Orchestrate any number of orchestras (i.e. config management environements).
'Pet' vs. 'herd'? This is the 'stable' approach!
We started with cfengine to automate our server landscape, we even configured and administrated a mesh network based on embedded boxes based on linux/ulibc-busybox and cfengine at the time it was the only automation solution out there.
Today we have several customers with different configuration management systems already in use. There is ansible, salt, and even some homebrew solution, we currently use in different projects on different customer sites and we also have debops and cfengine for our servers in place. So we started to read about reclass..
The central idea behind maestro is to build a knowledge base (CMDB) that can be used by several configuration management tools. It must be flexible enough to be split up as needed and simple enough such that one can work on several projects without having to think too much.
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The meta data is stored with reclass[1], the actual work on the hosts is done via ansible[2] playbooks, the core can be found under common-playbooks[3], but is easily extensible. This connector supports also simple merging of plain config files and other little tricks..
It is currently written in bash and gawk (see [4]), but will probably be rewritten in python[5] soon.
-- [1] http://reclass.pantsfullofunix.net/