pyinfra 0.2

Deploy stuff by diff-ing the state you want against the remote server.

pyinfra automates service deployment. It does this by diff-ing the state of the server with the state defined in the deploy script. Deploys are asyncronous and highly performant. The inventory & deploy are managed with pure Python, allowing for near-infinite extendability.

• Getting started
• Documentation
• Example deploy
• API Example
• How the deploy works

Design Features

pyinfra was designed from day one to enable ops to deploy things in a consistent, debuggable and maintainable manner. Notable design decisions:

• outputs shell commands and files to upload
• two-step deploy that enables dry-runs
• fail fast where possible (eg touching a directory)
• -v means print out remote stdout & stderr in realtime
• always print raw stderr on operation failure for instant debugging
• uses pure, 100% Python for the inventory and deploy scripts
  • with operations/hooks to safely use Python mid-deploy
• properly agentless - even Python isn’t required on the remote side (just a shell!)

Development

pyinfra is still under heavy development, and while the CLI/API should be considered fairly stable there’s no guarantee of no breaking changes until v1. There are a number of critical specifications to be properly fleshed out before the v1 release:

• spec/docs for roles/sub-deploys
• spec/docs for extension modules/facts
• spec/docs for extension deploys

To develop pyinfra itself:

# Create a virtualenv
venv create pyinfra

# Install pyinfra in dev mode, with dev requirements
pip install -e .[dev]

Use nosetests or the bundled helper script to run tests. This helper script also counts coverage:

# Test everything (API, modules & facts)
scripts/test.sh

# Set individual bits
scripts/test.sh [api|modules|facts]