From 62d3469cf60a0ca8bdea429a2feb4131e2722619 Mon Sep 17 00:00:00 2001
From: Guido Günther <agx@sigxcpu.org>
Date: Mon, 17 Nov 2008 11:28:56 +0100
Subject: also calculate the maximum memory vms can balloon to

as absolute and percent value.
---
 libvirt-mem | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

(limited to 'libvirt-mem')

diff --git a/libvirt-mem b/libvirt-mem
index 0c2073c..88bc2c2 100644
--- a/libvirt-mem
+++ b/libvirt-mem
@@ -38,19 +38,29 @@ host_mem.label %(hostname)s (host)
 host_mem.type GAUGE
 host_mem.min 0
 host_mem.draw LINE1
+host_mem.info total memory of host '%(hostname)s'
 total.type GAUGE
-total.label total
-total.info memory used by virtual machines on host %(hostname)s
+total.label total memory
+total.info total memory used by virtual machines on host '%(hostname)s'
 total.graph no
 total.min 0
 total_pc.type GAUGE
 total_pc.label used memory percentage
-total_pc.info memory in percent used by virtual machines on host %(hostname)s
+total_pc.info memory in percent used by virtual machines on host '%(hostname)s'
 total_pc.graph no
 total_pc.min 0
 total_pc.max 100
 total_pc.warning 90
-total_pc.critical 95""" % dict(hostname=hostname)
+total_pc.critical 95
+total_max.type GAUGE
+total_max.label total max. mem
+total_max.info maximum memory virtual machines can balloon to on host '%(hostname)s'
+total_max.min 0
+total_max_pc.type GAUGE
+total_max_pc.label total maximum memory percentage
+total_max_pc.graph no
+total_max_pc.info maximum memory in percent virtual machines can balloon to on host '%(hostname)s'
+total_max_pc.min 0""" % dict(hostname=hostname)
 
     ids = conn.listDomainsID()
     draw = "AREA"
@@ -67,6 +77,7 @@ total_pc.critical 95""" % dict(hostname=hostname)
         print "%s_mem.type GAUGE" % canon(name)
         print "%s_mem.min 0" % canon(name)
         print "%s_mem.draw %s" % (canon(name), draw)
+        print "%s_mem.info memory used by virtual machine '%s'" % (canon(name), name)
         if draw == "AREA":
             draw = "STACK"
     return 0
@@ -74,6 +85,7 @@ total_pc.critical 95""" % dict(hostname=hostname)
 
 def fetch_values(uri):
     total = 0
+    total_max = 0
     try:
         conn = libvirt.openReadOnly(uri)
     except libvirt.libvirtError, err:
@@ -91,11 +103,16 @@ def fetch_values(uri):
             continue
         if name == "Domain-0":
             continue
-        mem = dom.info()[2] * 1024
-        print "%s_mem.value %d" % (canon(name), mem)
+        maxmem, mem = dom.info()[1:3]
+        mem *= 1024
+        maxmem *= 1024
         total += mem
+        total_max += maxmem
+        print "%s_mem.value %d" % (canon(name), mem)
     print "total.value %d" % total
     print "total_pc.value %.0f" % (100.0 * total / float(hostmem))
+    print "total_max.value %d" % total_max
+    print "total_max_pc.value %.0f" % (100.0 * total_max / float(hostmem))
     return 0
 
 
-- 
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