Configuring BIOS Settings With Puppet!

You know what it is like to spend time configuring the BIOS on a a server. You reboot the server, and wait for it to take its sweet time to come back up,¬†frantically¬†push its button, hope that you didn’t miss your chance. Then spend some one-on-one alone time with the interface, making sure you do all the right keystrokes to get the settings you want. Sounds like a bad date.

The Problem

If you are good then you don’t play the waiting game:

[[email protected] ~]$ ipmitool -H 192.168.0.120 -U root -P root  chassis bootparam set bootflag force_bios
Set Boot Device to force_bios
[[email protected] ~]$ ipmitool -H 192.168.0.120 -U root -P root chassis power reset
Chassis Power Control: Reset

But even still, this doesn’t get you around having to manually choose the bios settings you want. Human interaction leads to mistakes, and more importantly, servers are NOT snowflakes: bios-meme

The Solution

Configuration Management = The Solution. I use puppet. Here is how I manage my BIOS settings with Puppet. However, the underlying tools are very vendor specific:

I’m not releasing my module yet due to IP junk, but here is the general overview to get you going for your particular needs:

class bios::setting::turbo($enable=true) {
 case $enable {
   true, '1', 'enable','on', 'true': { $set_value=1 $expect_value='Enabled' }
   false, '0', 'disable', 'off', 'false': { $set_value=0 $expect_value='Disabled' }
 }
 exec { "$bios::syscfg_command /bcs 'Processor Configuration' 'Intel(R) Turbo Boost Technology' $set_value":
   unless => "$bios::syscfg_command /d biossettings 'Intel(R) Turbo Boost Technology' | grep 'Current Value' | grep $expect_value",
   provider => [ shell => 'sh' ]
 }
}

This is just a skeleton example. I have to leave the installation of your vendor-specific tool as an exercise to the reader. For example here would be the same function for a Dell server:

case $enable {
  true, '1', 'enable','on', 'true':      { $set_value='enabled'  }
  false, '0', 'disable', 'off', 'false': { $set_value='disabled' }
}
exec { "$bios::setupbios_command setting set turbo_mode $set_value":
  unless => "$bios::setupbios_command setting get turbo_mode | grep $set_value",
  provider => [ shell => 'sh' ]
}

You are only limited by your Imagination… and whatever BIOS settings your vendor tool exports.

References: