CPAN installer for Puppet can't find relationship target

Question

Based on some code from this blog and in the comments I'm trying to define some simple CPAN install functionality for Puppet, and I'm trying this:

class perl {
  define install-cpan () {
    exec { "cpan_load_${name}":
      command => "perl -I.cpan -MCPAN -e '\$ENV{PERL_MM_USE_DEFAULT}=1; install $name'",
      cwd => "/root",
      path => "/usr/bin:/usr/sbin:/bin:/sbin",
      unless => "perl -M$name -e 1",
    }
  }
  package { 'perl': ensure => installed }

}

perl::install-cpan { "Bundle::CPAN": }

But I get this error:

err: Could not retrieve catalog from remote server: Could not intern
from pson: Could not convert from pson: Could not find relationship
target "Perl::Install-cpan[Bundle::CPAN]"

What does this mean and how do I fix it?

score 2 · Accepted Answer · answered Aug 12 '10 at 21:14

I've actually decided to go with cpanminus over cpan, and am using:

# perl/manifests/init.pp

class perl {

  define installCPAN () {
    exec { "cpanLoad${title}":
      command => "cpanm $name",
      path    => "/usr/bin:/usr/sbin:/bin:/sbin",
      unless  => "perl -I.cpan -M$title -e 1",
      timeout => 600,
      require => Exec["initCPAN"],
    }
  }

  package { "perl": ensure => installed, require => Class["common"] }
  exec { "initCPAN":
    command =>  "wget -O - http://cpanmin.us | perl - --self-upgrade",
    path    => "/usr/bin:/usr/sbin:/bin:/sbin",
    creates  => "/bin/cpanm",
    require => [ Class["common"], Package["perl"] ],
  }
  # E.g.
  installCPAN { "JSON": }
  installCPAN { "JSON::XS": }
}

score 0 · Answer 2 · edited May 23 '17 at 12:41

The major error seems to be the "-" in the name "install-cpan". The following does work though, and the INIT_CPAN command can be found at How do I automate CPAN configuration?.

# perl/manifests/init.pp

class perl {

  define installCPAN () {
    exec { "cpanLoad${title}":
      command => "perl -MCPAN -e 'install(q[$name])'",
      cwd     => "/root",
      path    => "/usr/bin:/usr/sbin:/bin:/sbin",
      unless  => "perl -I.cpan -M$name -e 1",
      timeout => 600,
      environment => [
        "PERL_MM_USE_DEFAULT=1",
        "PERL_MM_NONINTERACTIVE=1",
        "AUTOMATED_TESTING=1",
      ],
    }
  }

  package { "perl": ensure => installed, require => Class["common"] }
  file { "initCPANcmd":
    source => "puppet://puppet/perl/INIT_CPAN",
    path   => "/root/INIT_CPAN",
    owner  => "root",
    mode   => 700,
  }
  exec { "initCPAN":
    command =>  "/root/INIT_CPAN",
    cwd     => "/root",
    path    => "/usr/bin:/usr/sbin:/bin:/sbin",
    creates  => "/root/.cpan/CPAN/MyConfig.pm",
    require => [ File["initCPANcmd"], Package["perl"] ],
  }

  perl::installCPAN { "Bundle::CPAN": require => Exec["initCPAN"] }

}

CPAN installer for Puppet can't find relationship target

2 Answers2