How to monitor disk space in Linux boxes
Sometimes, you will need to monitor your disk space on some linux servers in your network. You may install monitoring tools like Zabbix, however this may be too much, may be you just need to monitor disk usage on the box. You can use this script to e-mail you every morning with the disk usage on the box:
#!/bin/sh
address="root@localhost";
cicl="2 3 4 5 6";
# ?????????? ? ????????? ????? ???????????? ????? ??? ??????? ???????,
# ??? ??????? ?????????? ?????????
predel[2]=80; # /
predel[3]=80; # /usr
predel[4]=60; # /var
predel[5]=80; # /tmp
predel[6]=80; # /home
varning=”0″;
count=0;
df -h > /tmp/tmp_df;
while read -r FS S Ud A U MO; do
let count+=1;
FileSystem[$count]=$FS;
Size[$count]=$S;
Used[$count]=$Ud;
Avail[$count]=$A;
Use[$count]=$U;
MountedOn[$count]=$MO;
NUse[$count]=${Use[$count]%”%”};
done < /tmp/tmp_df;
table=”";
for c in $cicl; do
if [[ ${NUse[$c]} -ge ${predel[c]} ]]; then
varning=”1″;
table=$table”n${FileSystem[$c]} t${Size[$c]} t${Used[$c]} t${Avail[$c]} t${Use[$c]} t${MountedOn[$c]}”;
fi
done
shapka=”nFileSystem tSize tUsed tAvail tUse tMounted On”;
body=”Regard admin, please check, place on disk:”$shapka$table;
#echo -e $body;
if [ $varning -eq "1" ];
then
echo -e $body | mail -s”Warning on server” $address;
logger -i -p cron.warn -t dfmonitor “Send warning to $address”;
else
logger -i -p cron.info -t dfmonitor ” Place on disk in rate”;
fi
You can call this shell script whatever you want and don’t forget to add this into your crontabs.
The script is courtesy of OpenNet.Ru
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Welcome to Arstan's personal blog. This blog includes tips on Linux, Apache, MySQL, Shell Scripts. Hardware/software and internet technologies reviews and updates.
I’ve got something similar… It’s not bullet-proof
#!/bin/bash
for X in `df -hl | grep -vi use | awk ‘{print $5}’ | sed -e ’s/\%//g’`; do
if [ $X -gt 50 ]; then
echo `df -hl | grep $X`;
fi;
done