From dc97b558a263a9512e7157be966d45fe142b93dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@open-infrastructure.net>
Date: Tue, 2 May 2017 21:11:44 +0200
Subject: Adding sysctl config for procps to increase inotify limits in order
 to run more than a few containers on a system.

Signed-off-by: Daniel Baumann <daniel.baumann@open-infrastructure.net>
---
 Makefile                             |  8 ++++++++
 share/procps/zz-container-tools.conf | 12 ++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 share/procps/zz-container-tools.conf

diff --git a/Makefile b/Makefile
index 41b6d99..d243433 100644
--- a/Makefile
+++ b/Makefile
@@ -74,6 +74,9 @@ install: build
 	mkdir -p $(DESTDIR)/etc/logrotate.d
 	cp -r share/logrotate/* $(DESTDIR)/etc/logrotate.d
 
+	mkdir -p $(DESTDIR)/etc/sysctl.d
+	cp -r share/procps/* $(DESTDIR)/etc/sysctl.d
+
 	mkdir -p $(DESTDIR)/etc/sudoers.d
 	cp -r share/sudo/* $(DESTDIR)/etc/sudoers.d
 	chmod 0440 $(DESTDIR)/etc/sudoers.d/*
@@ -141,6 +144,11 @@ uninstall:
 		rm -f $(DESTDIR)/etc/sudoers.d/$$(basename $${FILE}); \
 	done
 
+	for FILE in share/procps/*; \
+	do \
+		rm -f $(DESTDIR)/etc/sysctl.d/$$(basename $${FILE}); \
+	done
+
 	for FILE in share/logrotate/*; \
 	do \
 		rm -f $(DESTDIR)/etc/logrotate.d/$$(basename $${FILE}); \
diff --git a/share/procps/zz-container-tools.conf b/share/procps/zz-container-tools.conf
new file mode 100644
index 0000000..2396dfc
--- /dev/null
+++ b/share/procps/zz-container-tools.conf
@@ -0,0 +1,12 @@
+# The default limits are set to small and eventually lead to errors like
+# the following on container start:
+# Failed to allocate directory watch: Too many open files
+
+# /proc/sys/fs/inotify/max_queued_events defaults to 16384
+fs.inotify.max_queued_events=1048576
+
+# /proc/sys/fs/inotify/max_user_instances defaults to 128
+fs.inotify.max_user_instances=1048576
+
+# /proc/sys/fs/inotify/max_user_watches defaults to 8192
+fs.inotify.max_user_watches=1048576
-- 
cgit v1.2.3