kodman 1.1.0

A command-line tool that provides a Docker-like interface for Kubernetes operations

Kodman

A command-line tool that provides a Docker-like experience with a Kubernetes backend.

An example use case would be to facilitate a single CI script where the runner may sometimes be a host with Docker (possibly run locally) and other times a Kubernetes executor where Docker-in-Docker is not possible (such as a Gitlab runner).

Source	https://github.com/epics-containers/Kodman
PyPI	pip install kodman
Releases	https://github.com/epics-containers/Kodman/releases

Some examples:

Hello-world:

kodman run --rm hello-world

Handling exit codes:

kodman run --entrypoint bash --rm ubuntu -c "echo Enter; exit 1" && echo "You shall not pass"

Add files or directories into the pod filesystem:

mkdir demo
echo "Mellon" > demo/token.txt
kodman run -v ./demo:/demo --rm ubuntu bash -c "cat demo/token.txt"

Usage:

From outside of the cluster kodman will use your current Kubernetes context (the same as your current kubectl context).

From inside the cluster kodman will use the serviceAccount mounted by default.

Permissions

A minimal Kubernetes RBAC role definition can be found in .github/manifests

Design decisions

Why argparse over click/typer?

The docker cli api is not POSIX compliant.

For example: docker run --network=host imageID dnf -y install java

Click/Typer does not allow this (and is correct). They would expect: docker run --network=host imageID -- dnf -y install java

See Section 12.2 Guideline 10 https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html#tag_12_02