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Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
2020-05-09 17:54:44 -04:00

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Podman Compose

An implementation of docker-compose with Podman backend. The main objective of this project is to be able to run docker-compose.yml unmodified and rootless. This project is aimed to provide drop-in replacement for docker-compose, and it's very useful for certain cases because:

  • can run rootless
  • only depend on podman and Python3 and PyYAML
  • no daemon, no setup.
  • can be used by developers to run single-machine containerized stacks using single familiar YAML file

For production-like single-machine containerized environment consider

For the real thing (multi-node clusters) check any production OpenShift/Kubernetes distribution like OKD.

NOTE

This project is still underdevelopment.

Installation

Install latest stable version from PyPI:

pip3 install podman-compose

pass --user to install inside regular user home without being root.

Or latest development version from GitHub:

pip3 install https://github.com/containers/podman-compose/archive/devel.tar.gz

or

curl -o /usr/local/bin/podman-compose https://raw.githubusercontent.com/containers/podman-compose/devel/podman_compose.py
chmod +x /usr/local/bin/podman-compose

or

curl -o ~/.local/bin/podman-compose https://raw.githubusercontent.com/containers/podman-compose/devel/podman_compose.py
chmod +x ~/.local/bin/podman-compose

or install from Fedora (starting from f31) repositories:

sudo dnf install podman-compose

Basic Usage

We have included fully functional sample stacks inside examples/ directory.

A quick example would be

cd examples/busybox
podman-compose --help
podman-compose up --help
podman-compose up

A more rich example can be found in examples/awx3 which have

  • A Postgres Database
  • RabbitMQ server
  • MemCached server
  • a django web server
  • a django tasks

When testing the AWX3 example, if you got errors just wait for db migrations to end.

Tests

Inside tests/ directory we have many useless docker-compose stacks that are meant to test as much cases as we can to make sure we are compatible

How it works

The default mapping 1podfw creates a single pod and attach all containers to its network namespace so that all containers talk via localhost. For more information see docs/Mappings.md.

If you are running as root, you might use identity mapping.