From 281d6a21de8e8d9ed9a7abd974a6a9ccac13ad77 Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin.cormack@docker.com>
Date: Tue, 26 Apr 2016 16:00:36 +0100
Subject: [PATCH] add oom killer config, so containers die before system
 daemons, fix #110

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
---
 alpine/Dockerfile                  |  2 ++
 alpine/packages/oom/etc/init.d/oom | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100755 alpine/packages/oom/etc/init.d/oom

diff --git a/alpine/Dockerfile b/alpine/Dockerfile
index 43d6b4997..fb99b447a 100644
--- a/alpine/Dockerfile
+++ b/alpine/Dockerfile
@@ -70,6 +70,7 @@ COPY packages/vsudd/vsudd /sbin
 COPY packages/vsudd/etc /etc
 COPY packages/mobyconfig/mobyconfig /usr/bin
 COPY packages/gummiboot/gummiboot.tar.gz /usr/share/src/
+COPY packages/oom/etc /etc
 
 RUN \
   rc-update add swap boot && \
@@ -106,6 +107,7 @@ RUN \
   rc-update add hv_kvp_daemon default && \
   rc-update add hv_vss_daemon default && \
   rc-update add vsudd default && \
+  rc-update add oom default && \
   true
 
 COPY init /
diff --git a/alpine/packages/oom/etc/init.d/oom b/alpine/packages/oom/etc/init.d/oom
new file mode 100755
index 000000000..3a0833ee8
--- /dev/null
+++ b/alpine/packages/oom/etc/init.d/oom
@@ -0,0 +1,21 @@
+#!/sbin/openrc-run
+
+description="oom killer settings"
+
+depend()
+{
+	after docker
+}
+
+start()
+{
+	ebegin "Adjusting oom killer settings"
+
+	for f in $(find /run -name '*.pid')
+	do
+		PID=$(cat $f)
+		[ -f /proc/$PID/oom_score_adj ] && echo "-800" > /proc/$PID/oom_score_adj	
+	done
+
+	eend $? "Failed to adjust oom settings"
+}