Hello all,
I've got a module that I've been working on in an attempt to make things a
little smarter and I figured using a hash would be an elegant solution to
my problem. The short story is that I've got various video cards in our
production environment and I'd like to have a module that determines what
driver will be installed, depending on the make of the card.
I've written some custom facts to help determine the class of the machine,
what the video card id is and additionally, if the nvidia driver is
currently installed. These facts have been working fine for quite some
time and I can check the values by running a facter -p, which results in
something like:
nvidia_installed => false
video_card_id => 17c2
class => workstation
With that said, here's the module that I've written:
class nvidia::driver_install (
$model_hash = {
009d => "$::nvidia::params::quadro_fx_4500_driver",
06dc => "$::nvidia::params::quadro_6000_driver",
06d9 => "$::nvidia::params::quadro_5000_driver",
11ba => "$::nvidia::params::quadro_K5000_driver",
17c2 => "$::nvidia::params::gtx_titanx_driver",
17f0 => "$::nvidia::params::quadro_M6000_driver",
}
) inherits nvidia::params {
if ($::is_virtual == true) and ($::class == 'server') {
notify { 'This is a virtual machine and the nvidia driver doesn\'t get
intalled' :
}
# only run nvidia installer if the machine is a workstation and the
driver is not already installed
} elsif ($::class == 'workstation') and ($::nvidia_installed == 'false') {
if ($::video_card_id == $model_hash[key]) {
notify { "Installing driver for ($model_hash[key])" : }
exec { 'kdm-stop' :
command => '/usr/bin/service kdm stop' ,
unless => '/usr/bin/service kdm status | grep -i "stop" ' ,
before => Exec['nvidia-driver-install'] ,
}
# install nvidia driver
exec { 'nvidia-driver-install' :
command => "/usr/src/($model_hash[value]).run -s -X -N
--force-tls=new --no-x-check --no-cc-version-check" ,
require => File["/usr/src/($model_hash[value]).run"] ,
notify => Exec['reboot_after_nvidia'] ,
}
# reboot after nvidia install
exec { 'reboot_after_nvidia' :
command => "/sbin/reboot" ,
refreshonly => true ,
}
}
}
}
In addition, I've got most of my parameters saved into the
::nvidia::params.pp file of the module, which then points to hiera for its
values:
$quadro_fx_4500_driver = hiera('nvidia::quadro_fx_4500_driver')
$quadro_6000_driver = hiera('nvidia::quadro_6000_driver')
$quadro_5000_driver = hiera('nvidia::quadro_5000_driver')
$quadro_K5000_driver = hiera('nvidia::quadro_K5000_driver')
$quadro_M6000_driver = hiera('nvidia::quadro_M6000_driver')
$gtx_titanx_driver = hiera('nvidia::gtx_titanx_driver')
These values all resolve and if I use them by name (without the hash),
things seem to work.
My first question is, does it appear that my logic is correct? After
reading the puppet docs about data types and hashes in particular, it
appears to me that I've got the correct syntax. With the above module in
place, I can run a puppet job; but nothing ever gets applied to the host
(no errors are ever reported and the jobs completes successfully). This
leads me to believe that I'm using the hash incorrectly and because of
that, values aren't being determined and therefore this particular piece of
the module doesn't get applied. Might you have any thoughts on why this
doesn't appear to work?
Also, as a bonus question, if I wanted to use this code in another module,
is it as simple as "include ::nvidia::driver_install"?
Thank you in advance to everybody for your help and your assistance. Your
help is very much appreciated.
Cheers,
Mike
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