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@dgulinobw
Last active August 13, 2021 12:05
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Show percentage used of 1) per-process ulimit open files, and 2) system-wide open files limit.
#!/bin/bash
printf "%-20s %10s %10s %14s\n" "Process" "Ulimit" "Used" "% Ulimit Used"
length=62
printf -v line '%*s' "$length"
echo ${line// /-}
# gather proceses to list from all of /var/run/
for f in $(find /var/run/ -type f -name "*.pid" | sort)
# gather processes to list from monit
#for f in $(grep pidfile /etc/monit.d/* | awk '{print $6}' | sort)
do
name=$(echo $f | awk -F'/' '{print $NF}' | awk -F"." '{print $1}')
n=$(cat $f)
if [[ $n && ${n-x} ]]
then
if [ -d "/proc/$n" ]
then
current=$(ls /proc/$n/fd/ |wc -l)
limit=$(cat /proc/$n/limits | grep "Max open files" | awk '{print $5}')
percent=$(echo "scale=4; ( $current / $limit ) * 100.0" | bc)
printf "%-20s %10d %10d %13.2f%%\n" $name $limit $current $percent
else
printf "%-35s %20s\n" $name "ERROR: No Process Found"
fi
else
printf "%-35s %20s\n" $name "ERROR: No PID in file"
fi
done
echo
fs_nr=$(sysctl fs.file-nr)
fs_used=$(echo $fs_nr | awk '{print $3}')
fs_limit=$(echo $fs_nr | awk '{print $5}')
fs_percent_used=$(echo "scale=4; ($fs_used / $fs_limit) * 100.0" | bc)
printf "%-10s %10s %16s\n" "FS Limit" "FS Used" "% Limit Used"
length=62
printf -v line '%*s' "$length"
echo ${line// /-}
printf "%-10d %10d %15.2f%%\n" $fs_limit $fs_used $fs_percent_used
echo
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