[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Quick cfengine poll...
Re: Quick cfengine poll...
Mon, 26 Mar 2001 16:51:32 +0200
I appreciate cfengine as a tool to distribute files to sets of machines.
I presently manage a set of around 80 machines.
There are some concepts I did not understand in your conversation :
a- What do you mean exactly with "e.g. by distributing everything as master
Do you mean there should not exist one set of "master files" ?
Do you mean that the distribution should be done from a central server,
intermediary servers which get there files from the central server ?
---In other term are you speaking of performance, or configuration files
b- I do not understand what you mean by "They're still thinking shell or
perl, and don't understand agent based control systems."
Could you explain ?
Is there a document or book explaining the good way of thinking with
Thanks for all.
address@hidden a écrit :
> On 1 Mar, Andrew Mayhew wrote:
> > Internal to the company that I work for we have been going over a
> > process of evaluation the direction our system management is going to
> > take. Currently we use cfengine, but there seems to be a large push,
> > primarily from our Software Engineering group to develop something
> > from scratch ourselves. Seems to me to be a big wheel reinventing
> > project and will take a lot longer than they anticipate. Their major
> > contention is that cfengine is not a valid enterprise management
> > system and that it was never designed as such. Or in their words:
> > Overall general design of Cfengine followed an evolutionary
> > process that did not initially target large-scale enterprise
> > architectures. Any eventual support for large-scale enterprise
> > functionality was added over time without a fundamental redesign
> > of Cfengine. In order to effectively guarantee use in a
> > distributed enterprise environment, it may very well be necessary
> > to make deep fundamental design and implementation changes to
> > Cfengine to address the technical and business requirements for
> > Provisioning 2.0.
> > They also seem to have problems with cfengine's ability (or in their
> > view lack of ability) to scale to very large scale systems. Could any
> > of you out there give me some numbers in terms of systems which you
> > are managing with cfengine. Something like a cfengine client to cfd
> > server ratio would be greate. Anyone with systems spread over a wide
> > area would also be a plus since in our situation we have host systems
> > in various places around the US and Europe.
> > I really believe that thier arguments are invalid and any support that
> > I can get would be appreciated.
> > Thanks-
> > Andrew Mayhew
> I think they are talking utter bull. The cfengine model is the *only*
> model which scales. That doesn't make cfengine unique, but it makes
> it right. There are folks using it on upto 5000 hosts that I know of.
> That doesn't mean that you can't write a stupid configuration which
> incorporates a serious bottleneck, e.g. by distributing everything
> as master files from a single server...but that's an error in thinking,
> not in cfengine.
> As for large scale enterprise management, I have no idea what they mean,
> since they don't actually specify (sounds like they misunderstood
> something) but if 5000 systems isn't enough, I suspect that they're
> going to be out of luck. Usually when people talk about revinventing,
> it's because they haven't really understood how to think in cfengine.
> They're still thinking shell or perl, and don't understand agent based
> control systems. 500-2000 hosts is quite common, from the messages
> I get.
> I don't know of explicit experience over very wide areas, i.e. different
> domains off hand, but how hard could it be? Over that kind of distance,
> it sunds unlikely that you would want the same configuration everywhere.
> Work: +47 22453272 Email: address@hidden
> Fax : +47 22453205 WWW : http://www.iu.hio.no/~mark
> Help-cfengine mailing list
Re: Quick cfengine poll..., Elmar Kurgpold, 2001/03/26
Re: Quick cfengine poll..., Gregory P. Smith, 2001/03/27