Diki

Diki a "compliance checker" or sorts, a detective control framework with pluggable rule sets. It's part of the Gardener family, but can be used also on other Kubernetes distros or even on non-Kubernetes environments, e.g. to check compliance of your hyperscaler accounts.

Diki is the Greek word for "trial". You can also memorise it as "Detective Investigation of Key Imperatives" or as GNU-style recursive acronym "Diki Investigates Key Imperatives". It's colloquially known as "Don't I Know It", which is a nice fit as well for what it does.

Important

This repository is actively developing. APIs can change without any backwards compatibility.

Getting Started

Installation

If you install via GitHub releases, you need to put the diki binary on your path.

A sample install snippet for macOS can look like this:

# Example for macOS

# set operating system and architecture
os=darwin # choose between darwin, linux, windows
arch=amd64 # choose between amd64, arm64

# Get latest version. Alternatively set your desired version
version=$(curl -Ls -H 'Accept: application/json' https://github.com/gardener/diki/releases/latest | jq -r '.tag_name')

# Download diki
curl -LO "https://github.com/gardener/diki/releases/download/${version}/diki-${os}-${arch}"

# Make the diki binary executable
chmod +x "./diki-${os}-${arch}"

# Move the binary in to your PATH
sudo mv "./diki-${os}-${arch}" /usr/local/bin/diki

Run

Most of Diki's run configurations are provided through its config file. Options depend on the different providers and rulesets. Here are a couple of commands to get you started:

• Run all known rulesets for all known providers

diki run \
    --config=config.yaml \
    --all

• Run all known rulesets for all known providers and create a summary json report file

diki run \
    --config=config.yaml \
    --all \
    --output=./report.json

• Run a specific ruleset for a known provider

diki run \
    --config=config.yaml \
    --provider=gardener \
    --ruleset-id=disa-kubernetes-stig \
    --ruleset-version=v2r1

• Run a specific rule defined in a ruleset for a known provider

diki run \
    --config=config.yaml \
    --provider=gardener \
    --ruleset-id=disa-kubernetes-stig \
    --ruleset-version=v2r1 \
    --rule-id=242414

Report

Diki can generate a human readable report from the output files of a diki run execution. Merged reports can be produced by setting the distinct-by flag. The value of this flag is a list of key=value pairs where the keys are the IDs of the providers we want to include in the merged report and the values are the unique metadata fields to be used as distinction values between different provider runs.

• Generate an html report

diki report generate \
    --output=report.html \
    output.json

• Generate merged html report

diki report generate \
    --distinct-by=gardener=id \
    --output=report.html \
    output1.json output2.json

Difference

Diki can generate a json containing the difference between two output files of diki run executions. This can help to identify improvements (or regressions). A human readable html difference report can be generated from the difference reports.

• Generate json difference between two reports

diki report diff \
    --title=Title \
    --old=output1.json \
    --new=output2.json \
    --output=difference.json

• Combine one or more json difference reports to an html report.

diki report generate diff \
    --identity-attributes=gardener=id \
    --output=difference.html \
    difference1.json difference2.json

Unit Tests

You can manually run the tests via make test.

Contributing

Contributions are very welcome. To learn more, see the contributor guide.

Credits

A special thank you to @vlerenc, @AleksandarSavchev and @dimityrmirchev who made significant contributions to the project before it was made available to the public.