Re: Réf.: Re: Using variables in classes definition

[Wipf, Stefan]

Unless your script needs to know about all servers you could do this:

classes:
  i_am_a_server = ( host1 host2 )

control:
  i_am_a_server::  server = ( "${host}" )



paguerlais@airfrance.fr wrote:
> 
> It doesn't work because this syntax defines i_am_a_server as soon as the
> command ends with a null status. Which is quite always the case with echo.
> 
> help-cfengine-bounces+paguerlais=airfrance.fr@gnu.org@zot.com> le
> 11/02/2003 04:09:59
> 
> Envoyé par :      Chris Edillon <jce@zot.com>
> 
> Pour : paguerlais@airfrance.fr
> cc :   help-cfengine@gnu.org, patrice.guerlais@libertysurf.fr
> 
> Objet :     Re: Using variables in classes definition
> 
> On Mon, 10 Feb 2003 paguerlais@airfrance.fr wrote:
> 
> > I need to define a variable and a class depending on that variable.
> > Something like :
> >
> > <example>
> > control:
> >       servers = ( host1 host2 )
> >
> > classes:
> >       i_am_a_server = ( ${servers} )
> > </example>
> > It doesn't work because :
> > - ${servers} must be enclosed in quotes for syntax needs
> > - if ${servers} is enclose in quotes, it is considered as a command+
> > parameters which must be executed and whose result is used to defined
> > i_am_a_server.
> >
> > I need both the variable and the class because somewhere later in my
> script
> > I give the variable value as a parameter to an external script
> > (shellcommands), and some sections of the script are activated only if
> the
> > running host belongs to the list "servers".
> > Of course I can repeat the hosts list on the "i_am_a_server" class
> > definition, but each time I modify "servers" I must then think to modify
> > also "i_am_a_server" :-(
> >
> > I couldn't find something in the docs. Does somebody has any idea ?
> >
>   the following is weird, but it works:
> 
> control:
>     servers = ( host1 host2 )
> 
> classes:
>     i_am_a_server = ( "/bin/echo $(servers)" )
> 
> chris
> 
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-- 
Stefan Wipf
swipf@htc.com