Shell Programming and Scripting

Hi again, well does anyone knows how can i grep a process that right know the only part of the process name that i know is "backup" then renice it if the cpu consumption is more then 90% ...

for now i have :

Code:

a=$(ps aux | grep -c backup )

while  $a > 2 #pseudo code
do 
    if [ $cpulevel gt 95 ]; then # grab the cpu consumption for the task ?? lol TOP maybe


    renice ... # this is were i really dont know how im gonna grab the pid maybe awk
                  # and lower the priority of the backup task
    
    fi

done

IMHO It is not a good idea... For you may end with backups never completing...
With time passing all processes loose importance ( automatically the privileges are lowered ) after a well quite some time if your backup is still running, its new privilege will avoid the backup to complete itself... I already saw that on 2 sites so far... ( without anybody noticing... I happened to be called for an issue on a weekend and when tried to restore, I looked at 70 tapes...)

yeh i understand but that is on server that i need to keep track of logs, the backup task ( c0ded by the product team ) is single core so doesnt try to balance itself in the server resources ... that was the only solution i thought

What kind of backup tool are you dealing with? Why is the server so loaded at backup time?

IDS - Large stream of data coming in , at in a certain period of time in the night the task backup starts and i receive a spike cpu load alert that makes me always check for possible DDoS on our servers etc

But what kind of backup? What is your backup tool?
an IDS should not run during backup, meaning to be safe you should have two net interfaces configured one for appl etc... the other for technical purpose (maintenance, backup) and when backup runs disable the open (appl ) network interface ( you use now the private technical...) and so you can put to sleep during backup your IDS

well the tool is integrated on the ids tools is Backup script that in a basic resume logs in zips and send it by ssh to the backup server from the main server ( the one that receives the traffic and analyze it ) .