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blp-grub (3) Versions 1.1.0

Configures grub

Berkshelf
Policyfile
Knife
cookbook 'blp-grub', '~> 1.1.0'
cookbook 'blp-grub', '~> 1.1.0', :supermarket
knife supermarket install blp-grub
knife supermarket download blp-grub
README
Dependencies
Changelog
Quality 75%

blp-grub cookbook

Build Status Cookbook Version License

Cookbook which configures the Grub Bootloader.

Platforms

The following platforms are tested automatically using Test Kitchen, in Docker, with the default suite of integration tests:

  • Ubuntu 12.04/14.04/16.04
  • CentOS (RHEL) 6/7

Basic Usage

The [default recipe](recipes/default.rb) gives you the ability to pass attributes to tune your grub settings. There are currently no defaults in this cookbook so your regular distrobution provided grub file will remain intact. You can tweak the settings in the Policefile.rb or directly using attributes. All GRUB specific settings should use underscores like the examples below.

Hash merging

Values provided as hashes (under ['grub']['config']['settings'][key]) will be merged/flattened to form strings. This is intended to allow overrides to, for example, kernel boot options without ugly string manipulation.

This approach is probably best demonstrated using an example:

default['grub']['config']['settings']['cmdline_linux']['biosdevname'] = '0'
default['grub']['config']['settings']['cmdline_linux']['nomodeset'] = nil
default['grub']['config']['settings']['cmdline_linux']['console'] = [ 'tty0', 'ttyS1,115200n8']

is the precise equivalent of ruby default['grub']['config']['settings']['cmdline_linux'] = 'biosdevname=0 nomodeset console=tty0 console=ttyS1,115200n8'

Using hashes permits simple overrides like the following ruby node.override[grub']['config']['settings']['cmdline_linux']['biosdevname'] = '1'

How hash values are merged

for each key = value pair in the hash:

  • if value is nil, it is omitted and the key is inserted without a value ...[cmdline_linux']['nomodeset'] = nil results in nomodeset

  • if value is an array, the result is key=v1 key=v2... for each value in the array ...['cmdline_linux']['console'] = [ 'x', 'y''] results in console=x console=y

  • otherwise we simply insert key=value ...['cmdline_linux']['biosdevname'] = '0' results in biosdevname=0

To permit overrides to (for example) commandline options it is possible to specify

Recipe

node.default['grub']['config']['settings']['timeout'] = 30
node.default['grub']['config']['settings']['distributor'] = "$(sed 's, release .*$,,g' /etc/system-release)"
node.default['grub']['config']['settings']['terminal_output'] = "console"

Policyfile

name 'grub'
default_source :community
run_list 'blp-grub::default'

override['grub']['config']['settings']['timeout'] = 30
override['grub']['config']['settings']['distributor'] = "$(sed 's, release .*$,,g' /etc/system-release)"
override['grub']['config']['settings']['terminal_output'] = "console"

Dependent cookbooks

This cookbook has no specified dependencies.

Contingent cookbooks

There are no cookbooks that are contingent upon this one.

Change Log

All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning.

[1.1.0]

  • Add support for hashes in grub settings

[1.0.1]

  • fix quoting for strings with spaces vs non spaced values

1.0.0

  • Rename and move cookbook under bloomberg-cookbooks organization.
  • Update cookbook to use Chef 12 resource DSL.
  • Updates integration tests to use InSpec and Policyfiles.

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