Re: [Cfengine] copy: templates

[Y99]

yep, but you have to upgrade. The "singlecopy" function is avaible in
v2.0.5.

> Will Lowe wrote:
> > I'm using cfengine 2.x (right now 2.0.4, but I don't mind upgrading)
> > under Debian woody.  Let's say I have several variables set in my
> > cfagent program named $cfgroot, $site, $type, and $host, with the
> > obvious meanings.
> > 
> > I'd like to do something like this:
> > 
> > copy:
> > 
> >     $cfgroot/$host/etc/resolv.conf dest=/etc/resolv.conf recurse=inf
> > # if it exists, otherwise try:
> >     $cfgroot/$type/etc/resolv.conf dest=/etc/resolv.conf recurse=inf
> > # if it exists, otherwise try:
> >     $cfgroot/$site/etc/resolv.conf dest=/etc/resolv.conf recurse=inf
> > # if it exists, otherwise try:
> >     $cfgroot/default/etc/resolv.conf dest=/etc/resolv.conf recurse=inf
> > 
> > .. in other words, I'd like to be able to maintain (possibly partial)
> > sets of configs for each of $site, $type, $host, and a default set,
> > and have cfengine automatically find the "most specific" action to
> > apply.
> > 
> > An additonal catch is that I'd like to do it for *every* *single* copy
> > statement anywhere in the cfagent config (find the most specific
> > resolv.conf, the most specific set of apache configs, the most
> > specific /etc/nsswitch.conf, etc.) -- a generic templating system.
> > 
> > Using groups/classes might be possible:
> > 
> > sitefoo.farma:
> >     copy resolv.conf.1234
> > 
> > sitefoo.!farmb.farmc.!sitebar:
> >     copy resolv.conf.4321
> > 
> > siteBaz.farmF:
> >         copy resolv.conf.0987
> > 
> > .. but with 15 farms, 1000 servers, and 10 sites, the number of
> > possibly needed rules becomes insane.  It'd be a lot simpler if
> > cfengine could find the "best match" somehow on its own ... any ideas?
> > 
> 
> I think the trick is: (From the reference manual)
> SingleCopy
> 
> 
>               singlecopy = ( on )
> 
> 
> 
> If singlecopy is defined the behavior of copy: is modified so that a 
> file will only be copied once, helping to achieve hierarchical or "most 
> specific" file copy overrides, provided that the most specific file 
> occurs first. With the following file structure on a host running cfservd:
> 
> /dist/hosts/loghost1.example.com/etc/syslog.conf 
> /dist/solaris/etc/syslog.conf /dist/all/etc/syslog.conf
> 
> The configuration:
> 
>       control:
>               singlecopy = ( on )
> 
>       copy:
> 
>        /dist/${fqhost}       dest=/ inform=true syslog=true r=inf 
> server=disthost
>        /dist/${ostype}       dest=/ inform=true syslog=true r=inf 
> server=disthost
>        /dist/all             dest=/ inform=true syslog=true r=inf 
> server=disthost
> 
> 
> 
> Would result in:
> 
>       /dist/hosts/loghost1.example.com/etc/syslog.conf being copied to 
> loghost1.example.com
>       /dist/solaris/etc/syslog.conf being copied to Solaris systems
>       /dist/all/etc/syslog.conf being copied to all other systems
> 
> 
> -- 
> --
> ********************************************************************
> *                                                                  *
> *  Bas van der Vlies                     e-mail: basv@sara.nl      *
> *  SARA - Academic Computing Services    phone:  +31 20 592 8012   *
> *  Kruislaan 415                         fax:    +31 20 6683167    *
> *  1098 SJ Amsterdam                                               *
> *                                                                  *
> ********************************************************************
> 
> 
> 
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