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2021/10/12 02:48 dx 2018/06/28 22:39 внешнее изменениеGo		2021/10/12 02:48 dx 2018/06/28 22:39 внешнее изменениеGo
linux:bash:df_alert [2018/06/28 22:39] – внешнее изменение 127.0.0.1		linux:bash:df_alert [2021/10/12 02:48] (текущий) – dx
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		+	====== Уведомление о свободном месте (df) по крону ======
		+	==== Вариант 1 ====
		+
		+	<code bash>
		+	#!/bin/bash
		+	# www.fduran.com
		+	# script that will send an email to EMAIL when disk use in partition PART is bigger than %MAX
		+	# adapt these 3 parameters to your case
		+	MAX=90
		+	[email protected]
		+	PART=xvda1
		+
		+	USE=`df -h |grep $PART | awk '{ print $5 }' | cut -d'%' -f1`
		+	if [ $USE -gt $MAX ]; then
		+	echo "Percent used: $USE" | mail -s "Running out of disk space" $EMAIL
		+	fi
		+	</code>
		+
		+	https://gist.github.com/fduran/1870429
		+
		+	==== Вариант 2 ====
		+
		+	<code bash>
		+	#!/bin/sh
		+	# set -x
		+	# Shell script to monitor or watch the disk space
		+	# It will send an email to $ADMIN, if the (free available) percentage of space is >= 90%.
		+	# -------------------------------------------------------------------------
		+	# Set admin email so that you can get email.
		+	ADMIN="root"
		+	# set alert level 90% is default
		+	ALERT=90
		+	# Exclude list of unwanted monitoring, if several partions then use "|" to separate the partitions.
		+	# An example: EXCLUDE_LIST="/dev/hdd1|/dev/hdc5"
		+	EXCLUDE_LIST="/auto/ripper"
		+	#
		+	#::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
		+	#
		+	function main_prog() {
		+	while read output;
		+	do
		+	#echo $output
		+	usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1)
		+	partition=$(echo $output | awk '{print $2}')
		+	if [ $usep -ge $ALERT ] ; then
		+	echo "Running out of space \"$partition ($usep%)\" on server $(hostname), $(date)" | \
		+	mail -s "Alert: Almost out of disk space $usep%" $ADMIN
		+	fi
		+	done
		+	}
		+
		+	if [ "$EXCLUDE_LIST" != "" ] ; then
		+	df -H | grep -vE "^Filesystem|tmpfs|cdrom|${EXCLUDE_LIST}" | awk '{print $5 " " $6}' | main_prog
		+	else
		+	df -H | grep -vE "^Filesystem|tmpfs|cdrom" | awk '{print $5 " " $6}' | main_prog
		+	fi
		+	</code>
		+
		+	http://www.cyberciti.biz/tips/shell-script-to-watch-the-disk-space.html
		+
		+	==== Вариант 3 ====
		+
		+	<code bash>
		+	#!/usr/bin/env bash
		+
		+	# vars #
		+	disk="/dev/simfs" # disk to monitor
		+	current_usage=$(df -h | grep ${disk} | awk {'print $5'}) # get disk usage from monitored disk
		+	max_usage="90%" # max 90% disk usage
		+	mail="[email protected]" # mail to sent alert to
		+
		+	# functions #
		+	function max_exceeded() {
		+
		+	# tell that mail is being sent
		+	echo "Max usage (${max_usage}) exceeded. Your disk usage is it at ${current_usage}. Trying to send mail-alert..."
		+
		+	# check if the mail program exist
		+	type mail > /dev/null 2>&1 || {
		+	echo >&2 "Mail does not exist. Install it and run script again. Aborting script..."; exit;
		+	}
		+
		+	# if the mail program exist we continue to this and send the alert
		+	mailbody="Max usage (${max_usage}) exceeded. Your disk (${disk}) usage is at ${current_usage}."
		+	echo ${mailbody} | mail -s "Disk alert!" "${mail}"
		+
		+	echo "Mail was sent to ${mail}"
		+	}
		+
		+	function no_problems() {
		+
		+	echo "No problems. Disk (${disk}) usage at ${current_usage}. Max is set to ${max_usage}."
		+	}
		+
		+	function main() {
		+
		+	# check if a valid disk is chosen
		+	if [ ${current_usage} ]; then
		+	# check if current disk usage is greater than or equal to max usage.
		+	if [ ${current_usage%?} -ge ${max_usage%?} ]; then
		+	# if it is greater than or equal to max usage we call our max_exceeded function and send mail
		+	max_exceeded
		+	else
		+	# if it is ok we do nothing
		+	no_problems
		+	fi
		+	else
		+	# if the disk is not valid, print valid disks on system
		+	echo "Set a valid disk, and run script again. Your disks:"
		+	df -h
		+	fi
		+	}
		+
		+	# init #
		+	main
		+	</code>
		+
		+	http://aarvik.dk/simple-disk-usage-monitor-script-with-bash-and-mail/
		+
		+	==== Вариант 4 ====
		+
		+	<code bash>
		+	#!/bin/bash
		+	for mnt in / /var/log /var/www /mnt/shared; do
		+	chk_avail=`df --output=pcent $mnt | tail -n +2 | tr -cd '0-9\n'`
		+	flg=`echo $(( 100 - $chk_avail ))`
		+	if [ $flg -lt 15 ]; then
		+	echo 'Dataserver lack of free space, only '$flg' percent available in '$mnt' partition' | mail -s 'Dataserver lack of free space' [email protected]
		+	fi
		+	done
		+	</code>
		+
		+	http://ubuntuhowtoo.blogspot.com/2021/09/linux-bash-check-disk-space.html