git-svn-id: svn://svn.code.sf.net/p/muninlite/code/muninlite@1 35caa317-6b62-4e8a-81c0-b04f0c356266
This commit is contained in:
runesk 2007-06-11 15:45:16 +00:00
commit 7c8bd1e394
26 changed files with 1261 additions and 0 deletions

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As MuninLite has close bounds to munin-node code, some of the plugin
code is borrowed from the Linux plugins. As most of the code checkins
are done by previous Munin maintainer, Jimmy Olsen <jimmyo@linpro.no>,
some credits might be missing.
MuninLite hearby credits the following people for their contribution
to Munin or MuninLite
Jimmy Olsen <jimmyo@linpro.no>
- df plugin in Munin
- cpu plugin in Munin
- if_ and if_err_ plugin in Munin
- load plugin in Munin
- memory plugin in Munin
- processes plugin in Munin
- interupts plugin in Munin
Mike Fedyk <mfedyk@mikefedyk.com>
- memory plugin in Munin
- context switch graphing in interupts plugin in Munin
Nicolas Salles <mosan@users.sourceforge.net>
- uptime plugin in Munin
Ragnar Wisløff
- Idea and base for interupts plugin in Munin
Dagfinn Ilmari Mannsåker <ilmari@users.sourceforge.net>
- irqstats plugin in Munin
Kai Ove Gran <kaiove@humla.no>
- Help regarding available features in busybox in floppyfw
- Build script (muninlite.mk) for floppyfw devkit
(http://pong.no/floppyfw/muninlite/)
- post ini script (post-muninlite.ini) for floppyfw
(http://pong.no/floppyfw/muninlite/)

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muninlite
Changelog:
0.9.14 - 0.9.15
Date:
- Some documentations added
0.9.13 - 0.9.14
Date: 2007-06-10
- Plugins as separate files
- Makefile (make smaller munin-node for systems with less plugins)
0.9.12 - 0.9.13
Date: 2007-06-10
- Fixed spikes (hopefully) in if_ and if_err_
- Fixed missing output due to parsed $ in variables in multiple plugins
0 - 0.9.12
Date: 2007-06-08
- First Changelog
- Initial "release"

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
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Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
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mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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#PLUGINS=df cpu if_ if_err_ load memory processes swap netstat uptime interrupts irqstats
PLUGINS=cpu if_ if_err_ load memory processes netstat uptime interrupts irqstats
munin-node:
@VERSION=$$(cat VERSION); \
echo "Making munin-node for muninlite version $$VERSION"; \
PLSTR=""; \
for PLGIN in $(PLUGINS); \
do \
echo "Adding plugin $$PLGIN"; \
PLSTR=$$(echo "$$PLSTR"; grep -v '^#' plugins/$$PLGIN); \
done; \
PLSTR=$$(echo "$$PLSTR" | sed -e 's/\\/\\\\/g' \
-e 's/\//\\\//g' \
-e 's/\$$/\\$$/g'); \
perl -p -e \
"s/\@\@VERSION\@\@/$$VERSION/;s/\@\@PLUGINS\@\@/$(PLUGINS)/;s/\@\@PLSTR\@\@/$$PLSTR/;" \
munin-node.in > munin-node
@chmod +x munin-node
all: munin-node
clean-node:
@echo "Removing munin-node"
@rm -f munin-node
clean-tgz:
@echo "Old releases"
@rm -rf releases
clean: clean-node
clean-all: clean-node clean-tgz
tgz: clean-node
@VERSION=$$(cat VERSION); \
echo "Building release/muninlite-$$VERSION.tar.gz"; \
mkdir -p releases; \
cp -ra . releases/muninlite-$$VERSION 2>/dev/null || true; \
cd releases; \
rm -rf muninlite-$$VERSION/releases; \
tar zcvf muninlite-$$VERSION.tar.gz muninlite-$$VERSION >/dev/null; \
rm -rf muninlite-$$VERSION;

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README for MuninLite
====================
MuninLite is a single Bourne Shell script that implements the Munin
protocoll as well as some Linux specific plugins. The motivation for
developing MuninLite was to provide a simple Munin Node, using inetd
on systems without a full featured Perl and/or bash or a busybox
system.
MuninLite is Copyright (C) 2007 Rune Nordbøe Skillingstad
<rune@skillingstad.no> and released under GPLv2 (see LICENSE file)
Features
--------
MuninLite implements the following plugins:
* df
* cpu
* if_
* if_err_
* load
* memory
* processes
* swap
* netstat
* uptime
* interrupts
* irqstats
Included files
--------------
Changelog Changelog
CREDITS Credits to contributors
LICENSE GPLv2 License
Makefile Rules to make munin-node
README This file
TODO Things to do in future releases
VERSION Current version
munin-node.in The MuninLite script skeleton
examples/xinetd.d/munin Sample xinetd configuration
examples/inetd.conf Sample inetd.conf configuration
examples/inetd.busybox Sample inetd.conf configuration for busybox
examples/hosts.deny Sample hosts.deny configuration
examples/hosts.allow Sample hosts.allow configuration
plugins/cpu CPU usage plugin
plugins/df Filesystem usage plugin
plugins/if_ Network interface traffic plugin
plugins/if_err_ Network interface errors plugin
plugins/interrupts Interrupts & context switches plugin
plugins/irqstats Individual interrupts plugin
plugins/load Load average plugin
plugins/memory Memory usage plugin
plugins/netstat Netstat plugin
plugins/processes Number of Processes plugin
plugins/swap Swap in/out plugin
plugins/uptime Uptime plugin
Build requirements
------------------
Make (Not sure what requirements)
Perl (even very old versions should work)
Requirements
------------
Bourne Shell (ash or dash should be sufficient)
grep (simple grep in busybox is sufficient)
sed (simple sed in busybox is sufficient -- but a bit strange...)
cut (cut in busybox is sufficient)
wc (wc in busybox is sufficient)
xargs (xargs in busybox is sufficient)
inetd (inetd in busybox is sufficient)
Installation
------------
Download source and unpack it.
Edit Makefile to suit your choice of plugins
Make munin-node by running "make"
# make
Making munin-node for muninlite version 0.9.14
Adding plugin df
Adding plugin cpu
Adding plugin if_
Adding plugin if_err_
Adding plugin load
Adding plugin memory
Adding plugin processes
Adding plugin swap
Adding plugin netstat
Adding plugin uptime
Adding plugin interrupts
Adding plugin irqstats
Copy munin-node to a suitable location (/usr/local/bin/) and make it
executable (there will be a "make install" at a later release)
# cp munin-node /usr/local/bin
# chmod +x /usr/local/bin/munin-node
Add munin port to /etc/services
# echo "munin 4949/tcp lrrd # Munin" >>/etc/services
Configure inetd or xinetd to fork this script for request on the
munin port (4949).
Sample configuration for xinetd is located in examples/xinetd.d/munin
# cp examples/xinetd.d/munin /etc/xinetd.d
# killall -HUP xinetd
Sample configuration for inetd is located in examples/inetd.conf
# cat examples/inetd.conf >> /etc/inetd.conf
# killall -HUP inetd
Restrict access to munin port using hosts.allow and
hosts.deny or add a rule to your favorite firewall config.
Examples of hosts.allow/deny settings is provided in the examples
directory.
Iptables might be set with something like this:
# iptables -A INPUT -p tcp --dport munin --source 10.42.42.25 -j ACCEPT
Test
----
To test script, just run it (/usr/bin/local/munin-node):
# /usr/local/bin/munin-node
# munin node at localhost.localdomain
help
# Unknown command. Try list, nodes, config, fetch, version or quit
list
df cpu if_eth0 if_eth1 if_err_eth0 if_err_eth1 load memory
version
munins node on mose.medisin.ntnu.no version: 0.0.5 (munin-lite)
quit
For inetd-test, try to telnet to munin port from allowed host.
# telnet localhost 4949
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
# munin node at localhost.localdomain
help
# Unknown command. Try list, nodes, config, fetch, version or quit
list
df cpu if_eth0 if_eth1 if_err_eth0 if_err_eth1 load memory
version
munins node on mose.medisin.ntnu.no version: 0.0.5 (munin-lite)
quit
Connection closed by foreign host.
Plugin configuration
------------------------
To configure which plugins should be enabled, locate the PLUGINS
variable in munin-node and remove unwanted plugins.
There is no specific configuration for plugins.
Munin configuration
-------------------
Configure your /etc/munin/munin.conf as you would for a regular
munin-node.
[some.host.tld]
address 10.42.42.25
use_node_name yes

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* Homepage
* Documentation

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0.9.15

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These distributions are known to be working with muninlite:
* Floppyfw 3.0
- Needs a busybox with inetd
- See http://pong.no/floppyfw/muninlite/
* Endian Firewall Community 2.1
- Needs some kind of inetd (xinetd RPM from Centos might work)
* OpenSuSE 10.2
- Just works

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munin-node : 10.42.42.25

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munin-node : ALL

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munin stream tcp nowait root /usr/local/bin/munin-node

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munin stream tcp nowait root /usr/sbin/tcpd /usr/local/bin/munin-node

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service munin
{
socket_type = stream
protocol = tcp
wait = no
user = root
group = root
only_from = 10.42.42.25
server = /usr/local/bin/munin-node
disable = no
}

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#!/bin/sh
#
# Simple Bourne Shell script that implements Munin protocoll and
# some common Linux plugins.
#
# For latest version, see http://muninlite.sf.net/
#
# Copyright (c) 2007 Rune Nordbøe Skillingstad <rune@skillingstad.no>
#
# Licensed under GPLv2 (see LICENSE file for full License)
#
# $Id: $
#
VERSION="@@VERSION@@"
# Remove unwanted plugins from this list
PLUGINS="@@PLUGINS@@"
# ===== PLUGINS CODE =====
@@PLSTR@@
# ===== NODE CODE =====
do_list() {
echo $PLUGINS
}
do_nodes() {
echo "$HOSTNAME"
echo "."
}
do_config() {
if echo "$PLUGINS" | grep "\b$1\b" >/dev/null 2>&1; then
config_$1
else
echo "# Unknown service"
fi
echo "."
}
do_fetch() {
if echo "$PLUGINS" | grep "\b$1\b" >/dev/null 2>&1; then
fetch_$1
else
echo "# Unknown service"
fi
echo "."
}
do_version() {
echo "munins node on $HOSTNAME version: $VERSION (munin-lite)"
}
do_quit() {
exit 0
}
# ===== Runtime config =====
RES=""
for PLUG in $PLUGINS
do
if [ "$PLUG" = "if_" ]; then
for INTER in $(grep '^ *\(eth\|wlan\|ath\|ra\)[0-9]\{1,\}:' /proc/net/dev | cut -f1 -d: | sed 's/ //g');
do
RES="$RES if_$INTER"
eval "fetch_if_${INTER}() { fetch_if $INTER $@; };"
eval "config_if_${INTER}() { config_if $INTER $@; };"
done
elif [ "$PLUG" = "if_err_" ]; then
for INTER in $(grep '^ *\(eth\|wlan\|ath\|ra\)[0-9]\{1,\}:' /proc/net/dev | cut -f1 -d: | sed 's/ //g');
do
RES="$RES if_err_$INTER"
eval "fetch_if_err_${INTER}() { fetch_if_err $INTER $@; };"
eval "config_if_err_${INTER}() { config_if_err $INTER $@; };"
done
elif [ "$PLUG" = "netstat" ]; then
if netstat -s >/dev/null 2>&1; then
RES="$RES netstat"
fi
else
RES="$RES $PLUG";
fi
done
PLUGINS=$RES
# ===== MAIN LOOP =====
FUNCTIONS="list nodes config fetch version quit"
HOSTNAME=$(hostname -f 2>/dev/null || hostname)
echo "# munin node at $HOSTNAME"
while read arg0 arg1
do
arg0=$(echo "$arg0" | xargs)
arg1=$(echo "$arg1" | xargs)
if ! echo "$FUNCTIONS" | grep "\b$arg0\b" >/dev/null 2>&1 ; then
echo "# Unknown command. Try" $(echo "$FUNCTIONS" | sed -e 's/\( [[:alpha:]]\{1,\}\)/,\1/g' -e 's/,\( [[:alpha:]]\{1,\}\)$/ or\1/')
continue
fi
do_$arg0 $arg1
done

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config_cpu() {
extinfo=""
if grep '^cpu \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\}' /proc/stat >/dev/null 2>&1; then
extinfo="iowait irq softirq"
fi
NCPU=$(($(grep '^cpu. ' /proc/stat | wc -l) - 1))
PERCENT=$(($NCPU * 100))
graphlimit=$PERCENT
SYSWARNING=$(($PERCENT * 30 / 100))
SYSCRITICAL=$(($PERCENT * 50 / 100))
USRWARNING=$(($PERCENT * 80 / 100))
echo "graph_title CPU usage"
echo "graph_order system user nice idle" $extinfo
echo "graph_args --base 1000 -r --lower-limit 0 --upper-limit $graphlimit"
echo "graph_vlabel %"
echo "graph_scale no"
echo "graph_info This graph shows how CPU time is spent."
echo "graph_category system"
echo "graph_period second"
echo "system.label system"
echo "system.draw AREA"
echo "system.max 5000"
echo "system.min 0"
echo "system.type DERIVE"
echo "system.warning $SYSWARNING"
echo "system.critical $SYSCRITICAL"
echo "system.info CPU time spent by the kernel in system activities"
echo "user.label user"
echo "user.draw STACK"
echo "user.min 0"
echo "user.max 5000"
echo "user.warning $USRWARNING"
echo "user.type DERIVE"
echo "user.info CPU time spent by normal programs and daemons"
echo "nice.label nice"
echo "nice.draw STACK"
echo "nice.min 0"
echo "nice.max 5000"
echo "nice.type DERIVE"
echo "nice.info CPU time spent by nice(1)d programs"
echo "idle.label idle"
echo "idle.draw STACK"
echo "idle.min 0"
echo "idle.max 5000"
echo "idle.type DERIVE"
echo "idle.info Idle CPU time"
if [ ! -z "$extinfo" ]; then
echo "iowait.label iowait"
echo "iowait.draw STACK"
echo "iowait.min 0"
echo "iowait.max 5000"
echo "iowait.type DERIVE"
echo "iowait.info CPU time spent waiting for I/O operations to finish"
echo "irq.label irq"
echo "irq.draw STACK"
echo "irq.min 0"
echo "irq.max 5000"
echo "irq.type DERIVE"
echo "irq.info CPU time spent handling interrupts"
echo "softirq.label softirq"
echo "softirq.draw STACK"
echo "softirq.min 0"
echo "softirq.max 5000"
echo "softirq.type DERIVE"
echo "softirq.info CPU time spent handling "batched" interrupts"
fi
}
fetch_cpu() {
extinfo=""
if grep '^cpu \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\} \{1,\}[0-9]\{1,\}' /proc/stat >/dev/null 2>&1; then
extinfo="iowait irq softirq"
fi
CINFO=$(grep '^cpu ' /proc/stat | cut -c6-)
echo "user.value" $(echo "$CINFO" | cut -d\ -f1)
echo "nice.value" $(echo "$CINFO" | cut -d\ -f2)
echo "system.value" $(echo "$CINFO" | cut -d\ -f3)
echo "idle.value" $(echo "$CINFO" | cut -d\ -f4)
if [ ! -z "$extinfo" ]; then
echo "iowait.value" $(echo "$CINFO" | cut -d\ -f5)
echo "irq.value" $(echo "$CINFO" | cut -d\ -f6)
echo "softirq.value" $(echo "$CINFO" | cut -d\ -f7)
fi
}

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config_df() {
echo "graph_title Filesystem usage (in %)
graph_args --upper-limit 100 -l 0
graph_vlabel %
graph_category disk
graph_info This graph shows disk usage on the machine."
for PART in $(df | grep '\/[a-z0-9]*$' | sed 's/ \{1,\}/ /g;' | cut -d\ -f6)
do
PINFO=$(df $PART | tail -1);
PNAME=$(echo $PINFO | cut -d\ -f1 | sed 's/\//_/g')
echo "$PNAME.label $PART"
echo "$PNAME.info $PNAME -> $PART"
echo "$PNAME.warning 92"
echo "$PNAME.critical 98"
done
}
fetch_df() {
for PART in $(df | grep '\/[a-z0-9]*$' | sed 's/ \{1,\}/ /g;' | cut -d\ -f6)
do
PINFO=$(df $PART | tail -1);
PNAME=$(echo $PINFO | cut -d\ -f1 | sed 's/\//_/g')
echo "$PNAME.value" $(echo $PINFO | cut -f5 -d\ | sed -e 's/\%//g')
done
}

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config_if() {
echo "graph_order down up"
echo "graph_title $1 traffic"
echo "graph_args --base 1000"
echo "graph_vlabel bits in (-) / out (+) per \${graph_period}"
echo "graph_category network"
echo "graph_info This graph shows the traffic of the $INTERFACE network interface. Please note that the traffic is shown in bits per second, not bytes. IMPORTANT: Since the data source for this plugin use 32bit counters, this plugin is really unreliable and unsuitable for most 100Mb (or faster) interfaces, where bursts are expected to exceed 50Mbps. This means that this plugin is usuitable for most production environments. To avoid this problem, use the ip_ plugin instead."
echo "down.label received"
echo "down.type COUNTER"
echo "down.graph no"
echo "down.cdef down,8,*"
echo "up.label bps"
echo "up.type COUNTER"
echo "up.negative down"
echo "up.cdef up,8,*"
}
fetch_if() {
IINFO=$(grep "$1:" /proc/net/dev | cut -d: -f2 | sed -e 's/ / /g')
echo "down.value" $(echo $IINFO | cut -d\ -f1)
echo "up.value" $(echo $IINFO | cut -d\ -f9)
}

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config_if_err() {
echo "graph_order rcvd trans"
echo "graph_title $1 errors"
echo "graph_args --base 1000"
echo "graph_vlabel packets in (-) / out (+) per \${graph_period}"
echo "graph_category network"
echo "graph_info This graph shows the amount of errors on the $1 network interface."
echo "rcvd.label packets"
echo "rcvd.type COUNTER"
echo "rcvd.graph no"
echo "rcvd.warning 1"
echo "trans.label packets"
echo "trans.type COUNTER"
echo "trans.negative rcvd"
echo "trans.warning 1"
}
fetch_if_err() {
IINFO=$(grep "$1:" /proc/net/dev | cut -d: -f2 | sed -e 's/ / /g')
echo "rcvd.value" $(echo $IINFO | cut -d\ -f3)
echo "trans.value" $(echo $IINFO | cut -d\ -f11)
}

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config_interrupts() {
echo "graph_title Interrupts & context switches"
echo "graph_args --base 1000 -l 0"
echo "graph_vlabel interrupts & ctx switches / \${graph_period}"
echo "graph_category system"
echo "graph_info This graph shows the number of interrupts and context switches on the system. These are typically high on a busy system."
echo "intr.info Interrupts are events that alter sequence of instructions executed by a processor. They can come from either hardware (exceptions, NMI, IRQ) or software."
echo "ctx.info A context switch occurs when a multitasking operatings system suspends the currently running process, and starts executing another."
echo "intr.label interrupts"
echo "ctx.label context switches"
echo "intr.type DERIVE"
echo "ctx.type DERIVE"
echo "intr.max 100000"
echo "ctx.max 100000"
echo "intr.min 0"
echo "ctx.min 0"
}
fetch_interrupts() {
IINFO=$(cat /proc/stat)
echo "ctx.value" $(echo "$IINFO" | grep "^ctxt" | cut -d\ -f2)
echo "intr.value" $(echo "$IINFO" | grep "^intr" | cut -d\ -f2)
}

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config_irqstats() {
echo "graph_title Individual interrupts
graph_args --base 1000 -l 0;
graph_vlabel interrupts / \${graph_period}
graph_category system"
CPUS=$(grep 'CPU[0-9]' /proc/interrupts | wc -w)
IINFO=$(sed -e 's/ \{1,\}/ /g' -e 's/^ //' /proc/interrupts | grep '.:')
for ID in $(echo "$IINFO" | cut -d: -f1)
do
IDL=$(echo "$IINFO" | grep "^$ID:")
INFO=$(eval "echo \"$IDL\" | cut -d\ -f$((3+$CPUS))-")
if [ "$INFO" = "" ]; then
echo "i$ID.label $ID"
else
echo "i$ID.label $INFO"
echo "i$ID.info Interrupt $ID, for device(s): $INFO"
fi
echo "i$ID.type DERIVE"
echo "i$ID.min 0"
done
}
fetch_irqstats() {
CPUS=$(grep 'CPU[0-9]' /proc/interrupts | wc -w)
IINFO=$(sed -e 's/ \{1,\}/ /g' -e 's/^ //' /proc/interrupts | grep '.:')
for ID in $(echo "$IINFO" | cut -d: -f1)
do
IDL=$(echo "$IINFO" | grep "^$ID:")
VALS=$(eval "echo \"$IDL\" | cut -d\ -f2-$((1+$CPUS))")
VALUE=0
for VAL in $VALS;
do
VALUE=$(($VALUE + $VAL))
done
echo "i$ID.value $VALUE"
done
}

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config_load() {
echo "graph_title Load average
graph_args --base 1000 -l 0
graph_vlabel load
graph_scale no
graph_category system
load.label load
load.warning 10
load.critical 120
graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run \"immediately\").
load.info Average load for the five minutes."
}
fetch_load() {
echo "load.value" $(cut -f2 -d\ /proc/loadavg)
}

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config_memory() {
MINFO=$(cat /proc/meminfo | sed 's/ \{1,\}/ /g;')
MEMTOTAL=$(echo "$MINFO" | grep "^MemTotal:" | cut -d\ -f2)
PAGETABLES=$(echo "$MINFO" | grep "^PageTables:" | cut -d\ -f2)
SWAPCACHED=$(echo "$MINFO" | grep "^SwapCached:" | cut -d\ -f2)
SWAPTOTAL=$(echo "$MINFO" | grep "^SwapTotal:" | cut -d\ -f2)
VMALLOCUSED=$(echo "$MINFO" | grep "^VmallocUsed:" | cut -d\ -f2)
SLAB=$(echo "$MINFO" | grep "^Slab:" | cut -d\ -f2)
MAPPED=$(echo "$MINFO" | grep "^Mapped:" | cut -d\ -f2)
COMMITTEDAS=$(echo "$MINFO" | grep "^Committed_AS:" | cut -d\ -f2)
ACTIVE=$(echo "$MINFO" | grep "^Active:" | cut -d\ -f2)
INACTIVE=$(echo "$MINFO" | grep "^Inactive:" | cut -d\ -f2)
ACTIVEANON=$(echo "$MINFO" | grep "^ActiveAnon:" | cut -d\ -f2)
ACTIVECACHE=$(echo "$MINFO" | grep "^ActiveCache:" | cut -d\ -f2)
INACTIVE=$(echo "$MINFO" | grep "^Inactive:" | cut -d\ -f2)
INACTDIRTY=$(echo "$MINFO" | grep "^Inact_dirty:" | cut -d\ -f2)
INACTLAUNDY=$(echo "$MINFO" | grep "^Inact_laundry:" | cut -d\ -f2)
INACTCLEAN=$(echo "$MINFO" | grep "^Inact_clean:" | cut -d\ -f2)
GRAPH_ORDER="apps";
test "$PAGETABLES" != "" && GRAPH_ORDER="$GRAPH_ORDER page_tables"
test "$SWAPCACHED" != "" && GRAPH_ORDER="$GRAPH_ORDER swap_cache"
test "$VMALLOCUSED" != "" && GRAPH_ORDER="$GRAPH_ORDER vmalloc_used"
test "$SLAB" != "" && GRAPH_ORDER="$GRAPH_ORDER slab"
GRAPH_ORDER="$GRAPH_ORDER cached buffers free swap"
echo "graph_args --base 1024 -l 0 --vertical-label Bytes --upper-limit $MEMTOTAL"
echo "graph_title Memory usage"
echo "graph_category system"
echo "graph_info This graph shows what the machine uses its memory for."
echo "graph_order $GRAPH_ORDER"
echo "apps.label apps"
echo "apps.draw AREA"
echo "apps.info Memory used by user-space applications."
echo "buffers.label buffers"
echo "buffers.draw STACK"
echo "buffers.info Block device (e.g. harddisk) cache. Also where \"dirty\" blocks are stored until written."
echo "swap.label swap"
echo "swap.draw STACK"
echo "swap.info Swap space used."
echo "cached.label cache"
echo "cached.draw STACK"
echo "cached.info Parked file data (file content) cache."
echo "free.label unused"
echo "free.draw STACK"
echo "free.info Wasted memory. Memory that is not used for anything at all."
if [ "$SLAB" != "" ]; then
echo "slab.label slab_cache"
echo "slab.draw STACK"
echo "slab.info Memory used by the kernel (major users are caches like inode, dentry, etc)."
fi
if [ "$SWAPCACHED" != "" ]; then
echo "swap_cache.label swap_cache"
echo "swap_cache.draw STACK"
echo "swap_cache.info A piece of memory that keeps track of pages that have been fetched from swap but not yet been modified."
fi
if [ "$PAGETABLES" != "" ]; then
echo "page_tables.label page_tables"
echo "page_tables.draw STACK"
echo "page_tables.info Memory used to map between virtual and physical memory addresses.\n"
fi
if [ "$VMALLOCUSED" != "" ]; then
echo "vmalloc_used.label vmalloc_used"
echo "vmalloc_used.draw STACK"
echo "vmalloc_used.info Virtual memory used by the kernel (used when the memory does not have to be physically contigious)."
fi
if [ "$COMMITTEDAS" != "" ]; then
echo "committed.label committed"
echo "committed.draw LINE2"
echo "committed.warn" $(($SWAPTOTAL + $MEMTOTAL))
echo "committed.info The amount of memory that would be used if all the memory that's been allocated were to be used."
fi
if [ "$MAPPED" != "" ]; then
echo "mapped.label mapped"
echo "mapped.draw LINE2"
echo "mapped.info All mmap()ed pages."
fi
if [ "$ACTIVE" != "" ]; then
echo "active.label active"
echo "active.draw LINE2"
echo "active.info Memory recently used. Not reclaimed unless absolutely necessary."
fi
if [ "$ACTIVEANON" != "" ]; then
echo "active_anon.label active_anon"
echo "active_anon.draw LINE1"
fi
if [ "$ACTIVECACHE" != "" ]; then
echo "active_cache.label active_cache"
echo "active_cache.draw LINE1"
fi
if [ "$INACTIVE" != "" ]; then
echo "inactive.label inactive"
echo "inactive.draw LINE2"
echo "inactive.info Memory not currently used."
fi
if [ "$INACTDIRTY" != "" ]; then
echo "inact_dirty.label inactive_dirty"
echo "inact_dirty.draw LINE1"
echo "inact_dirty.info Memory not currently used, but in need of being written to disk."
fi
if [ "$INACTLAUNDRY" != "" ]; then
echo "inact_laundry.label inactive_laundry"
echo "inact_laundry.draw LINE1"
fi
if [ "$INACTCLEAN" != "" ]; then
echo "inact_clean.label inactive_clean"
echo "inact_clean.draw LINE1"
echo "inact_clean.info Memory not currently used."
fi
}
fetch_memory() {
MINFO=$(cat /proc/meminfo | sed 's/ \{1,\}/ /g;')
MEMTOTAL=$(echo "$MINFO" | grep "^MemTotal:" | cut -d\ -f2)
MEMFREE=$(echo "$MINFO" | grep "^MemFree:" | cut -d\ -f2)
BUFFERS=$(echo "$MINFO" | grep "^Buffers:" | cut -d\ -f2)
CACHED=$(echo "$MINFO" | grep "^Cached:" | cut -d\ -f2)
SWAP_TOTAL=$(echo "$MINFO" | grep "^SwapTotal:" | cut -d\ -f2)
SWAP_FREE=$(echo "$MINFO" | grep "^SwapFree:" | cut -d\ -f2)
MEMTOTAL=$(echo "$MINFO" | grep "^MemTotal:" | cut -d\ -f2)
PAGETABLES=$(echo "$MINFO" | grep "^PageTables:" | cut -d\ -f2)
SWAPCACHED=$(echo "$MINFO" | grep "^SwapCached:" | cut -d\ -f2)
VMALLOCUSED=$(echo "$MINFO" | grep "^VmallocUsed:" | cut -d\ -f2)
SLAB=$(echo "$MINFO" | grep "^Slab:" | cut -d\ -f2)
MAPPED=$(echo "$MINFO" | grep "^Mapped:" | cut -d\ -f2)
COMMITTEDAS=$(echo "$MINFO" | grep "^Committed_AS:" | cut -d\ -f2)
ACTIVE=$(echo "$MINFO" | grep "^Active:" | cut -d\ -f2)
INACTIVE=$(echo "$MINFO" | grep "^Inactive:" | cut -d\ -f2)
ACTIVEANON=$(echo "$MINFO" | grep "^ActiveAnon:" | cut -d\ -f2)
ACTIVECACHE=$(echo "$MINFO" | grep "^ActiveCache:" | cut -d\ -f2)
INACTIVE=$(echo "$MINFO" | grep "^Inactive:" | cut -d\ -f2)
INACTDIRTY=$(echo "$MINFO" | grep "^Inact_dirty:" | cut -d\ -f2)
INACTLAUNDY=$(echo "$MINFO" | grep "^Inact_laundry:" | cut -d\ -f2)
INACTCLEAN=$(echo "$MINFO" | grep "^Inact_clean:" | cut -d\ -f2)
APPS=$(($MEMTOTAL - $MEMFREE - $BUFFERS - $CACHED))
SWAP=$(($SWAP_TOTAL - $SWAP_FREE))
echo "buffers.value" $(($BUFFERS * 1024))
echo "swap.value" $(($SWAP * 1024))
echo "cached.value" $(($CACHED * 1024))
echo "free.value" $(($MEMFREE * 1024))
if [ "$SLAB" != "" ]; then
echo "slab.value" $(($SLAB * 1024))
APPS=$(($APPS - $SLAB))
fi
if [ "$SWAPCACHED" != "" ]; then
echo "swap_cache.value" $(($SWAPCACHED * 1024))
APPS=$(($APPS - $SWAPCACHED))
fi
if [ "$PAGETABLES" != "" ]; then
echo "page_tables.value" $(($PAGETABLES * 1024))
APPS=$(($APPS - $PAGETABLES))
fi
if [ "$VMALLOCUSED" != "" ]; then
echo "vmalloc_used.value" $(($VMALLOCUSED * 1024))
APPS=$(($APPS - $VMALLOCUSED))
fi
if [ "$COMMITTEDAS" != "" ]; then
echo "committed.value" $(($COMMITTEDAS * 1024))
fi
if [ "$MAPPED" != "" ]; then
echo "mapped.value" $(($MAPPED * 1024))
fi
if [ "$ACTIVE" != "" ]; then
echo "active.value" $(($ACTIVE * 1024))
fi
if [ "$ACTIVEANON" != "" ]; then
echo "active_anon.value" $(($ACTIVEANON * 1024))
fi
if [ "$ACTIVECACHE" != "" ]; then
echo "active_cache.value" $(($ACTIVECACHE * 1024))
fi
if [ "$INACTIVE" != "" ]; then
echo "inactive.value" $(($INACTIVE * 1024))
fi
if [ "$INACTDIRTY" != "" ]; then
echo "inact_dirty.value" $(($INACTDIRTY * 1024))
fi
if [ "$INACTLAUNDRY" != "" ]; then
echo "inact_laundry.value" $(($INACTLAUNDRY * 1024))
fi
if [ "$INACTCLEAN" != "" ]; then
echo "inact_clean.value" $(($INACTCLEAN * 1024))
fi
echo "apps.value" $(($APPS * 1024))
}

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config_netstat() {
echo "graph_title Netstat"
echo "graph_args -l 0 --base 1000"
echo "graph_vlabel active connections"
echo "graph_category network"
echo "graph_period second"
echo "graph_info This graph shows the TCP activity of all the network interfac
es combined."
echo "active.label active"
echo "active.type DERIVE"
echo "active.max 50000"
echo "active.min 0"
echo "active.info The number of active TCP openings per second."
echo "passive.label passive"
echo "passive.type DERIVE"
echo "passive.max 50000"
echo "passive.min 0"
echo "passive.info The number of passive TCP openings per second."
echo "failed.label failed"
echo "failed.type DERIVE"
echo "failed.max 50000"
echo "failed.min 0"
echo "failed.info The number of failed TCP connection attempts per second."
echo "resets.label resets"
echo "resets.type DERIVE"
echo "resets.max 50000"
echo "resets.min 0"
echo "resets.info The number of TCP connection resets."
echo "established.label established"
echo "established.type GAUGE"
echo "established.max 50000"
echo "established.info The number of currently open connections."
}
fetch_netstat() {
NINFO=$(netstat -s | sed 's/ \{1,\}/ /g')
echo "active.value" $(echo "$NINFO" | grep "active connections" | cut -d\ -f2)
echo "passive.value" $(echo "$NINFO" | grep "passive connection" | cut -d\ -f2)
echo "failed.value" $(echo "$NINFO" | grep "failed connection" | cut -d\ -f2)
echo "resets.value" $(echo "$NINFO" | grep "connection resets" | cut -d\ -f2)
echo "established.value" $(echo "$NINFO" | grep "connections established" | cut -d\ -f2)
}

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config_processes() {
echo "graph_title Number of Processes"
echo "graph_args --base 1000 -l 0 "
echo "graph_vlabel number of processes"
echo "graph_category processes"
echo "graph_info This graph shows the number of processes in the system."
echo "processes.label processes"
echo "processes.draw LINE2"
echo "processes.info The current number of processes."
}
fetch_processes() {
echo "processes.value" $(echo /proc/[0-9]* | wc -w)
}

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config_swap() {
echo "graph_title Swap in/out"
echo "graph_args -l 0 --base 1000"
echo "graph_vlabel pages per \${graph_period} in (-) / out (+)"
echo "graph_category system"
echo "swap_in.label swap"
echo "swap_in.type DERIVE"
echo "swap_in.max 100000"
echo "swap_in.min 0"
echo "swap_in.graph no"
echo "swap_out.label swap"
echo "swap_out.type DERIVE"
echo "swap_out.max 100000"
echo "swap_out.min 0"
echo "swap_out.negative swap_in"
}
fetch_swap() {
if [ -f /proc/vmstat ]; then
SINFO=$(cat /proc/vmstat)
echo "swap_in.value" $(echo "$SINFO" | grep "^pswpin" | cut -d\ -f2)
echo "swap_out.value" $(echo "$SINFO" | grep "^pswpout" | cut -d\ -f2)
else
SINFO=$(grep "^swap" /proc/stat)
echo "swap_in.value" $(echo "$SINFO" | cut -d\ -f2)
echo "swap_out.value" $(echo "$SINFO" | cut -d\ -f3)
fi
}

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config_uptime() {
echo "graph_title Uptime"
echo "graph_args --base 1000 -l 0 "
echo "graph_vlabel uptime in days"
echo "uptime.label uptime"
echo "uptime.draw AREA"
echo "uptime.cdef uptime,86400,/"
}
fetch_uptime() {
echo "uptime.value" $(cut -d\ -f1 /proc/uptime)
}