From 60b1f7f088490d6904ce549956d33e2992963e79 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Tue, 2 Sep 2014 21:29:40 +0100
Subject: [PATCH 1/1] Use rrdcached with munin

---
 cookbooks/munin/recipes/server.rb             | 19 ++++++++++++++++++
 .../munin/templates/default/munin.conf.erb    |  3 +++
 .../munin/templates/default/rrdcached.erb     | 20 +++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 cookbooks/munin/templates/default/rrdcached.erb

diff --git a/cookbooks/munin/recipes/server.rb b/cookbooks/munin/recipes/server.rb
index ed7aeac44..983f92231 100644
--- a/cookbooks/munin/recipes/server.rb
+++ b/cookbooks/munin/recipes/server.rb
@@ -20,6 +20,25 @@
 include_recipe "apache"
 
 package "munin"
+package "rrdcached"
+
+template "/etc/default/rrdcached" do
+  source "rrdcached.erb"
+  owner "root"
+  group "root"
+  mode 0644
+end
+
+directory "/var/lib/munin/rrdcached" do
+  owner "munin"
+  group "munin"
+  mode 0755
+end
+
+service "rrdcached" do
+  action [ :enable, :start ]
+  subscribes :restart, "template[/etc/default/rrdcached]"
+end
 
 expiry_time = 14 * 86400
 
diff --git a/cookbooks/munin/templates/default/munin.conf.erb b/cookbooks/munin/templates/default/munin.conf.erb
index 4926a07f9..dd41cd95a 100644
--- a/cookbooks/munin/templates/default/munin.conf.erb
+++ b/cookbooks/munin/templates/default/munin.conf.erb
@@ -1,5 +1,8 @@
 # DO NOT EDIT - This file is being maintained by Chef
 
+# Use rrdcached
+rrdcached_socket /var/run/rrdcached.sock
+
 # Configure alert targets
 contact.admins.command mail -s "Munin Notification" admins@openstreetmap.org
 contact.null.command cat > /dev/null
diff --git a/cookbooks/munin/templates/default/rrdcached.erb b/cookbooks/munin/templates/default/rrdcached.erb
new file mode 100644
index 000000000..f89b91ae1
--- /dev/null
+++ b/cookbooks/munin/templates/default/rrdcached.erb
@@ -0,0 +1,20 @@
+# DO NOT EDIT - This file is being maintained by Chef
+
+# 0: start rrdcached on boot, 1: do not start rrdcached on boot
+# default: 0
+DISABLE=0
+
+# options to be passed to rrdcached
+# (do not specify -p <pidfile> - this is handled by the init script)
+# default: see /etc/init.d/rrdcached
+OPTS="-s munin -m 660 -l unix:/var/run/rrdcached.sock -w 1800 -z 1800 -j /var/lib/munin/rrdcached -F -b /var/lib/munin -B"
+
+# number of seconds to wait for rrdcached to shut down
+# (writing the data to disk may take some time;
+# tune this according to your setup)
+# default: 30
+MAXWAIT=30
+
+# 0: do not enable core-files, 1: enable core-files ... if rrdcached crashes
+# default: 0
+ENABLE_COREFILES=0
-- 
2.39.5