$ echo -e "GET /images/json?all=1 HTTP/1.0\r\n" | nc -U /var/run/docker.sock | tail -n +5 | dockviz images --tree
$ echo -e "GET /containers/json?all=1 HTTP/1.0\r\n" | nc -U /var/run/docker.sock | tail -n +5 | dockviz containers --dot | dot -Tpng -o containers.png

Note: GNU netcat doesn't support -U (UNIX socket) flag, so OpenBSD variant can be used.

Binaries

See the releases area for binaries.

Build

go get ./...
go build