administration.pp
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administration.pp
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	# Allows various adminstrative settings for Redis
	# As documented in the FAQ and https://redis.io/topics/admin
	#
	# @example
	# include redis::administration
	#
	# @example
	# class {'redis::administration':
	# disable_thp => false,
	# }
	#
	# @param [Boolean] enable_overcommit_memory Enable the overcommit memory setting (Defaults to true)
	# @param [Boolean] disable_thp Disable Transparent Huge Pages (Defaults to true)
	# @param [String] somaxconn Set somaxconn value (Defaults to '65535')
	#
	# @author - Peter Souter
	#
	class redis::administration(
	$enable_overcommit_memory = true,
	$disable_thp = true,
	$somaxconn = '65535',
	) {

	if $enable_overcommit_memory {
	sysctl { 'vm.overcommit_memory':
	ensure => 'present',
	value => '1',
	}
	}

	if $disable_thp {
	exec { 'Disable Hugepages':
	command => 'echo never > /sys/kernel/mm/transparent_hugepage/enabled',
	path => ['/sbin', '/usr/sbin', '/bin', '/usr/bin'],
	onlyif => 'test -f /sys/kernel/mm/transparent_hugepage/enabled',
	unless => 'cat /sys/kernel/mm/transparent_hugepage/enabled \| grep "\[never\]"',
	}
	}

	if $somaxconn {
	sysctl { 'net.core.somaxconn':
	ensure => 'present',
	value => $somaxconn,
	}
	}

	}