On Mon, April 3, 2006 10:38 am, Brendan Strejcek said:
>
> http://madstop.com/articles/tag/transactions
>
> http://reductivelabs.com/projects/puppet/random/transactions1105
Not sure if your 'offtopic' tags referred to the whole question of 'undo'
capability in other tools (which it was, offtopi
Atom Powers wrote:
> Edward F. Brown <[EMAIL PROTECTED]> wrote:
>
> > Have any other tools addressed 'undo'?
>
> I think I head that puppet is working on this, but frankly I haven't
> even looked at it yet.
http://madstop.com/articles/tag/transactions
http://reductivelabs.com/projects/puppet/r
Mark Burgess wrote:
> Undo is rather ambiguous unless you snapshot the entire system (as Ed
> alluded to), since there can be unseen consequences of changes.
And even then, the problem can't be solved generally because the state
of the network is important as well.
However, I think there is plen
On Sat, April 1, 2006 8:43 pm, Atom Powers said:
> But I think we
> will have to agree to disagree.
Agreed. :)
> My position is simple: the tool should be able to undo what it did
I would point out that the tool didn't 'do' anything, WE did it, whatever
IT is. Hoping a tool can add a safety
Josh Smith wrote:
EFB == Edward F Brown <[EMAIL PROTECTED]>
EFB> Have any other tools addressed 'undo'?
A different class of tools: Revision control systems, like CVS and
Subversion. I don't see an easy way to integrate their techniques into
Cfengine, but the idea of committing each change, and
On Saturday 01 April 2006 20:37, Josh Smith wrote:
> EFB == Edward F Brown <[EMAIL PROTECTED]>
>
> EFB> Have any other tools addressed 'undo'?
>
> A different class of tools: Revision control systems, like CVS and
> Subversion. I don't see an easy way to integrate their techniques into
> Cfengine,
EFB == Edward F Brown <[EMAIL PROTECTED]>
EFB> Have any other tools addressed 'undo'?
A different class of tools: Revision control systems, like CVS and
Subversion. I don't see an easy way to integrate their techniques into
Cfengine, but the idea of committing each change, and being able to roll
My position is simple: the tool should be able to undo what it did; if
you want to preserve user modifications get good backups. Perhaps you
can combine the two to make your undo convergent, but that is a
different problem.
Have any other tools addressed 'undo'?
I think I head that puppet is
On 4/1/06, Edward F. Brown <[EMAIL PROTECTED]> wrote:
> O Fri, Mar 31, 2006 at 03:32:22PM -0800, Atom Powers wrote:
>
> > "undo" means "un-do": reverse what you did.
>
> I think this is simplistic.
And I think you are overly complicating the problem. But I think we
will have to agree to disagree.
O Fri, Mar 31, 2006 at 03:32:22PM -0800, Atom Powers wrote:
>
> I would say that this is beyond the scope of the tool.
It may not have been a very good example.
> "undo" means "un-do": reverse what you did.
I think this is simplistic. To try again with the example of
changing modes on a dire
* Can Cfengine determine if a config file on a server is different than
expected and report a diff? How would one go about getting this sort of
behavior/functionality?
The question is sort of "I've already decided to think in Unix shell".
This is not the way cfengine works. You *could* simply
Digant C Kasundra wrote:
Hello everyone,
We're evaluating different config management systems and procedures to
develop and effective infrastructure at Stanford. I'm going through my
list of requirements to show how various options might be able to do
various things. I have read a little bi
Edward F. Brown wrote:
On Fri, March 31, 2006 12:34 pm, Digant C Kasundra said:
* Undo last set of actions
This sounds like a reasonable thing to expect of a configuration
management tool. But I'm very skeptical that it's realistic, or
desirable. There are so many relationships and interdepe
On 3/31/06, Edward F. Brown <[EMAIL PROTECTED]> wrote:
> On Fri, March 31, 2006 2:48 pm, Atom Powers said:
>
> > It depends a lot on what you are rolling back,
>
> Right, I agree. Some things are simple to implement, perhaps a one-line
> change in your configuration to 'undo' an action. But what
On Fri, March 31, 2006 2:48 pm, Atom Powers said:
> It depends a lot on what you are rolling back,
Right, I agree. Some things are simple to implement, perhaps a one-line
change in your configuration to 'undo' an action. But what if a simple
mode change on a directory had allowed a user to writ
On 3/31/06, Edward F. Brown <[EMAIL PROTECTED]> wrote:
> On Fri, March 31, 2006 12:34 pm, Digant C Kasundra said:
> >
> > * Undo last set of actions
>
> This sounds like a reasonable thing to expect of a configuration
> management tool. But I'm very skeptical that it's realistic, or
> desirable.
Digant C Kasundra wrote:
> Or does any output of the shell command get automatically sent to the
> sys admin specified?
Yes, that is exactly what happens.
Best,
Brendan
--
Senior System Administrator
The University of Chicago
Department of Computer Science
http://www.cs.uchicago.edu/people/bre
Usually all output gets sent to the 'sysadm' address as defined in
cfagent.conf. Either the diffs could be displayed in the email (ala
Brendan) or you could use cfengine alerts, ie:
groups:
etc_hosts_modifed = (
ReturnZero(/usr/bin/diff /etc/hosts /path/to/canonical/hosts) )
a
On Fri, March 31, 2006 12:34 pm, Digant C Kasundra said:
>
> * Undo last set of actions
This sounds like a reasonable thing to expect of a configuration
management tool. But I'm very skeptical that it's realistic, or
desirable. There are so many relationships and interdependencies and
complexiti
So that could easily be expanded to call a script that would detect if
there were any diffs and then send an email, I suppose. Or does any output
of the shell command get automatically sent to the sys admin specified?
--On Friday, March 31, 2006 1:56 PM -0600 Brendan Strejcek
<[EMAIL PROTECTE
Digant C Kasundra wrote:
> I was wondering how you would address the following in Cfengine:
>
> * Undo last set of actions
cfengine does not support a general rollback operation.
> * Can Cfengine determine if a config file on a server is different than
> expected and report a diff? How would
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