318 lines
10 KiB
Bash
Executable File
318 lines
10 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (C) 2006-2008 Holger Levsen, Micah Anderson
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2 dated June,
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# 1991.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Graph Vserver resource usage and limits
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#
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# Configuration variables
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# vservers - specify the vservers to include in the graph (default: all)
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# resource - specify the resource to be monitored (no default)
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# limits - if true, turn on limit graphing (default: false)
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#
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# NOTE: If no configuration variables are set, the defaults will be used
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# Example /etc/munin/plugin-conf.d/munin-node
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#
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# The following monitors the RSS value for the vservers named
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# "vserver1 vserver2 vserver3 vserver4" and looks to see if the
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# resource limit has been breached, if so it sends a message to nagios
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# via send_nsca, and sends an email to notify that this has happened:
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#
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# [vserver_resources]
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# user root
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# env.vservers vserver1 vserver2 vserver3 vserver4
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# env.resource RSS
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# env.limits 1
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# contacts nagios email
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# contact.nagios.command /usr/bin/send_nsca -H your.nagios-host.here -c /etc/send_nsca.cfg
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# contact.email.command mail -s "Munin-notification for ${var:group} :: ${var:host}" your@email.address.here
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#
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# This second example monitors the VM value for all vservers on the system and
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# has no limit notifications turned on:
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#
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# [vserver_resources]
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# user root
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# env.vservers vserver5 vserver6 vserver7
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# env.resource VM
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# env.limits 0
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#
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# This last example monitors all the resources for vserver5. Note that
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# this will be a busy graph, and it would be really useless if you
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# specified more than one vserver when the resource is set to ALL:
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#
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# [vserver_resources]
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# user root
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# env.vservers vserver5
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# env.resource ALL
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# env.limits 0
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# Possible values for env.resource are:
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#
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# ALL - all the below resources
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# PROC - number of processes
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# VM - sum of all virtual pages inside the guest
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# VML - sum of all virtual pages locked into memory
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# RSS - number of pages currently present in RAM
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# ANON - number of anonymous memory pages
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# FILES - number of open files
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# OFD
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# LOCKS
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# SOCK
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# MSGQ
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# SHM - number of shared memory pages
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# Changelog
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# version 0.1 - 2006 April xx
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# Holger Levsen <debian@layer-acht.org>
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# - initial author
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# version 0.2 - 2006 April 24
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# Micah Anderson <micah@riseup.net>
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# - Add dynamic arch page size determination
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# - Some cleanup and clarification
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# version 0.3 - 2006 May 3
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# Micah Anderson <micah@riseup.net>
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# - Add ability to group vservers via environment vars
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# - Fix missing close quotes and standardize indents
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# - Add limit notification
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# - Update documentation to include info on groups and limits
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# version 0.4 - 2006 Jun 22
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# Micah Anderson <micah@riseup.net>
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# - Fix error that results if NodeName is set to include a domain name
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# version 0.5 - 2006 Oct
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# Micah Anderson <micah@riseup.net>
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# - fixed changelog entries so more changes can happen per version
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# - standardized changelog date and name format
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# - added myself to copyright
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# - standardized indentation
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# - abstracted from just RSS to be usable for any resource specified
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# Holger Levsen <debian@layer-acht.org>
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# - Fix hypens in NodeNames, replace them with underscores
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# - Fix the fix from version 0.4
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# - allow specifying the ressource by linking
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# (ln -s vserver_resources vserver_VM)
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# - provided info about all resources
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# - code cleaned
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# - errors if an invalid resource is specified
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# - handle identical vserver-names by using the vserver-id internally
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# version 0.6 - 2007 Oct
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# Micah Anderson <micah@riseup.net>
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# - removed BASENAME - plugin isn't a wildcard plugin any longer
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# - added $NAMELOC - fixes plugin so it works with VCI_SPACES (> 2.6.19) as well as older version
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#
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# TODO:
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# - make it so you can specify more than one resource to be graphed?
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# or define combined ressource-display: VM+RSS+ANON+SHM and FILES+OFD+LOCK+SOCK
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# (for one vserver only)
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# - and/or make it so you can graph all resources for one vserver
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# - set a default for the resource if it is unset?
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# - use /proc less often (100 times more overhead than talking to the kernel directly)
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# i.e. use something like pagesize=`perl -MPOSIX -e 'print POSIX::sysconf(_SC_PAGESIZE), "\n";'`
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# - ALL resource is broken
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VSERVERS="$vservers"
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LIMITS="$limits"
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RESOURCE="$resource"
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INFO=(`sed 's/.*:\t//' /proc/virtual/info 2>/dev/null || echo '<none>'`)
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KCIN="$[ 16#${INFO[2]} ]";
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# If this is 1, then VCI_SPACES is present in the kernel (new in 2.6.19)
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if [ $[ (KCIN >> 10) & 1 ] -eq 1 ]
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then
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NAMELOC="nsproxy"
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else
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NAMELOC="cvirt"
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fi
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if [ -z "$VSERVERS" ] ; then
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XIDS=`find /proc/virtual/* -type d -exec basename {} \;`
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else
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# it's really more performant to specify vservers by ids or not at all
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XIDS=""
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for i in $VSERVERS ; do
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if [ -d /proc/virtual/$i ] ; then
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XIDS="${XIDS}${i} "
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else
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for j in `find /proc/virtual/* -type d -exec basename {} \;` ; do
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if [ "$i" = "`cat /proc/virtual/$j/$NAMELOC |grep NodeName |cut -f2`" ] ; then
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XIDS="${XIDS}${j} "
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fi
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done
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fi
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done
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fi
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if [ "$1" = "config" ]; then
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case "$RESOURCE" in
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PROC)
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echo 'graph_title Processes used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Processes'
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echo 'graph_info Shows the number of processes used by each vserver.'
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;;
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VM)
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echo 'graph_title Virtual memory used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel VM pages'
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echo 'graph_info Shows virtual memory (human readable) used by each vserver.'
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;;
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VML)
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echo 'graph_title Locked memory used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel VML pages'
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echo 'graph_info Shows locked memory (human readable) used by each vserver.'
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;;
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RSS)
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echo 'graph_title Resident set size used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel RSS pages'
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echo 'graph_info Shows resident set size (human readable) used by each vserver.'
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;;
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ANON)
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echo 'graph_title Anonymous memory used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel ANON pages'
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echo 'graph_info Shows anonymous memory (human readable) used by each vserver.'
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;;
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FILES)
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echo 'graph_title Files used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Files'
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echo 'graph_info Shows files used by each vserver.'
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;;
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OFD)
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echo 'graph_title Open filedescriptors used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Open filedescriptors'
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echo 'graph_info Shows open filedescriptors used by each vserver.'
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;;
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LOCKS)
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echo 'graph_title Locks used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Locks'
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echo 'graph_info Shows locks used by each vserver.'
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;;
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SOCK)
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echo 'graph_title Sockets used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Sockets'
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echo 'graph_info Shows sockets used by each vserver.'
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;;
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MSGQ)
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echo 'graph_title Message queues used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel Message queues'
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echo 'graph_info Shows message queues used by each vserver.'
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;;
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SHM)
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echo 'graph_title Shared memory used by vserver'
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echo 'graph_args --base 1024k -l 0'
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echo 'graph_vlabel SHM pages'
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echo 'graph_info Shows shared memory (human readable) used by each vserver.'
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;;
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*)
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echo "$RESOURCE not defined."
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exit 1
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;;
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esac
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echo 'graph_category vserver'
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# do not assume we are on i386 where pagesize is 4096...
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pagesize=`perl -MPOSIX -e 'print POSIX::sysconf(_SC_PAGESIZE), "\n";'`
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for xid in $XIDS ; do
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LABEL=`cat /proc/virtual/$xid/$NAMELOC |grep NodeName |cut -f2`
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NAME=`echo $LABEL | cut -d. -f1 | tr '-' '_'`
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case "$RESOURCE" in
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PROC)
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echo "$NAME.label $LABEL: processes"
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echo "$NAME.info Number of processes used by $LABEL."
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;;
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VM)
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echo "$NAME.label $LABEL: Virtual memory"
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echo "$NAME.info Size of virtual memory used by $LABEL. (Number multipled by $pagesize to make it human readable)"
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echo "$NAME.cdef $NAME,$pagesize,*"
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;;
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VML)
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echo "$NAME.label $LABEL: Locked memory"
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echo "$NAME.info Size of locked memory used by $LABEL. (Number multipled by $pagesize to make it human readable)"
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echo "$NAME.cdef $NAME,$pagesize,*"
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;;
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RSS)
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echo "$NAME.label $LABEL: Resident set size"
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echo "$NAME.info Size of resident set size used by $LABEL. (Number multiplied by $pagesize to make it human readable)"
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echo "$NAME.cdef $NAME,$pagesize,*"
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;;
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ANON)
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echo "$NAME.label $LABEL: Anonymous memory"
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echo "$NAME.info Size of anonymous memory used by $LABEL. (Number multiplied by $pagesize to make it human readable)"
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echo "$NAME.cdef $NAME,$pagesize,*"
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;;
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FILES)
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echo "$NAME.label $LABEL: Files"
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echo "$NAME.info Number of files used by $LABEL."
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;;
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OFD)
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echo "$NAME.label $LABEL: Open filedescriptors"
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echo "$NAME.info Number of open filedescriptors used by $LABEL."
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;;
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LOCKS)
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echo "$NAME.label $LABEL: Locks"
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echo "$NAME.info Number of locks used by $LABEL."
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;;
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SOCK)
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echo "$NAME.label $LABEL: Sockets"
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echo "$NAME.info Number of sockets used by $LABEL."
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;;
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MSGQ)
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echo "$NAME.label $LABEL: Message queues"
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echo "$NAME.info Number of message queues used by $LABEL."
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;;
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SHM)
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echo "$NAME.label $LABEL: Shared memory"
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echo "$NAME.info Size of shared memory used by $LABEL. (Number multiplied by $pagesize to make it human readable)"
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echo "$NAME.cdef $1,$pagesize,*"
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;;
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*)
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echo "$RESOURCE not defined."
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exit 1
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;;
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esac
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if [ ! -z "$LIMITS" -a "$LIMITS" = 1 ]; then
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LIMIT=`cat /proc/virtual/$xid/limit | grep $RESOURCE | cut -f4`
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if [ ${LIMIT:-0} -gt 0 ]; then
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echo "$NAME.critical $LIMIT"
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fi
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fi
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done
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exit 0
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fi
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for xid in $XIDS ; do
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LABEL=`cat /proc/virtual/$xid/$NAMELOC |grep NodeName |cut -f2`
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NAME=`echo $LABEL | cut -d. -f1 | tr '-' '_'`
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cat /proc/virtual/$xid/limit | awk -v name="${NAME}" -v resource="${RESOURCE}:" \
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'{ if ( $1 == resource )
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printf "%s.value %d\n", name, $2 }'
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done
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