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#!/bin/bash
#
# Copyright (C) 2007 Andrei Morgan
# Copyright (C) 2008 Micah Anderson
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2 dated June,
# 1991.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Graph Vserver load average
#
# Configuration variables
# vservers - specify the vservers to include in the graph (default: all)
#
# NOTE: If no configuration variables are set, the defaults will be used
# Example /etc/munin/plugin-conf.d/munin-node
#
# The following monitors the load average for vservers 1 and 3:
#
# [vserver_loadavg]
# user root
# env.vservers vserver1 vserver3
# Changelog
# version 0.1 - 2007 June 26
# Andrei Morgan <asm-debian@fifthhorseman.net>
# - initial author, based upon vserver_resources by Holger Levsen and
# Micah Anderson, and upon the examples in the munin wiki.
# version 0.2 - 2008 July 7
# Micah Anderson <micah@riseup.net>
# - fix cvirt vs. nsproxy issue with newer kernels by adding $NAMELOC which
# is aware of VCI_SPACES (> 2.6.19) as well as the older version
# If run with the "autoconf"-parameter, give our opinion on whether we
# should be run on this system or not. This is optional, and only used by
# munin-config. In the case of this plugin, we should most probably
# always be included whwn there is a vserver kernel.
if [ "$1" = "autoconf" ]; then
echo yes
exit 0
fi
# if vservers are specified, use them; the default is to use all.
VSERVERS="$vservers"
# FIXME: using arrays is a bashism
INFO=(`sed 's/.*:\t//' /proc/virtual/info 2>/dev/null || echo '<none>'`)
KCIN="$[ 16#${INFO[2]} ]";
# If this is 1, then VCI_SPACES is present in the kernel (new in 2.6.19)
if [ $[ (KCIN >> 10) & 1 ] -eq 1 ]
then
NAMELOC="nsproxy"
else
NAMELOC="cvirt"
fi
if [ -z "$VSERVERS" ] ; then
XIDS=`find /proc/virtual/* -type d -exec basename {} \;`
else
# it's really more performant to specify vservers by ids or not at all
XIDS=""
for i in $VSERVERS ; do
if [ -d /proc/virtual/$i ] ; then
XIDS="${XIDS}${i} "
else
for j in `find /proc/virtual/* -type d -exec basename {} \;` ; do
if [ "$i" = "`cat /proc/virtual/$j/$NAMELOC |grep NodeName |cut -f2`" ] ; then
XIDS="${XIDS}${j} "
fi
done
fi
done
fi
# If run with the "config"-parameter, give out information on how the
# graphs should look.
if [ "$1" = "config" ]; then
# The title of the graph
echo 'graph_title loadavg of vserver'
# Arguments to "rrdtool graph". In this case, tell it that the
# lower limit of the graph is '0', and that 1k=1000 (not 1024)
echo 'graph_args --base 1000 -l 0'
# We want Cur/Min/Avg/Max unscaled (i.e. 0.42 load instead of
# 420 milliload)
echo 'graph_scale no'
# The Y-axis label
echo 'graph_vlabel loadavg'
# graph information for the main table
echo 'graph_info Shows 5-minute load average per vserver.'
# Graph category. Defaults to 'other'
echo 'graph_category vserver'
for xid in $XIDS ; do
# Specify the vservers
LABEL=`cat /proc/virtual/$xid/$NAMELOC |grep NodeName |cut -f2`
NAME=`echo $LABEL | cut -d. -f1 | tr '-' '_'`
echo "$NAME.label $LABEL: load average"
echo "$NAME.info $NAME average load for the past 5 minutes"
done
# Last, if run with the "config"-parameter, quit here (don't
# display any data)
exit 0
fi
for xid in $XIDS ; do
LABEL=`cat /proc/virtual/$xid/$NAMELOC |grep NodeName |cut -f2`
NAME=`echo $LABEL | cut -d. -f1 | tr '-' '_'`
echo -n "$NAME.value ";
cat /proc/virtual/$xid/cvirt | grep loadavg: | cut -d' ' -f2
done
|
