Marc Baudoin <baud...@stg-interactive.com> écrit :
>
> As the number of different types of hosts in my configuration
> grows, I wonder what are the strategies for making bundlesequence
> and inputs more modular.
>
> I define a class for each type of hosts so, of course, there's
> the class approach:
>
> body common control
> {
> class1::
>
> bundlesequence => { "common" , "specific1"} ;
> inputs => { "common.cf" , "specific1.cf" } ;
>
> class2::
>
> bundlesequence => { "common" , "specific2"} ;
> inputs => { "common.cf" , "specific2.cf" } ;
> }
>
> But what if a client belongs both to class1 and class2?
>
> My main goal is to avoid redundancies. The common parts of
> bundlesequence and inputs can go into an slist, that's fine.
>
> I tried to define another slist variable to handle the specific
> parts of bundlesequence and inputs. My idea was to begin vith an
> empty slist (now that we can use "cf_null") and then add bundles
> and inputs for each class the client belongs to. But it's not
> possible to use the slist as in:
>
> "specific" slist => { @(specific) , "other_stuff" } ;
>
> and I found no way to add elements to an existing slist.
>
> So I'm stuck here with no elegant solution to my problem.
>
> How do people with a non-trivial configuration deal with this?
Thank you to Daniel V. Klein, Michael Potter and Bas van der
Vlies for their replies.
I went for this approach:
promises.cf:
-----------------------------------------------------------------
body common control
{
bundlesequence =>
{
@(g.bundlesequence) ,
} ;
ignore_missing_inputs => "true" ;
inputs =>
{
"cfengine_stdlib.cf" ,
"common.cf" ,
@(g.inputs) ,
} ;
}
-----------------------------------------------------------------
common.cf:
-----------------------------------------------------------------
bundle common g
{
classes:
# definition of classes
vars:
dns::
"bundlesequence_dns"
comment => "bundlesequence for DNS servers" ,
slist =>
{
"dns" ,
} ;
"inputs_dns"
comment => "inputs for DNS servers" ,
slist =>
{
"dns.cf" ,
} ;
# add more classes here
any::
"bundlesequence"
comment => "bundlesequence" ,
policy => "ifdefined" ,
slist =>
{
"common_bundlesequences" ,
@(bundlesequence_dns) ,
# add more here
} ;
"inputs"
comment => "inputs" ,
policy => "ifdefined" ,
slist =>
{
"common_inputs.cf" ,
@(inputs_dns) ,
# add more here
} ;
}
-----------------------------------------------------------------
--
Marc Baudoin
STG Interactive
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