Quickly visualize docker networks with graphviz.

Last update: Dec 12, 2022

Overview

Docker Network Graph

Visualize the relationship between Docker networks and containers as a neat graphviz graph.

Example

Usage

usage: docker-net-graph.py [-h] [-v] [-o OUT]

Visualize docker networks.

optional arguments:
  -h, --help         show this help message and exit
  -v, --verbose      Verbose output
  -o OUT, --out OUT  Write output to file

In most cases what you want to run are the following couple commands:

git clone https://github.com/LeoVerto/docker-network-graph.git
cd docker-network-graph
pipenv install
pipenv run python docker-net-graph.py -o output.svg

This will generate an .svg file containing the graph.

Running inside docker

If you want to generate a graph for a remote system you can also easily run this script inside a pre-built docker container:

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock leoverto/docker-network-graph

This will just generate and output the graph in the DOT Language. You can then paste that code into GraphvizOnline to render it. The recommended rendering engine is fdp.

Alternatively, if you prefer to render locally, you can run fdp -Tpng -o out.png on a system with graphviz installed, paste the previous output there, press enter and finally CTRL+C to generate the file.

For more advanced use cases you can append arguments to the docker run command as if you were running it in a local shell.

Development

If you'd like to contribute to this project, there is a sample docker-compose file using dummy containers in test.

You can deploy it using docker-compose -f test/docker-compose.yml up -d.

Comments

Network aliases not shown
you can write something like this in docker-compose:

nginx: networks: webserver: aliases: - 'local.myapp'

It would be great to see the aliases per network (I currently have an issue using this and your tool might be very helpful !)
opened by Neirda24 4

KeyError

When executing docker run --rm -v /var/run/docker.sock:/var/run/docker.sock leoverto/docker-network-graph I get this:

Traceback (most recent call last):
  File "docker-net-graph.py", line 211, in <module>
    generate_graph(args.verbose, args.out)
  File "docker-net-graph.py", line 190, in generate_graph
    draw_link(g, networks, link)
  File "docker-net-graph.py", line 166, in draw_link
    color=networks[link.network_name].color
KeyError: 'mailcowdockerized_mailcow-network'

Here's the definition of the offending network (from https://github.com/mailcow/mailcow-dockerized/):

networks:
  mailcow-network:
    driver: bridge
    driver_opts:
      com.docker.network.bridge.name: br-mailcow
    enable_ipv6: true
    ipam:
      driver: default
      config:
        - subnet: ${IPV4_NETWORK:-172.22.1}.0/24
        - subnet: ${IPV6_NETWORK:-fd4d:6169:6c63:6f77::/64}

Thanks for looking into this!

bug

opened by tobi-nmx 2

Error With host network_mode ?

Traceback (most recent call last):
  File "docker-net-graph.py", line 191, in <module>
    generate_graph(args.verbose, args.out)
  File "docker-net-graph.py", line 170, in generate_graph
    draw_link(g, networks, link)
  File "docker-net-graph.py", line 147, in draw_link
    color=networks[link.network_name].color
KeyError: 'host'

I'm getting this error on running the tool.

opened by Xyaren 2

Bump docker/login-action from 1 to 1.9.0
Bumps docker/login-action from 1 to 1.9.0.

Release notes

Sourced from docker/login-action's releases.

v1.9.0

Remove os limitation (#66)

Enhance workflow (#61)

Add example for Quay (#60)

Use GITHUB_TOKEN with GHCR (#59)

Improve GHCR doc (#55)

Add e2e tests for GAR (#48)

Add e2e tests for GCR (#42)

v1.8.0

Handle Amazon ECR registries associated with other accounts (#40)

Add e2e tests for ECR (#27)

v1.7.0

Add support for public ECR (#37 #41)

Add example with DinD (#35)

Add example for OCI Oracle Cloud Infrastructure Registry (#28)

Add e2e tests pt.1 (#23)

v1.6.0

Handle AWS credentials (#21)

v1.5.0

Username required (#18)

Mostly tests and some small changes (#16)

v1.4.1

Fix CVE-2020-15228

v1.4.0

Take the password from stdin

Update deps

v1.3.0

Handle AWS CLI v2

Check AWS CLI version

Add tests

Add example for Azure Container Registry (ACR)

Move zeit/ncc to vercel/ncc

v1.2.0

Add support for AWS Elastic Container Registry (ECR)

Add example for Google Container Registry (GCR)

v1.1.1

Typo

v1.1.0

Add tests and examples for GitLab and GitHub Package Registry

... (truncated)

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dependencies
opened by dependabot[bot] 1
Bump actions/cache from 2 to 2.1.5
Bumps actions/cache from 2 to 2.1.5.

Release notes

Sourced from actions/cache's releases.

v2.1.5

Fix permissions error seen when extracting caches with GNU tar that were previously created using BSD tar (actions/cache#527)

v2.1.4

Make caching more verbose #650

Use GNU tar on macOS if available #701

v2.1.3

Upgrades @actions/core to v1.2.6 for CVE-2020-15228. This action was not using the affected methods.

Fix error handling in uploadChunk where 400-level errors were not being detected and handled correctly

v2.1.2

Adds input to limit the chunk upload size, useful for self-hosted runners with slower upload speeds

No-op when executing on GHES

v2.1.1

Update @actions/cache package to v1.0.2 which allows cache action to use posix format when taring files.

v2.1.0

Replaces the http-client with the Azure Storage SDK for NodeJS when downloading cache content from Azure. This should help improve download performance and reliability as the SDK downloads files in 4 MB chunks, which can be parallelized and retried independently

Display download progress and speed

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dependencies
opened by dependabot[bot] 1
Bump docker/setup-buildx-action from 1 to 1.3.0
Bumps docker/setup-buildx-action from 1 to 1.3.0.

Release notes

Sourced from docker/setup-buildx-action's releases.

v1.3.0

Display BuildKit version (#72)

v1.2.0

Remove os limitation (#71)

Add test job for config input (#68)

BuildKit container logs (#70)

Enhance builder inspection (#69)

Add config input (#67)

Bump @actions/core from 1.2.6 to 1.2.7 (#65)

v1.1.2

Fix doc links (#63)

Bump @actions/http-client from 1.0.9 to 1.0.11 (#61)

Enhance workflow (#62)

Bump semver from 7.3.4 to 7.3.5 (#59)

v1.1.1

Revert BuildKit step log limits tweak (#50)

v1.1.0

Override the configured builder instance (#49)

Improve builder name generation (#48)

Tweak BuildKit step log limits (#46)

v1.0.4

Remove hardcoded buildkit container image moby/buildkit:v0.8-beta (#43)

Bumps semver from 7.3.2 to 7.3.4 (#42)

v1.0.3

Group log output (#32)

Bump @actions/tool-cache from 1.6.0 to 1.6.1 (#36)

Bump @actions/http-client from 1.0.8 to 1.0.9 (#30)

v1.0.2

Temporarly set buildkit container image to moby/buildkit:v0.8-beta (#27)

v1.0.1

Fix CVE-2020-15228

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dependencies
opened by dependabot[bot] 1
Bump docker/metadata-action from 3 to 3.1.0
Bumps docker/metadata-action from 3 to 3.1.0.

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v3.1.0

Add format attribute for type=sha (#81)

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dependencies
opened by dependabot[bot] 1
Bump actions/checkout from 2 to 2.3.4
Bumps actions/checkout from 2 to 2.3.4.

Release notes

Sourced from actions/checkout's releases.

v2.3.4

Add missing awaits

Swap to Environment Files

v2.3.3

Remove Unneeded commit information from build logs

Add Licensed to verify third party dependencies

v2.3.2

Add Third Party License Information to Dist Files

v2.3.1

Fix default branch resolution for .wiki and when using SSH

v2.3.0

Fallback to the default branch

v2.2.0

Fetch all history for all tags and branches when fetch-depth=0

v2.1.1

Changes to support GHES (here and here)

v2.1.0

Group output

Changes to support GHES alpha release

Persist core.sshCommand for submodules

Add support ssh

Convert submodule SSH URL to HTTPS, when not using SSH

Add submodule support

Follow proxy settings

Fix ref for pr closed event when a pr is merged

Fix issue checking detached when git less than 2.22

Changelog

Sourced from actions/checkout's changelog.

Changelog

v2.3.1

Fix default branch resolution for .wiki and when using SSH

v2.3.0

Fallback to the default branch

v2.2.0

Fetch all history for all tags and branches when fetch-depth=0

v2.1.1

Changes to support GHES (here and here)

v2.1.0

Group output

Changes to support GHES alpha release

Persist core.sshCommand for submodules

Add support ssh

Convert submodule SSH URL to HTTPS, when not using SSH

Add submodule support

Follow proxy settings

Fix ref for pr closed event when a pr is merged

Fix issue checking detached when git less than 2.22

v2.0.0

Do not pass cred on command line

Add input persist-credentials

Fallback to REST API to download repo

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dependencies
opened by dependabot[bot] 1
ARM image ??

It seems that there is no ARM image of docker-network-graph-poc for docker. I received a "exec user process caused: exec format error" response to the docker run command in the README.

uname -a: Linux jellynas 5.4.0-1025-raspi #28-Ubuntu SMP PREEMPT Wed Dec 9 17:10:53 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux.

Many thanks if someone could provide one.

opened by jbgreen 1

Error when a service is not attached to any network

When a container declares no network, docker accepts it. But the tool fails with the following message:

Traceback (most recent call last):
  File "docker-net-graph.py", line 191, in <module>
    generate_graph(args.verbose, args.out)
  File "docker-net-graph.py", line 170, in generate_graph
    draw_link(g, networks, link)
  File "docker-net-graph.py", line 147, in draw_link
    color=networks[link.network_name].color
KeyError: 'none'

opened by Neirda24 1

Use pre-generated colour palette

The current colour generation can result in some pretty ugly and dark colours. A pre-generated palette of around 20 colours could resolve this problem. Once the palette runs out the script can fall back to random colour generation.
enhancement

opened by LeoVerto 1
Bump certifi from 2021.5.30 to 2022.12.7
Bumps certifi from 2021.5.30 to 2022.12.7.

Commits

9e9e840 2022.12.07

b81bdb2 2022.09.24

939a28f 2022.09.14

aca828a 2022.06.15.2

de0eae1 Only use importlib.resources's new files() / Traversable API on Python ≥3.11 ...

b8eb5e9 2022.06.15.1

47fb7ab Fix deprecation warning on Python 3.11 (#199)

b0b48e0 fixes #198 -- update link in license

9d514b4 2022.06.15

4151e88 Add py.typed to MANIFEST.in to package in sdist (#196)

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dependencies python
opened by dependabot[bot] 0
Bump docker/setup-buildx-action from 1 to 2
Bumps docker/setup-buildx-action from 1 to 2.

Release notes

Sourced from docker/setup-buildx-action's releases.

v2.0.0

Node 16 as default runtime by @crazy-max (#131)

This requires a minimum Actions Runner version of v2.285.0, which is by default available in GHES 3.4 or later.

Full Changelog: https://github.com/docker/setup-buildx-action/compare/v1.7.0...v2.0.0

v1.7.0

Standalone mode by @crazy-max in (#119)

Update dev dependencies and workflow by @crazy-max (#114 #130)

Bump tmpl from 1.0.4 to 1.0.5 (#108)

Bump ansi-regex from 5.0.0 to 5.0.1 (#109)

Bump @actions/core from 1.5.0 to 1.6.0 (#110)

Bump actions/checkout from 2 to 3 (#126)

Bump @actions/tool-cache from 1.7.1 to 1.7.2 (#128)

Bump @actions/exec from 1.1.0 to 1.1.1 (#129)

Bump minimist from 1.2.5 to 1.2.6 (#132)

Bump codecov/codecov-action from 2 to 3 (#133)

Bump semver from 7.3.5 to 7.3.7 (#136)

v1.6.0

Add config-inline input (#106)

Bump @actions/core from 1.4.0 to 1.5.0 (#104)

Bump codecov/codecov-action from 1 to 2 (#101)

v1.5.1

Explicit version spec for caching (#100)

v1.5.0

Allow building buildx from source (#99)

v1.4.1

Fix docker: invalid reference format (#97)

v1.4.0

Update dev deps (#95)

Use built-in getExecOutput (#94)

Use core.getBooleanInput (#93)

Bump @actions/exec from 1.0.4 to 1.1.0 (#85)

Bump y18n from 4.0.0 to 4.0.3 (#91)

Bump hosted-git-info from 2.8.8 to 2.8.9 (#89)

Bump ws from 7.3.1 to 7.5.0 (#90)

Bump @actions/tool-cache from 1.6.1 to 1.7.1 (#82 #86)

Bump @actions/core from 1.2.7 to 1.4.0 (#80 #87)

v1.3.0

Display BuildKit version (#72)

v1.2.0

Remove os limitation (#71)

Add test job for config input (#68)

... (truncated)

Commits

dc7b971 Merge pull request #131 from crazy-max/node16

f55bc08 Merge pull request #141 from crazy-max/fix-test

aa877a9 ci: fix standalone test

130c56f Node 16 as default runtime

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dependencies
opened by dependabot[bot] 0
Bump docker/setup-qemu-action from 1 to 2
Bumps docker/setup-qemu-action from 1 to 2.

Release notes

Sourced from docker/setup-qemu-action's releases.

v2.0.0

Node 16 as default runtime by @crazy-max (#48)

This requires a minimum Actions Runner version of v2.285.0, which is by default available in GHES 3.4 or later.

chore: update dev dependencies and workflow by @crazy-max (#43 #47)

Bump @actions/core from 1.3.0 to 1.6.0 (#37 #39 #41)

Bump @actions/exec from 1.0.4 to 1.1.1 (#38 #46)

Full Changelog: https://github.com/docker/setup-qemu-action/compare/v1.2.0...v2.0.0

v1.2.0

Display image information (#36)

Bump @actions/core from 1.2.7 to 1.3.0 (#35)

v1.1.0

Remove os limitation (#30)

Bump @actions/core from 1.2.6 to 1.2.7 (#29)

v1.0.2

Enhance workflow (#26)

Container based developer flow (#19 #20)

v1.0.1

Fix CVE-2020-15228

Commits

8b12248 Merge pull request #48 from crazy-max/node-16

466d531 Merge pull request #50 from crazy-max/update-readme

607c192 simplify usage example

d7849ec Node 16 as default runtime

2d4bfe7 Merge pull request #47 from crazy-max/update-dev

224b802 chore: update dev dependencies and workflow

95bd865 Merge pull request #46 from docker/dependabot/npm_and_yarn/actions/exec-1.1.1

cfd091f Bump @actions/exec from 1.1.0 to 1.1.1

d2a6030 Merge pull request #45 from docker/dependabot/github_actions/actions/checkout-3

97dc484 Bump actions/checkout from 2 to 3

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dependencies
opened by dependabot[bot] 0
Bump docker/build-push-action from 2 to 3
Bumps docker/build-push-action from 2 to 3.

Release notes

Sourced from docker/build-push-action's releases.

v3.0.0

Node 16 as default runtime by @crazy-max (#564)

This requires a minimum Actions Runner version of v2.285.0, which is by default available in GHES 3.4 or later.

Standalone mode support by @crazy-max (#601 #609)

chore: update dev dependencies and workflow by @crazy-max (#571)

Bump @actions/exec from 1.1.0 to 1.1.1 (#573)

Bump @actions/github from 5.0.0 to 5.0.1 (#582)

Bump minimist from 1.2.5 to 1.2.6 (#584)

Bump semver from 7.3.5 to 7.3.7 (#595)

Bump csv-parse from 4.16.3 to 5.0.4 (#533)

Full Changelog: https://github.com/docker/build-push-action/compare/v2.10.0...v3.0.0

v2.10.0

Add imageid output and use metadata to set digest output (#569)

Add build-contexts input (#563)

Enhance outputs display (#559)

v2.9.0

add-hosts input (#553 #555)

Fix git context subdir example and improve README (#552)

Add e2e tests for ACR (#548)

Add description on github-token option to README (#544)

Bump node-fetch from 2.6.1 to 2.6.7 (#549)

v2.8.0

Allow specifying subdirectory with default git context (#531)

Add cgroup-parent, shm-size, ulimit inputs (#501)

Don't set outputs if empty or nil (#470)

docs: example to sanitize tags with metadata-action (#476)

docs: wrong syntax to sanitize repo slug (#475)

docs: test before pushing your image (#455)

readme: remove v1 section (#500)

ci: virtual env file system info (#510)

dev: update workflow (#499)

Bump @actions/core from 1.5.0 to 1.6.0 (#160)

Bump ansi-regex from 5.0.0 to 5.0.1 (#469)

Bump tmpl from 1.0.4 to 1.0.5 (#465)

Bump csv-parse from 4.16.0 to 4.16.3 (#451 #459)

v2.7.0

Add metadata output (#412)

Bump @actions/core from 1.4.0 to 1.5.0 (#439)

Add note to sanitize tags (#426)

Cache backend API docs (#406)

Git context now supports subdir (#407)

Bump codecov/codecov-action from 1 to 2 (#415)

v2.6.1

Small typo and ensure trimmed output (#400)

... (truncated)

Commits

e551b19 Merge pull request #564 from crazy-max/node-16

3554377 Merge pull request #609 from crazy-max/ci-fix-test

a62bc1b ci: fix standalone test

c208583 Merge pull request #601 from crazy-max/standalone-mode

fcd9124 Merge pull request #607 from docker/dependabot/github_actions/docker/metadata...

0ebe720 Bump docker/metadata-action from 3 to 4

38b4580 Standalone mode support

ba31738 Merge pull request #533 from docker/dependabot/npm_and_yarn/csv-parse-5.0.4

43721d2 Update generated content

5ea21bf Fix csv-parse implementation since major update

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dependencies
opened by dependabot[bot] 0
Bump docker/login-action from 1 to 2
Bumps docker/login-action from 1 to 2.

Release notes

Sourced from docker/login-action's releases.

v2.0.0

Node 16 as default runtime by @crazy-max (#161)

This requires a minimum Actions Runner version of v2.285.0, which is by default available in GHES 3.4 or later.

chore: update dev dependencies and workflow by @crazy-max (#170)

Bump @actions/exec from 1.1.0 to 1.1.1 (#167)

Bump @actions/io from 1.1.1 to 1.1.2 (#168)

Bump minimist from 1.2.5 to 1.2.6 (#176)

Bump https-proxy-agent from 5.0.0 to 5.0.1 (#182)

Full Changelog: https://github.com/docker/login-action/compare/v1.14.1...v2.0.0

v1.14.1

Revert to Node 12 as default runtime to fix issue for GHE users (#160)

v1.14.0

Update to node 16 (#158)

Bump @aws-sdk/client-ecr from 3.45.0 to 3.53.0 (#157)

Bump @aws-sdk/client-ecr-public from 3.45.0 to 3.53.0 (#156)

v1.13.0

Handle proxy settings for aws-sdk (#152)

Workload identity based authentication docs for GCR and GAR (#112)

Test login against ACR (#49)

Bump @aws-sdk/client-ecr from 3.44.0 to 3.45.0 (#132)

Bump @aws-sdk/client-ecr-public from 3.43.0 to 3.45.0 (#131)

v1.12.0

ECR: only set credentials if username and password are specified (#128)

Refactor to use aws-sdk v3 (#128)

v1.11.0

ECR: switch implementation to use the AWS SDK (#126)

ecr input to specify whether the given registry is ECR (#123)

Test against Windows runner (#126)

Update instructions for Google registry (#127)

Update dev workflow (#111)

Small changes for GHCR doc (#86)

Update dev dependencies (#85)

Bump ansi-regex from 5.0.0 to 5.0.1 (#101)

Bump tmpl from 1.0.4 to 1.0.5 (#100)

Bump @actions/core from 1.4.0 to 1.6.0 (#94 #103)

Bump codecov/codecov-action from 1 to 2 (#88)

Bump hosted-git-info from 2.8.8 to 2.8.9 (#83)

Bump node-notifier from 8.0.0 to 8.0.2 (#82)

Bump ws from 7.3.1 to 7.5.0 (#81)

Bump lodash from 4.17.20 to 4.17.21 (#80)

Bump y18n from 4.0.0 to 4.0.3 (#79)

v1.10.0

GitHub Packages Docker Registry deprecated (#78)

... (truncated)

Commits

49ed152 Merge pull request #161 from crazy-max/node16-runtime

b61a9ce Node 16 as default runtime

3a136a8 Merge pull request #182 from docker/dependabot/npm_and_yarn/https-proxy-agent...

b312880 Update generated content

795794e Bump https-proxy-agent from 5.0.0 to 5.0.1

1edf618 Merge pull request #179 from docker/dependabot/github_actions/codecov/codecov...

8e66ad4 Bump codecov/codecov-action from 2 to 3

7c79b59 Merge pull request #176 from docker/dependabot/npm_and_yarn/minimist-1.2.6

24a38e0 Bump minimist from 1.2.5 to 1.2.6

70e1ff8 Merge pull request #170 from crazy-max/eslint

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dependencies
opened by dependabot[bot] 0

GraphViz not present in Docker image

When trying to render the dot output directly through the Docker image, it complaines about a missing dependency:

root@panda ~/.tmp # docker run --rm -v /var/run/docker.sock:/var/run/docker.sock:ro -v ${PWD}:/usr/src/app/.tmp leoverto/docker-network-graph -o .tmp/panda.svg                      
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/graphviz/backend.py", line 164, in run
    proc = subprocess.Popen(cmd, startupinfo=get_startupinfo(), **kwargs)
  File "/usr/local/lib/python3.9/subprocess.py", line 951, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/local/lib/python3.9/subprocess.py", line 1821, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'dot'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/src/app/docker-net-graph.py", line 211, in <module>
    generate_graph(args.verbose, args.out)
  File "/usr/src/app/docker-net-graph.py", line 193, in generate_graph
    g.render(base)
  File "/usr/local/lib/python3.9/site-packages/graphviz/files.py", line 243, in render
    rendered = backend.render(self._engine, format, filepath,
  File "/usr/local/lib/python3.9/site-packages/graphviz/backend.py", line 223, in render
    run(cmd, capture_output=True, cwd=cwd, check=True, quiet=quiet)
  File "/usr/local/lib/python3.9/site-packages/graphviz/backend.py", line 167, in run
    raise ExecutableNotFound(cmd)
graphviz.backend.ExecutableNotFound: failed to execute ['dot', '-Ksfdp', '-Tsvg', '-O', 'panda'], make sure the Graphviz executables are on your systems' PATH

opened by almereyda 1

Owner

Leo Verto

Free software. Python. DevOps. Docker. Kubernetes.

GitHub https://hub.docker.com/r/leoverto/docker-network-graph/

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Quickly visualize docker networks with graphviz.

Related tags

Overview

Docker Network Graph

Example

Usage

Running inside docker

Development

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