init.sls
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init.sls
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	# -------------------------------------------------------------
	# Salt — Memory configuration
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	# Project: Nasqueron
	# Created: 2020-02-12
	# License: Trivial work, not eligible to copyright
	# -------------------------------------------------------------

	# -------------------------------------------------------------
	# Provide SWAP
	#
	# Some servers can't be set up without any swap, especially
	# on Scaleway infrastructure. As a fallback, we can create
	# a swap file in such cases.
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	{% set swap_size = 8 * 1024 %}

	{% if grains['swap_total'] == 0 %}

	create_swap_file:
	cmd.run:
	# dd is here used, as fallocate compatibility with XFS and ext4
	# hasn't been verified.
	- name: dd if=/dev/zero of=/swapfile bs=1MiB count={{ swap_size }}
	- creates: /swapfile

	secure_swap_file:
	file.managed:
	- name: /swapfile
	- mode: 600
	- replace: False

	enable_swap_file:
	cmd.run:
	- name: \|
	mkswap /swapfile
	swapon /swapfile
	touch /etc/.swap-enabled
	- creates: /etc/.swap-enabled

	configure_fstab_for_swap_file:
	file.append:
	- name: /etc/fstab
	- text: /swapfile none swap sw 0 0

	{% endif %}