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Full Discussion: Monitoring processes in parallel and process log file after process exits
Top Forums Shell Programming and Scripting Monitoring processes in parallel and process log file after process exits Post 303003294 by shunya on Tuesday 12th of September 2017 12:42:53 AM
Old 09-12-2017
Monitoring processes in parallel and process log file after process exits
I am writing a script to kick off a process to gather logs on multiple nodes in parallel using "&". These processes create individual log files. Which I would like to filter and convert in CSV format after they are complete. I am facing following issues:
1. Monitor all Processes parallelly. whichever process completes first I would like to convert o/p log file of corresponding process to csv format. Sometimes process might take more than 30 mins to complete. Problem with my code is it will go serially converting files and not any process which completes or releases the file first. Please help

I have following code
Code:
#!/bin/sh -x

infile="$1"
PWD=`pwd`
shift
exec 2>&1
for IPADD in `cat $infile|awk '{print $1}' |tr -d '\015'`
do
OPFILE=${IPADD}_syslog.txt
nohup ${PWD}/collect_log.sh $IPADD > ${OPFILE} &
DPID=$!
echo -e "$DPID $OPFILE" >> pid_pfile.txt
done

##### Loop to parse and rename the files after data collection is complete.
check_palive()
{
PALIVE=`ps cax | grep $DPID | grep -o '^[ ]*[0-9]*'`
if [ -z $PALIVE ];then
HNAME=`grep -i hostname |awk '{print $NF}'`
awk '/name/,/exit/'  $OPFILE |head -n -1 |awk '{print $1,$2,$3,$4,$5}'> ${HNAME}.txt
fi
}


PCOUNT=`pgrep collect_log.sh |wc -l`

while [ $PCOUNT -gt 0 ];do

      for DPID in `pgrep collect_log.sh |awk '{print $1}'`
       do

       PALIVE=`ps -p $DPID --no-headers | wc -l`
          if [ $PALIVE == 0 ];then
            wait $DPID
            OPFILE=`grep $DPID pid_pfile.txt|awk '{print $2}'`
            check_palive
           # sed "/$DPID/d" pid_pfile.txt > pid_pfile.txt
        else
          sleep 120
       fi
done

PCOUNT=`pgrep "junk" |wc -l`
done
rm -f pid_pfile.txt

---------- Post updated at 11:42 PM ---------- Previous update was at 11:38 PM ----------

$infile has list of IP addresses of nodes.
 

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LEARN ABOUT OPENSOLARIS

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWgawk	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for gawk is available on http://opensolaris.org.

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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