On 01.09.2010 01:35, Martijn Grendelman wrote:
Mathias Gug schreef:
I am not sure how I said I want to do an update before /every/ package
install. Once at the start of a Puppet-run, /IF/ one or more packages
need to be installed, would suffice.
You may run into a chicken-egg problem. Packages that are configured as
"ensure => latest" can only be upgraded by puppet if the local apt cache
files are up-to-date.
IOW puppet relies on the local apt files to figure out if packages need
to be updated. And to get new local apt files apt-get update needs to be
run.
I am aware of that, but that's not a problem. I could easily run an
update every day outside of Puppet (on Debian, APT installs a cronjob
that can take care of this by default, it just needs to be configured).
That way, Puppet would pick up the new versions sooner or later. But
what I am trying to achieve, has a different background.
Our development team regularly releases new software, packaged in a
Debian package with a unique name. The idea is that we just give Puppet
a new package {foo: } and have these new packages be installed ASAP. We
even use triggered runs to speed things up and to make sure that several
servers remain identical.
But for this to work, the Puppet run needs to run aptitude update to
pick up the new package name. Running the update periodically isn't
enough, but running an update on every catalog run is just overkill.
Hope this explains my motives, and maybe someone has any more tips!
Best regards,
Martijn.
As it was said earlier if you have a ensure => latest you should
probably have (also) a cron job for updates.
For your case you may try a define like (using
http://forge.puppetlabs.com/ripienaar/concat ; read the comments in the
pp files)
define fastupdate_package(
$reason,
$date
)
{
concat::fragment
{"${name}_install":
target => "/var/log/fastupdate_package.log",
order => $date,
content => "${date} Installed package ${name} (${reason})",
}
package
{$name:
#... stuff
require => Exec["aptupdate"],
}
}
when using you should also have included in a class something similar to
concat
{ "/var/log/fastupdate_package.log":
notify => Exec["aptupdate"],
}
exec
{ "aptupdate":
command => "/usr/bin/aptitude update":
refreshonly => true,
}
This should create something like a log file (not an actual log file,
since the new data is not appended, but recreated when necessary). This
would actually create some chaos if used for normal packages, so I
highly recommend using this in a module that only involves your
packages, and for the rest of packages use the cron solution, which is
way way more cleaner than this.
Hope it helps, :)
Silviu
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