From f5ead05a9faba85618401b4f09c216addf9e354d Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Tue, 21 Oct 2008 18:12:59 +0200
Subject: add cputime plugin

---
 libvirt-cputime | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 libvirt-cputime

(limited to 'libvirt-cputime')

diff --git a/libvirt-cputime b/libvirt-cputime
new file mode 100644
index 0000000..011a115
--- /dev/null
+++ b/libvirt-cputime
@@ -0,0 +1,76 @@
+#!/usr/bin/python
+# vim: set fileencoding=utf-8 :
+#
+# Munin plugin to show the percent of cputime of libvirt managed virtual
+# machines
+# 
+# Copyright 2008 Guido Guenther <agx@sigxcpu.org>
+#
+# depends: python-libvirt
+#
+# If you don't want to use the default uri use:
+# 
+# [libvirt-*]
+# env.uri qemu:///system
+#
+# in your plugin configuration
+
+import re, sys, os
+import libvirt
+
+def canon(name):
+    return re.sub(r"[^a-zA-Z0-9_]", "_", name)
+
+def print_config(uri):
+    """print the plugin config, determine the domains"""
+
+    print """graph_title Virtual Domain Cpu Time
+graph_vlabel CPU Time percentage
+graph_category Virtual Machines
+graph_info This graph shows the cpu time percentage of each virtual machine
+graph_args --base 1000 -l 0"""
+
+    conn = libvirt.openReadOnly(uri)
+    ids = conn.listDomainsID()
+    for id in ids:
+        dom = conn.lookupByID(id)
+        name = dom.name()
+        print "%s_cputime.label %s" % (canon(name), name)
+        print "%s_cputime.type DERIVE" % canon(name)
+        print "%s_cputime.min 0" % canon(name)
+
+
+def fetch_values(uri):
+    conn = libvirt.openReadOnly(uri)
+    ids = conn.listDomainsID()
+
+    processors = float(conn.getInfo()[2])
+    for id in ids:
+        dom = conn.lookupByID(id)
+        name = dom.name()
+        cputime = float(dom.info()[4])
+        cputime_percentage = 1.0e-7 * cputime / processors
+        print "%s_cputime.value %.0f" % (canon(name), cputime_percentage)
+
+
+def main(sys):
+    uri = os.getenv("uri")
+
+    if len(sys) > 1:
+        if sys[1] in [ 'autoconf', 'detect' ]:
+            if libvirt.openReadOnly(uri):
+                print "yes"
+                return 0
+            else:
+                print "no"
+                return 1
+        elif sys[1] == 'config':
+            print_config(uri)
+            return 0
+    fetch_values(uri)
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv))
+
+# vim:et:ts=4:sw=4:
-- 
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