From ec55682f70ad8f3a36a5ef13976cec06ced50fa7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bernhard=20Rosenkr=C3=A4nzer?= <bero@federated.computer>
Date: Sat, 30 Nov 2024 15:36:09 +0100
Subject: [PATCH] [install-federated] Create and activate a swap file in
 low-RAM configs

---
 bin/install-federated | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/bin/install-federated b/bin/install-federated
index ec8281a..3852909 100755
--- a/bin/install-federated
+++ b/bin/install-federated
@@ -99,6 +99,23 @@ fi
 #IFS=$'\n' read -r -d '' -a EXTRA_APPS_LIST < <(awk -F',' '{ for( i=1; i<=NF; i++ ) print $i }' <<<"$EXTRA_APPS")
 #SERVICES=("${CORE_APPS_LIST[@]}" "${EXTRA_APPS_LIST[@]}")
 
+# Create a swap file if we're in a low RAM configuration
+MEM=$(LC_ALL=C free |grep ^Mem: |awk '{ print $2; }')
+if [ "$MEM" -le 2097152 ]; then
+	SWAPSIZE=4096
+elif [ "$MEM" -le 4194304 ]; then
+	SWAPSIZE=2048
+else
+	SWAPSIZE=0
+fi
+if [ "$SWAPSIZE" -gt 0 ]; then
+	dd if=/dev/zero of=/swap-0001 bs=1M count=$SWAPSIZE
+	chmod 0600 /swap-0001
+	mkswap -v1 /swap-0001
+	echo '/swap-0001 none swap defaults,prio=90 0 2' >>/etc/fstab
+	swapon -a
+fi
+
 # Configure and start each federated core app
 for i in "${CORE_APPS[@]}"; do
   . /federated/lib/$i.sh