Puppet Class: cassandra::system::transparent_hugepage

Inherits:
cassandra::params
Defined in:
manifests/system/transparent_hugepage.pp

Overview

Disable Transparant Huge Pages as suggested in docs.datastax.com/en/landing_page/doc/landing_page/recommendedSettingsLinux.html.

Parameters:

  • path (string) (defaults to: '/sys/kernel/mm/transparent_hugepage/defrag') —

    The full path to the file for checking/setting if Transparent Hugepages is enabled.

See Also:



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# File 'manifests/system/transparent_hugepage.pp', line 6

class cassandra::system::transparent_hugepage (
  $path = '/sys/kernel/mm/transparent_hugepage/defrag',
) inherits cassandra::params {
  exec { 'Disable Java Hugepages':
    command => "/bin/echo never > ${path}",
    path    => ['/bin', '/usr/bin'],
    unless  => "grep -q '\\[never\\]' ${path}",
  }
}