FAI and yaml [Work in progress]

[Thomas Neumann]

hiya

As mentioned at the linux workshop I'm in the process of combining fai 
with yaml-configuration files. My reason is a very wide range of 
supported configurations. Using classes is quite cumbersome.

As an example I attached the config file for one of our servers, so you 
can get a general idea how this could pan out. (The format is not final 
-> work in progress!)

use cases:
- use the file as an interface between class/ and the rest of fai
- use as input for a configuration management software
- let the user manually create such a file and use it for generic fai 
scripts (make first steps with fai easier?)


Since we're in the process of switching database layouts the first use 
case is the most important to me at the moment. I have two different 
configuration backends which both generate the same yaml-files. (In our 
cases both backends are databases, but it could also be a dns, ldap or 
no backend at all (store and use files directly). In the end there is a 
distinct line between configuration logic (class/) and execution logic 
(scripts/, hooks/).

On a sidenote: I think it is possible to use yaml as a superset to 
classes - it should be possible to use a yaml-file as input and create 
appropriate classes on the fly.

example:

config:
   ipv6: false
ssh:
   server:
     enabled: true
     rootlogin: true
     passwordauth: false

could be turned into

no_config_ipv6
ssh_server_enabled
ssh_server_rootlogin
no_ssh_server_passwordauth

tschüß
thomas
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: example_beldin.yaml
Url: http://lists.uni-koeln.de/pipermail/linux-fai/attachments/20100719/6bf897a0/attachment.bat