Using Shell to monitor memory usage scripts in Linux

In order to more easily know the memory usage on the server, and according to the memory use size to restart the service, I only the whole fault alarm, if you want to automatically restart the service, we will have to modify their own.

Script content:

It's written, it's not very good-looking, and it's not very good with awk, it's not going to be output in awk, so use a long string of characters to improve

The code is as follows

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[ZZ ~/my_scripts]$ Cat Awk_monitor { ofs= "T" if ($ >= 5.0) if ($ >=3.0) Print $, $ $, $ $, $5,$6,$7,$8,$9, $, $11, $ #这里我觉得可以改进 Fi } [ZZ ~/my_scripts]$ Cat Monitor_processes #!/bin/bash Top-b-N 1 |sed-n ' 8,$ ' p > Top.log Print "Please notice CPU and memory Usage:n" >> Top_re.log Echo >> Top_re.log Print "PID USER PR NI virt RES SHR S%cpu%mem time+ COMMAND" >> t Op_re.log # I think I can improve here too Gawk-f Awk_monitor < Top.log >> Top_re.log Mail-s "System Monitor" zl@shili001 < Top_re.log

Later on the internet to find a good code to share with you.

VI check_mem.sh

The code is as follows

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#!/bin/bash ip= ' Ifconfig | grep ' inet ' | Grep-v ' 127.0.0.1 ' | Awk-f ' {print $} ' | Awk-f ': ' {print $} ' | Head-n 1 ' Max_mem=95 Max_swap=20 memory= ' Free-m|grep Mem|awk ' {print $} ' men= ' Free | awk '/mem/{print int ($3/$2*100)} ' Mem= ' Free-m | awk '/-/{print $} ' swap= ' Free | awk '/swap/{print int ($3/$2*100)} ' If [$Men-gt $MAX _mem-o $SWAP-gt $MAX _swap];then echo "Men warning,memory: $memory, Mem: $Mem" | Mutt-s "$IP Men Warning" rocdk@163.com Fi

Save it and add it to the crontab.

code is as follows	copy code
chmod +x/ root/soft_shell/check_mem.sh */3 * * */bin/sh/root/soft_shell/check_mem.sh