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diff --git a/roles/core/init.sls b/roles/core/init.sls
--- a/roles/core/init.sls
+++ b/roles/core/init.sls
@@ -10,6 +10,7 @@
- .hostname
- .login
- .network
+ - .memory
- .motd
- .src
- .ports
diff --git a/roles/core/memory/init.sls b/roles/core/memory/init.sls
new file mode 100644
--- /dev/null
+++ b/roles/core/memory/init.sls
@@ -0,0 +1,47 @@
+# -------------------------------------------------------------
+# 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 %}

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