[xymon] iostat monitor

[Vernon Everett]

If everybody who has done similar hacks can send me their magic, then maybe
we can fold it into the code, and create a more universal script.
We will just have to get past the ksh/bash difference of opinion. :-)

Cheers
     V

On Wed, Sep 15, 2010 at 6:19 AM, Isaac W Traxler <traxler at lsu.edu> wrote:

> Hi,
>
> Jason and I have hacked at the iostat and got something that seems to work
> on Linux. We have not cleaned it up near enough or fixed all that we need.
> Along with changing the script, the graph definitions need to also be
> changed. Here is the what we have done with iostat so far:
>
> #!/bin/bash
> OS=$(uname -o)
> PID=$$
>
> if [[ ${OS} == "solaris" ]]
>  then
>    IOSTAT='/usr/bin/iostat -xrn'
>  else
>    IOSTAT='/usr/bin/iostat -x'
>  fi
>
> TEMPFILE=${BBTMP}/diskstat.tmp.${PID}
> SHOW_NFS=no   # Set this to yes on server side clientlocal.cfg to change it
>              # DISKSTAT:SHOW_NFS=yes
> DURATION=270   # The duration of the iostat sample
>              # This can be updated in the same way as above
>
> # Now we redefine some variables, if they are set in clientlocal
> LOGFETCH=${BBTMP}/logfetch.$(uname -n).cfg
> if [ -f ${LOGFETCH} ]
>    then
>       grep "^DISKSTAT:" ${LOGFETCH} | cut -d":" -f2 \
>                                     | while read NEW_DEF
>                                     do
>                                        ${NEW_DEF}
>                                     done
> fi
>
>  ${TEMPFILE}  # Make sure it's empty
>>
> TEMPFILERAW="${TEMPFILE}.raw"
> ${IOSTAT} $DURATION 2  > ${TEMPFILERAW}  # And collect some data to work
> with.
> # We have to collect 2 sets, because the first set is the average since
> boot.
>
> # Define where the second set of data starts
> LINE=$(cat ${TEMPFILERAW} | grep -n "^Device:" | tail -1 | cut -d":" -f1)
> # take the second set, and massage it into usable data
> TEMPFILEDATA="${TEMPFILE}.data"
> if [[ ${OS} == "solaris" ]]
>  then
>    cat ${TEMPFILERAW} | awk "NR>${LINE}" \
>                       | sed "s/,/ /g" \
>                       | awk '{ print $NF" "$0 }' \
>                       | awk '{ $NF="";print }' > ${TEMPFILEDATA}
>  else
>    cat ${TEMPFILERAW} | awk "NR>${LINE}" \
>                       | awk '{ print $0" "$1 }' \
>                       | awk '{ $NF="";print }' > ${TEMPFILEDATA}
>  fi
> rm ${TEMPFILERAW}
> # Now we format the data and send it off to the server
> if [[ ${OS} == "solaris" ]]
>  then
>    COLUMNS="reads writes kreads kwrites wait actv svct pw pb"
>  else
>    COLUMNS="rrqm wrqm r w rsec wsec avgrq-sz avgqu-sz await svctm util"
>  fi
> count=1
> for subtest in ${COLUMNS}
> do
>   ((count=count+1))
>   echo "" >> ${TEMPFILE}
>   cat ${TEMPFILEDATA} | cut -d" " -f1,${count} \
>                       | while read DEVICE VAL
>                        do
>                           echo "${DEVICE}" | grep ":/" > /dev/null
>                           if [ $? -eq 0 -a "${SHOW_NFS}" = "no" ]
>                           then
>                              break
>                           else
>                              DEVICE=$(echo ${DEVICE} | tr : - )
>                           fi
>                           echo "${DEVICE}:${VAL}" >> ${TEMPFILE}
>                        done
>                        echo "" >> ${TEMPFILE}
>                        ${BB} ${BBDISP} "data ${MACHINE}.diskstat-${subtest}
> $(echo; cat ${TEMPFILE} ;echo "" ;echo "ignore this" )"
>                        # Without the last echo "ignore this", it seems to
> not graph the last entry.
>                        # Odd really, but that seems to fix it.
>                        rm ${TEMPFILE}
> done
> rm ${TEMPFILEDATA}
>
>
> --
> Isaac Traxler                             AIX,Linux Admin
> Louisiana State University                traxler at lsu.edu
> High Performance Computing                225-578-1923
> LONI AIX Clusters
> AIX, Linux Support
>
> On Tue, 14 Sep 2010, Daniel Bourque wrote:
>
>  Date: Tue, 14 Sep 2010 16:22:13 -0500
>> From: Daniel Bourque <dbourque at weatherdata.com>
>> Reply-To: xymon at xymon.com
>> To: xymon at xymon.com
>> Subject: [xymon] iostat monitor
>>
>>
>> Sorry I can't reply to the thread for some reason i quit receiving the
>> emails, I checked the archive and noticed the replies to my former thread. (
>> thanks ! )
>>
>> Vernon, since I don't run solaris here, only linux and some tru64, the -r
>> ( csv output ) and -n ( friendly names ) options makes it hard to use your
>> shell script since they either don't exists or don't work the same. Can you
>> perhaps provide a same output of  "iostat -xrn" and along with formated text
>> you pass to hobbit in your check.
>>
>> I can then provide a snippet of code for linux, which would provide the
>> equivalent output. So you could just add a case in the shell script.
>>
>>
>> case `uname` in
>>  Linux)
>>    /usr/bin/iostat -x $DURATION 2 | wonderful stuff > $TEMPFILE.raw
>>     ;;
>>  SunOS)
>>    /usr/bin/iostat -xrn $DURATION 2 > $TEMPFILE.raw
>>    ;;
>> esac
>>
>>
>>
>> --
>> Dan
>>
>>
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>>
>>
>>
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