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Re: [Fwd: Re: ${clientip} ?]


From: Mark Burgess
Subject: Re: [Fwd: Re: ${clientip} ?]
Date: Fri, 22 Oct 2004 08:44:36 +0200
User-agent: Mutt/1.4.2i

I do not understand the logic of using scp here. copy is still
a better solution in that case. I am not sure why you need a remote
method here at all. If you are collecting a file and simply wwant
to copy it to a hostname dependenent place, but put the hostname
in the destination file?

control:

 rhost = ( a:b:c )

copy:

 /from dest=$(rhost)-copy server=$(rhost)

M

On Thu, Oct 21, 2004 at 04:21:48PM -0700, Tod Oace wrote:
> On Oct 21, 2004, at 16:12, Ed Brown wrote:
> 
> >I assume you are talking about 'remote methods'?
> 
> Yep!
> 
> >There's not much info in the documentation about it yet, but it sure 
> >sounds complex, if not to say convoluted.
> 
> Possibly. I don't have any opinion on that yet.
> 
> >For one, I'm guessing it requires that cfservd be running everywhere.
> 
> I don't think so. If I understand it correctly the method call contacts 
> a cfservd which then runs cfagent, runs the method and then returns 
> results back to the caller. I just want to collect information on my 
> cfengine servers which are already running cfservd. I don't think the 
> method call tries to contact a cfservd on the client system.
> 
> I haven't tried the remote stuff yet. I'm just doing local calls while 
> I develop my module. And right now I'm trying to figure out why this 
> isn't matching infotype = syslog (to prevent "../filename"):
> 
> classes:
>         valid_infotype = ( Regcmp("^[A-Za-z0-9]*$","${infotype}") )
> 
> "^.*$" works but anything I try with "^[...]*$" doesn't. But...this is 
> a separate issue.
> 
> >When I've considered data gathering schemes, I always end up back at 
> >the idea of scp-ing info back to the server, or somewhere, an idea 
> >with its own limitations and problems.  I'd be interested in hearing 
> >if you are able to use cfengine for this.
> 
> Yeah, I'll probably have to do that if I can't make remote methods 
> work. It still looks to me like it will, although I'm noticing ReadFile 
> produced a bunch of nul padding. So I'll have to figure that out too. 
> But aside from that I was able to copy up a file. Locally anyway.  -Tod
> 
> >-Ed
> >
> >
> >On Thu, 2004-10-21 at 16:02, Tod Oace wrote:
> >>>(Dang, I don't understand lists that don't set the reply-to field to 
> >>>go
> >>>to the list.  To me, that's the whole point of a list, the 
> >>>discussion,
> >>>not to get private answers to questions, unless appropriate for some
> >>>reason...)
> >>
> >>Oh, and that case here's my reply to the list:
> >>
> >>>From: Ed Brown <address@hidden>
> >>>Date: October 21, 2004 14:56:55 PDT
> >>>To: Tod Oace <address@hidden>
> >>>Subject: Re: ${clientip} ?
> >>>
> >>>
> >>>Where I get stuck right away when considering something like this is
> >>>the
> >>>question of how to get information from the client to the server.  
> >>>It's
> >>>backwards to the normal flow of cfengine.  Did you already have a
> >>>mechanism for this in mind?
> >>
> >>Yeah... A Cfengine method call. There's even an example in the
> >>reference manual passing the first part of /etc/passwd:
> >>
> >>http://www.cfengine.org/docs/cfengine-Reference.html#methods
> >>
> >>search for: ReadFile("/etc/passwd"
> >>
> >>So I *think* that takes care of the communication mechanism. I'm 
> >>toying
> >>with it now. But I'm also thinking about the step after that.  -Tod
> >>
> >>
> >>>-Ed
> >>>
> >>>
> >>>On Thu, 2004-10-21 at 15:41, Tod Oace wrote:
> >>>>I'm hoping to create a method to collect small bits of information
> >>>>from
> >>>>systems onto my cfengine servers. It seems like this will work fine
> >>>>but
> >>>>I'd also like to prevent systems from being able to clobber each
> >>>>others' bits of information.
> >>>>
> >>>>I think what I want is to stash information into files named
> >>>>.../somedirectory/${clientip}/${infotype} where ${infotype} comes 
> >>>>from
> >>>>the client and ${clientip} is defined on the server end. But I'm
> >>>>unable
> >>>>to find a variable like ${clientip}. I see forcereplyto but that's
> >>>>defined by the client.
> >>>>
> >>>>I would like this in order to collect and analyze files before I put
> >>>>them under central cfengine control. I don't really need information
> >>>>sandboxes for that kind of temporary information, but there is some
> >>>>other system information I would like to protectection for. Stuff
> >>>>defined on the systems that I want persistent across system builds.
> >>>>Any
> >>>>ideas?
> >>>>
> >>>>
> >>>_______________________________________________
> >>>Help-cfengine mailing list
> >>>address@hidden
> >>>http://lists.gnu.org/mailman/listinfo/help-cfengine
> >>>
> >
> >
> -- 
> Tod Oace, Intel Corporation <address@hidden>
> 
> 
> 
> _______________________________________________
> Help-cfengine mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/help-cfengine

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Fax : +47 22453205            WWW  :  http://www.iu.hio.no/~mark
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