From 1386bb41ddca5bdac022228b8846f27ff64fd003 Mon Sep 17 00:00:00 2001
From: Daniel Ehlers <danielehlers@mindeye.net>
Date: Mon, 17 Feb 2014 23:23:29 +0100
Subject: [PATCH] gluon-core: force kernel panic on out of memory

In combination with kernel.panic the node will reboot if out of memory.
---
 gluon/gluon-core/files/lib/gluon/functions/sysctl.sh         | 4 ++++
 .../files/lib/gluon/upgrade/core/invariant/012-reboot-on-oom | 5 +++++
 2 files changed, 9 insertions(+)
 create mode 100644 gluon/gluon-core/files/lib/gluon/functions/sysctl.sh
 create mode 100755 gluon/gluon-core/files/lib/gluon/upgrade/core/invariant/012-reboot-on-oom

diff --git a/gluon/gluon-core/files/lib/gluon/functions/sysctl.sh b/gluon/gluon-core/files/lib/gluon/functions/sysctl.sh
new file mode 100644
index 0000000..df1ea21
--- /dev/null
+++ b/gluon/gluon-core/files/lib/gluon/functions/sysctl.sh
@@ -0,0 +1,4 @@
+sysctl_set() {
+  sed -i "/^${1//./\.}=/d" /etc/sysctl.conf 
+  echo "${1}=$2" >> /etc/sysctl.conf
+}
diff --git a/gluon/gluon-core/files/lib/gluon/upgrade/core/invariant/012-reboot-on-oom b/gluon/gluon-core/files/lib/gluon/upgrade/core/invariant/012-reboot-on-oom
new file mode 100755
index 0000000..a457a9c
--- /dev/null
+++ b/gluon/gluon-core/files/lib/gluon/upgrade/core/invariant/012-reboot-on-oom
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+. /lib/gluon/functions/sysctl.sh
+
+sysctl_set vm.panic_on_oom 1