If you are running with a master/slave setup functions are executed on the
puppet master as part of the compilation. So it won't really work, and there is
no way to change the ordering.
To execute that on the client you will need to create a custom fact, but it
will always be executed before the puppet run starts. So if you are okay with
it taking two puppet runs to fully configure the node you can use that method
and the fact will be available on the second puppet run after the package has
been installed.
Another way would be to specify which package version you want and install that
version and use the same version variable in the template.
--
Erik Dalén
On Tuesday 23 October 2012 at 12:04, Apple Wang wrote:
> Hi, all
>
> I have some questions about the execution sequence in puppet.
>
> The background:
> I want to install mysql package and configure /etc/my.cnf according to the
> version of mysql. So I wrote an user defined function to get mysql rpm
> version. Codes are as follows.
> ------------------------------------------------
> class mysql {
> package { 'mysql':
> ensure => latest,
> }
>
> $mysql_version = get_pkg_version("mysql")
>
> file { '/etc/my.cnf':
> ensure => present,
> mode => '0644',
> content => template('mysql/mysql.cnf'),
> require => Package['mysql'],
> }
> }
>
> Note: get_pkg_version is the user defined function to get mysql rpm version.
> -------------------------------------------------------------------------------------------
> Issue:
> The first time I execute puppet agent -t, the variable mysql_version couldn't
> get the version of mysql. And I found it was executed before the installation
> of mysql package. And the second time I execute puppet agent -t, the variable
> mysql_version got the version of mysql installed after the first time.
>
> So, my question is that are variables assignment executed before the
> resources such as Package, Service, File..etc?
> Is there any method can make $mysql_version = get_pkg_version("mysql")
> executed after Package['mysql']?
>
> Really looking forward to your answers!
>
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