hey,
----- "SyRenity" <stas.os...@gmail.com> wrote:
> Hi.
>
> > What kind of tools do you mean? I deploy code with OS packages so
> that makes it easy
> > the package agent actually uses the Puppet provider code to do the
> install/update/etc
> > so it's cross platform.
>
> You mean you package your code as RPM/DEB, and then install it via
> package agent (which uses Puppet code) on-demand, in push model?
yes..
> > you cant access the CLI of a remote machine interactively no, you send a
> > request
> > and get a response based on the logic in your agents.
>
> Can you give any example to this? Suppose I want to find the version
> of Linux installed on every host, for example.
that is available as a Facter fact, here you go:
% mc-facts lsbdistdescription
CentOS release 5.2 (Final) found 1 times
CentOS release 5.3 (Final) found 5 times
CentOS release 5.4 (Final) found 34 times
Finished processing 40 hosts in 5001.69 ms
run it with -v and you get a list of hosts matching, if you wanted to just find
the 5.2 you could:
% mc-find-hosts -W lsbdistdescription=/5.2/
xen6.my.net
If I just want to update 'httpd' package on those machines:
% mc-package -W lsbdistdescription=/5.2/ update httpd
Look at this video: http://www.youtube.com/ripienaar#p/a/u/4/kNvoQCpJ1V4 that's
exim queues and management
exposed over mcollective and centrally managed.
> > I use the package agent to apply operating system updates for
> packages not included
> > in puppet manifests, or for cases where puppet manifest just say
> 'ensure => present'
> > and I manage the updates out of band when i am ready.
>
> So you basically can manage updates as needed, in monitored fashion.
> Nice.
yeah, and audited centrally etc.
> I understand that such things as db schema updates and partial
> productions deploys can be easily done using classes.
> But do you plan to support deployment rollbacks of any sorts?
can't imagine that, at least if some other tool provide a transaction aware
layer sure, but it's an incredibly complex
task and probably varies per environment. Sure you could code rollbacks by
calling your package management tool in a
way that would trigger that. Certainly I do not believe something that just
calls remote procedures could do
rollbacks on your behalf.
--
R.I.Pienaar
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