propellor/README

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This is a work in progress configuration management system using Haskell
and Git.
2014-03-30 06:44:40 +00:00
The design is intentionally very bare bones: Propellor enures that
the system it's run in satisfies a list of properties, taking action as
necessary when a property is not yet met.
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Propellor lives in a git repository, and so to set it up it's cloned
to a system, and "make" can be used to pull down any new changes,
and compile and run propellor. This can be done by a cron job. Or something
can ssh in and run it.
2014-03-30 06:44:40 +00:00
For bootstrapping, propellor compiles to a single binary file,
which can be transferred to a host and run.
Properties are defined using Haskell. There is no special language as used
in puppet, chef, ansible, etc, just the full power of Haskell. Hopefully
that power can be put to good use in making declarative properties that are
powerful, nicely idempotent, and easy to adapt to a system's special needs.
Also avoided is any form of node classification. Ie, which hosts are part
of which classes and share which configuration. It might be nice to use
reclass[1], but then again a host is configured using simply haskell code,
and it should be easy to factor out things like classes of hosts in an
ad-hoc fashion.
[1] http://reclass.pantsfullofunix.net/