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--- 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
@@ Строка 1: / Строка 1: @@
+====== 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