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#!/bin/sh
# ctdb event script for checking local file system utilization
[ -n "$CTDB_BASE" ] || \
export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
. $CTDB_BASE/functions
loadconfig
case "$1" in
monitor)
# check each specified fs to be checked
# config format is <fs_mount>:<fs_threshold>
for fs in $CTDB_CHECK_FS_USE
do
# parse fs_mount and fs_threshold
fs_mount="${fs%:*}"
fs_threshold="${fs#*:}"
# check if given fs_mount is existing directory
if [ ! -d "$fs_mount" ]; then
echo "Directory $fs_mount does not exist"
exit 1
fi
# check if given fs_threshold is number
if ! (echo "$fs_threshold" | egrep -q '^[0-9]+$') ; then
echo "Threshold $fs_threshold is invalid number"
exit 1
fi
# get utilization of given fs from df
fs_usage=$(df -kP $fs_mount | sed -n -e 's@.*[[:space:]]\([[:digit:]]*\)%.*@\1@p')
# check if fs_usage is number
if [ -z "$fs_usage" ] ; then
echo "Unable to get FS utilization for $fs_mount"
exit 1
fi
# check if fs_usage is higher than or equal to fs_threshold
if [ "$fs_usage" -ge "$fs_threshold" ] ; then
echo "ERROR: Utilization of $fs_mount ($fs_usage%) is higher than threshold ($fs_threshold%)"
exit 1
fi
done
;;
*)
ctdb_standard_event_handler "$@"
;;
esac
exit 0
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