On Tue, Jun 07, 2011 at 11:14:16AM -0400, no-re...@cfengine.com wrote:
>Forum: Cfengine Help
>Subject: Class exception.
>Author: chadpatt
>Link to topic: https://cfengine.com/forum/read.php?3,22379,22379#msg-22379
>
>This might be confusing but here it goes.
>
>I have a list of servers defined by group classes. I have some db servers
>that are in the main group "all" but in a sub group "database". What I want
>to do is have my class so that "all" servers get a promise except for
>"database".
>
>would that look like?
>all|!database:: OR something else. The reason I need this is there are
>hundreds of classes inside all and I want to just weed out database.
You can combine boolean operators. Cfengine supports a syntax that
combines logical AND, OR, NOT, and grouping constructs. It also
supports "and", "or", "not", and "xor" expressions for defining new
classes.
In your example, I think you want to do soemthing like this:
bundle agent foo {
classes:
'all' or => { 'a', 'b', 'c' };
'databases' or => { 'c' };
reports:
all:
"Host ${sys.fqhost} is in 'all' class.";
all.!databases::
"Host ${sys.fqhost} is in 'all' class, but not in 'databases'.";
}
This, while untested, should print two reports each for hosts 'a' and
'b', but only one report for host 'c'.
See these for reference:
http://www.cfengine.org/manuals/cf3-reference.html#Class-combination-operators-and-precedence
http://www.cfengine.org/manuals/cf3-reference.html#classes-in-common-promises
--
Jesse Becker
NHGRI Linux support (Digicon Contractor)
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