Munin contributed plugins

#!/bin/bash

#

#healthcheck on munin

#check site speed.

#egrep contents string

# ... and alert.

#

#programed by rti (hiroyuki fujie) super.rti@gmail.com @super_rti

#LICENSE: NYSL (public domain)

#

#config file

#      /etc/munin/plugin-conf.d/munin-node

#

#example minimum config

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#---------------------------------------------------

#

#check two site

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.url_2  http://www.google.com/

#---------------------------------------------------

#

#check three site

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.url_2  http://www.google.com/

#env.url_3  http://www.yahoo.com/

#---------------------------------------------------

#

#set name

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.name_1 homhom

#---------------------------------------------------

#

#check over proxy

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.proxy_1 127.0.0.1:8080

#---------------------------------------------------

#

#set slow speed(second)

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.slowspeed_1 30

#---------------------------------------------------

#

#grep string

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.htmlgrep_1 saysaya

#---------------------------------------------------

#

#check html contents byte size.

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/

#env.htmlsize_1 50000                  #check 50000 bytes over.

#---------------------------------------------------

#

#full option

#/etc/munin/plugin-conf.d/munin-node

#---------------------------------------------------

#[healthcheck_url]

#env.url_1  http://127.0.0.1/          #check url

#env.htmlgrep_1 apache                 #check egrep string

#env.name_1 127.0.0.1                  #set line name. default by url domain

#env.proxy_1 127.0.0.1:8080            #over proxy

#env.slowspeed_1 30                    #slow time on alert

#env.htmlsize_1 50000                  #check 50000 bytes over.

#---------------------------------------------------

#

#

#edakari speed up.

CHECKMAX=`env | grep url_ | wc -l`

let CHECKMAX="$CHECKMAX + 1"

CURL=/usr/bin/curl

if [ "$1" = "autoconf" ]; then

    if [ $CHECKMAX -le 1 ]; then

         echo no

         exit 1

    fi

    echo yes

    exit 0

fi

if [ "$1" = "config" ]; then

    echo 'graph_title site speed (second)'

    echo "graph_args --base 1000 -l 0 --vertical-label second"

    echo 'graph_scale no'

    echo 'graph_vlabel second'

    echo 'graph_category munin'

    echo 'graph_info This graph shows the site speed'

    for(( I = 1; I < $CHECKMAX; ++I ))

    do

         eval url=\$url_${I}

         eval name=\$name_${I}

         eval slowspeed=\$slowspeed_${I}

         if [ "x${url}" = "x" ]; then

              continue

         fi

         if [ "x${name}" = "x" ]; then

             #default name by domain

             name=`echo $url | sed 's#\.#_#g' | sed -e 's/[^/]*\/\/\([^@]*@\)\?\([^:/]*\).*/\2/'`

         fi

         if [ "x${slowspeed}" = "x" ]; then

             slowspeed=10

         fi

         let slowspeed15="slowspeed * 3 / 2" #slowspeed * 1.5

         echo "$name.label $name"

         echo "$name.info $url"

         echo "$name.draw LINE2"

         echo "$name.min -10"

         echo "$name.max ${slowspeed15}"

         echo "$name.critical 0:${slowspeed}"

    done

    exit 0

fi

for(( I = 1; I < $CHECKMAX; ++I ))

do

     eval url=\$url_${I}

     eval grep=\$htmlgrep_${I}

     eval size=\$htmlsize_${I}

     eval name=\$name_${I}

     eval proxy=\$proxy_${I}

     eval slowspeed=\$slowspeed_${I}

     if [ "x${url}" = "x" ]; then

        continue

     fi

     if [ "x${name}" = "x" ]; then

        #default name by domain

        name=`echo $url | sed 's#\.#_#g' | sed -e 's/[^/]*\/\/\([^@]*@\)\?\([^:/]*\).*/\2/'`

     fi

     PROXY_CMD=""

     if [ "x${proxy}" != "x" ]; then

        PROXY_CMD=" --proxy ${proxy} "

     fi

     if [ "x${slowspeed}" = "x" ]; then

        slowspeed=10

     fi

     let timeout="${slowspeed} + 1"

     START=`date +%s`

     HTML_RESULT=`$CURL "${url}" -s --connect-timeout ${timeout} ${PROXY_CMD}`

     CURLEXITCODE=$?

     END=`date +%s`

     if [ $CURLEXITCODE -ne 0 ]; then

         echo "$name.value -10"

         echo "$name.extinfo curl return $CURLEXITCODE"

         continue

     fi

     GREPEXITCODE=0

     if [ "x${grep}" != "x" ]; then

         echo $HTML_RESULT | egrep -i "${grep}" > /dev/null

         GREPEXITCODE=$?

         if [ $GREPEXITCODE -ne 0 ]; then

             echo "$name.value -9"

             echo "$name.extinfo can not found $grep regex strings"

             continue

         fi

     fi

     if [ "x${size}" != "x" ]; then

         if [ ${#HTML_RESULT} -lt ${size} ]; then

             echo "$name.value -8"

             echo "$name.extinfo html size ${#HTML_RESULT} is smaller than ${size}"

             continue

         fi

     fi

     let SPEED="$END - $START"

     echo "$name.value $SPEED"

done