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Multicloud use-case based multihost async provisioner for CIs and testing during development

Project description

mrack

Important: most of the described below is not implemented yet

Provisioning library for CI and local multi-host testing supporting multiple provisioning providers e.g. OpenStack, libvirt, containers, Beaker).

But in comparison to multi-cloud libraries, the aim is to be able to describe host from application perspective. E.g.:

network: IPv4
hosts:
- name: master.testdomain.test
  role: master
  group: ipaserver
  os: fedora-31
- name: client.testdomain.test
  role: client
  group: ipaclient
  os: fedora-30

This is then combined with provisioning configuration where each provider has defined meaning for role, group, os params which e.g. translates to flavors, images, ...

provider: openstack  # default provider
openstack:
  images:
    fedora-30: Fedora-Cloud-Base-30-compose-latest
    fedora-31: Fedora-Cloud-Base-31
  flavors:
    ipaserver: ci.m1.medium
    ipaclient: ci.m1.micro
  networks:
    IPv4: net_ci_4
    IPv6: net_ipv6_only
    dual: net_cci_4_6
  keypair: ipa_key
beaker:
  distros:
    fedora-30: FEDORA-30%
    fodora-31: FEDORA-31%

So then user can quickly change provisioning location just by changing provider name without needing to redefine the provider/cloud specifics. This is especially useful for a lot of jobs sharing the same app specific provisioner configuration.

provider: beaker

Or each host can use a different provider:

hosts:
- name: master.testdomain.test
  role: master
  group: ipaserver
  os: fedora-31
  provider: openstack
  network: dual
- name: client.testdomain.test
  role: client
  group: ipaclient
  os: fedora-30
  provider: beaker

The output is then Ansible inventory with correct group mapping and information which allows to SSH to the machines.

TODO: example

Installation

pip install mrack

Run

Atm there is no CLI and it is implemented as Python library

import mrack
# TODO

Contribute

Projects is using black formater to keep consistent formatting, flake8 and pydocstyle to ensure following Python good practices.

Contributions (Pull Requests) are welcome. It is expected that they will pass tox tests and include unit tests for new code.

Black formatting

Expected formatting can be achived by running:

$ make format

Look into black documentation for possible integration in editors/IDEs.

Testing

Just run tox to execute all tests and linters

$ tox

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