Restarting a Crashed Process


 
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# 8  
Old 05-03-2005
Well the hacker thing isn't that big of a deal. When you are playing the game a player can type a certain command which will cause the server to have a segmentation fault and crash - a buffer overflow I believe. What I was thinking of doing was a ps for each process with the certain conf file. Then put that in a loop and if it doesn't exist then restart the process. However, I don't see how I can output the contents of ps so that i can check this. Like how do you do this: ps -arguments < temp.file
# 9  
Old 05-03-2005
Link that shows one method of creating a lock file. Also shows an example of storing, retrieving, and checking the process based on the PID
# 10  
Old 05-04-2005
Quote:
Originally Posted by Phobos
What I was thinking of doing was a ps for each process with the certain conf file. Then put that in a loop and if it doesn't exist then restart the process. However, I don't see how I can output the contents of ps so that i can check this. Like how do you do this: ps -arguments < temp.file
i'd try counting the number of processes first before i'd check for which process-configuration pair needs to be restarted ... here's my version of events ... put in cron to run every minute or hack what you need off it and put in your script in perpetual loop ...
Code:
#! /bin/ksh
numproc=7
a="sam.cfg h20war.cfg cypher.cfg ryan.cfg cell.cfg alls.cfg p31.cfg"
if [ `ps -ef | grep -wc "cod_lnxded"` -lt "$numproc" ]
then
    ps -ef | awk '/cod_lnxded/ && !/awk/' > /tmp/$$
    if [ -s /tmp/$$ ]
    then
        for cfg in $a
        do
            grep $cfg /tmp/$$ > /dev/null
            if [ $? -ne 0 ]
            then
                  /path/cod_lnxded +exec $cfg &
            fi
        done
    else
        for cfg in $a
        do
            /path/cod_lnxded +exec $cfg &
        done
    fi
    rm /tmp/$$ 2> /dev/null
fi

exit 0


Last edited by Just Ice; 05-04-2005 at 10:00 AM.. Reason: add code to remove the /tmp/$$ file after use
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