Nmon data collector

nmon.bash

#!/bin/bash
# Nmon data collector
# https://gist.github.com/cakyus/19f3c44c3fe027b06f58162974e9bd30
#
# Notes
#  1. Log directory must exist and user has write permission
#  2. Crontab example: 0 0 * * * /bin/bash /root/bin/nmon.bash
#
# This script did not:
#  1. Process nmon log
#  2. Compress log files
#  3. Purge log files

# Output directory
LOG_DIR=/var/log/nmon

# Interval between snapshot
INTERVAL=60

HOUR=$( date +"%H" )
MINUTE=$( date +"%M" )

# Number of snapshots in output file, until midnight
SNAPSHOTS=$(( (((24-$HOUR)*60-$MINUTE)*60)/$INTERVAL ))

/usr/bin/nmon -f -T -I 0.1 -s $INTERVAL -c $SNAPSHOTS -m $LOG_DIR