Excellent, this is exactly what I was hoping for. Thanks.
On Friday, March 3, 2017 at 10:30:42 AM UTC-7, Peter Kristolaitis wrote:
>
> A subscribed / notified resource will only trigger once. Puppet's basic
> execution model only allows each resource to run once during a catalog run,
> and you can think of notify/subscribe as a special case of using 'require'
> to determine execution order.
>
>
> On 3/3/2017 12:14 PM, Joshua Schaeffer wrote:
>
> Ahoy all,
>
> TL;DR
> I'm looking for information on how a catalog runs, in particular if you
> notify an exec resource within a manifest multiple times (from different
> resources) will the exec run multiple times if it has refreshonly set to
> true? I've given more details below:
>
> Background information
> Right now I'm creating a series of modules that helps setup a server to
> meet certain specifications after the server OS is installedt. It basically
> comes down to a few general areas:
>
> 1. Create a module and sub-modules that installs basic components,
> packages, networking, configuration, etc that is applicable to all
> servers.
> 2. Create a module and sub-modules that installs company and region
> specifics.
> 3. Create a module and sub-modules that installs specifics to the type
> of server being setup and its purpose.
>
> I'm already done with steps 1 and 2 and working on getting items installed
> and configured that are particular to the application level of the people
> who will use the server (step 3). Unfortunately part of there steps are to
> call a Perl script that sets up the system after the OS has been configured
> and handed over to them. We don't have the time to really break out what
> the Perl script is doing and "puppetize" each step, so we have decided to
> just call the script itself in Puppet. Not the ideal way to run Puppet but
> right now it is what we need to do.
>
> Situation
> I have to pull the latest code from SVN as part of step 3 described above,
> then copy a few of the files from the repo to another location. What I want
> to do is if any files are copied over then notify an exec resource to run
> the Perl script. So if the file that needs to be copied is not in the
> destination directory, or the file that was pulled from SVN is
> newer/changed then it will update the file in the destination directory.
> This will then send a notify to the exec resource which will run the Perl
> script. However, I only want to call the exec resource once. Say that three
> files are going to be copied from the repo to the destination directory. If
> only one of them is actually copied (because the other two are already
> present and current) then the exec resource would only be notified once,
> however if 2 or 3 of the files are actually copied then will the exec
> resource be notified multiple times? If so will it run multiple times?
>
> This is the code I've created for it:
>
> # First checkout the packages.
> vcsrepo { "/tmp/packages":
> ensure => 'latest',
> provider => 'svn',
> source => $svn_path,
> basic_auth_username => $svn_username,
> basic_auth_password => get_password($svn_username,
> lookup({name =>
> "${profile::site}::${environment}::dat::hostautomation::${svn_username}"
> })),
> }
>
>
> # Copy individual files listed in the package map to use when
> running the automation_software script.
> svn_pkgs_map.each |$pkg, $pkg_detail| {
> file { "${pkg_install_path}/${pkg_detail['name']}"
> ensure => 'present',
> source =>
> "file:///tmp/packages/${pkg_detail['name']}",
> owner => 'ashl',
> group => 'autoshel',
> mode => '0644'
> notify => Exec['automation-software'],
> require => Vcsrepo['/tmp/packages'],
> }
> }
>
>
> # Next install the packages.
> exec { 'automation-software':
> command => $cmd,
> user => 'ashl',
> refreshonly => true,
> }
>
>
> The first step just does a checkout on the repo, the second step copies
> files listed in a map that are specified in Hiera. That step requires the
> SVN step and then if the files are copied/updated will notify the exec
> resource which will actually run the script which takes place in the third
> step.
>
> Question
> So my question is if I specify multiple files in my map and Puppet
> actually copies multiple files, will it notify the exec resource multiple
> times? If it does will it run the exec resource multiple times?
>
> Thanks,
> Joshua
>
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