aboutsummaryrefslogtreecommitdiff
path: root/libvirt-mem
diff options
context:
space:
mode:
authorGuido G√ľnther <agx@sigxcpu.org>2008-10-23 10:06:12 +0200
committerGuido Guenther <agx@sigxcpu.org>2008-10-23 10:33:14 +0200
commit16f240ed0a2b08fbd640749c217cc2e211ad1101 (patch)
tree6eb8033711b1dc32871cfad793008c69c6dbd8b3 /libvirt-mem
parent0a074398f3a5884d155683c5ee7f8d1972150c8c (diff)
add memory plugin
Diffstat (limited to 'libvirt-mem')
-rw-r--r--libvirt-mem96
1 files changed, 96 insertions, 0 deletions
diff --git a/libvirt-mem b/libvirt-mem
new file mode 100644
index 0000000..fc9a572
--- /dev/null
+++ b/libvirt-mem
@@ -0,0 +1,96 @@
+#!/usr/bin/python
+# vim: set fileencoding=utf-8 :
+#
+# Munin plugin to show the amount of memory used by libvirt managed virtual
+# machines
+#
+# Copyright 2008 Guido Guenther <agx@sigxcpu.org>
+#
+# License: GPLv2
+#
+# 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 Memory Usage
+graph_vlabel Memory Usage / Bytes
+graph_category Virtual Machines
+graph_info This graph shows the current amount of memory used by each virtual machine
+graph_args --base 1024 -l 0"""
+
+ try:
+ conn = libvirt.openReadOnly(uri)
+ except libvirt.libvirtError, err:
+ print >>sys.stderr, "Error opening to %s connection: %s" % (uri, err)
+ return 1
+
+ ids = conn.listDomainsID()
+ type = "AREA"
+ for id in ids:
+ dom = conn.lookupByID(id)
+ name = dom.name()
+ print "%s_mem.label %s" % (canon(name), name)
+ print "%s_mem.type GAUGE" % canon(name)
+ print "%s_mem.min 0" % canon(name)
+ print "%s_mem.draw %s" % (canon(name), type)
+ if type == "AREA":
+ type = "STACK"
+
+ hostname = conn.getHostname()
+ print "host_mem.label %s (host)" % hostname
+ print "host_mem.type GAUGE"
+ print "host_mem.min 0"
+ print "host_mem.draw LINE1"
+ return 0
+
+
+def fetch_values(uri):
+ try:
+ conn = libvirt.openReadOnly(uri)
+ except libvirt.libvirtError, err:
+ print >>sys.stderr, "Error opening to %s connection: %s" % (uri, err)
+ return 1
+ ids = conn.listDomainsID()
+ hostmem = conn.getInfo()[1] * 1024 * 1024
+ print "host_mem.value %d" % hostmem
+ for id in ids:
+ dom = conn.lookupByID(id)
+ name = dom.name()
+ mem = float(dom.info()[2]) * 1024
+ print "%s_mem.value %d" % (canon(name), mem)
+ return 0
+
+
+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':
+ return print_config(uri)
+ return fetch_values(uri)
+
+if __name__ == "__main__":
+ sys.exit(main(sys.argv))
+
+# vim:et:ts=4:sw=4: