Monitoring – nixCraft

Linux / Unix Script: Simple Process Checker To Find Out If A Service Is Running or Not

in Monitoring last updated September 5, 2016

A simple shell script to find out whether critical services are running or, not under Linux or Unix operating systems. The script can send notification using email.

Shell Script To Get Data Center Information, IP Owner, City and Country From Domain Name

in Domain, Monitoring, Networking last updated March 12, 2010

A sample shell script to print domain ip address hosting information such as location of server, city, ip address owner, country and network range. This is useful to track spammers or research purpose.

mcelog: Shell Script To Send Email Alert When Hardware Errors Detected

in Monitoring last updated June 3, 2009

Linux 64 bit kernel shell script to collect hardware errors via /var/log/mcelog and send email alert to prevent server crash.

Shell Script To Display The Running Process Running On The System Every 30 Seconds For 3 Times Only

in Academic, Monitoring last updated September 13, 2008

A shell script to monitor all running process for every 30 seconds but only 3 times on a screen.

NAS Backup Server Disk Monitoring Shell Script

in Backup, Diskadmin, Monitoring last updated September 13, 2008

A SHELL script to monitor NAS backup server and send an email when running out of backup disk space.

Shell script to restart MySQL server if it is killed or not working

in Monitoring last updated April 10, 2008

#!/bin/bash
# Shell script to restart MySQL server if it is killed or not working 
# due to ANY causes.
# When script detects mysql is not running (it basically sends ping request 
# to MySQL) it try to start using /etc/init.d/mysql script; and it sends an 
# email to user indicating the status.
# This script must be run from Cron Job so that it can monitor mysql server. 
# For more info visit following url:
# https://www.cyberciti.biz/nixcraft/vivek/blogger/2005/08/linux-mysql-server-monitoring.html 
# --------------------------------------------------------------------------
# Copyright (C) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------

# mysql root/admin username
MUSER="root"
# mysql admin/root password
MPASS="SET-ROOT-PASSWORD"
# mysql server hostname
MHOST="localhost"
#Shell script to start MySQL server i.e. path to MySQL daemon start/stop script.
# Debain uses following script, need to setup this according to your UNIX/Linux/BSD OS. 
MSTART="/etc/init.d/mysql start"
# Email ID to send notification
EMAILID="notification@somewhere-corp.com"
# path to mail program 
MAILCMD="$(which mail)"
# path mysqladmin
MADMIN="$(which mysqladmin)"

#### DO NOT CHANGE anything BELOW ####
MAILMESSAGE="/tmp/mysql.fail.$$"

# see if MySQL server is alive or not
# 2&1 could be better but i would like to keep it simple and easy to
# understand stuff :)
$MADMIN -h $MHOST -u $MUSER -p${MPASS} ping 2>/dev/null 1>/dev/null
if [ $? -ne 0 ]; then
	echo "" >$MAILMESSAGE
	echo "Error: MySQL Server is not running/responding ping request">>$MAILMESSAGE
	echo "Hostname: $(hostname)" >>$MAILMESSAGE
	echo "Date & Time: $(date)" >>$MAILMESSAGE
	# try to start mysql
	$MSTART>/dev/null
	# see if it is started or not
	o=$(ps cax | grep -c ' mysqld$')
	if [ $o -eq 1 ]; then
		sMess="MySQL Server MySQL server successfully restarted"
	else
		sMess="MySQL server FAILED to restart"
	fi
	# Email status too 
	echo "Current Status: $sMess" >>$MAILMESSAGE
	echo "" >>$MAILMESSAGE
	echo "*** This email generated by $(basename $0) shell script ***" >>$MAILMESSAGE
	echo "*** Please don't reply this email, this is just notification email ***" >>$MAILMESSAGE
	# send email
	$MAILCMD -s "MySQL server" $EMAILID < $MAILMESSAGE
else # MySQL is running :) and do nothing
	:
fi
# remove file
rm -f $MAILMESSAGE

#!/bin/bash

# Shell script to restart MySQL server if it is killed or not working

# due to ANY causes.

# When script detects mysql is not running (it basically sends ping request

# to MySQL) it try to start using /etc/init.d/mysql script; and it sends an

# email to user indicating the status.

# This script must be run from Cron Job so that it can monitor mysql server.

# For more info visit following url:

# https://www.cyberciti.biz/nixcraft/vivek/blogger/2005/08/linux-mysql-server-monitoring.html

# --------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

# mysql root/admin username

MUSER="root"

# mysql admin/root password

MPASS="SET-ROOT-PASSWORD"

# mysql server hostname

MHOST="localhost"

#Shell script to start MySQL server i.e. path to MySQL daemon start/stop script.

# Debain uses following script, need to setup this according to your UNIX/Linux/BSD OS.

MSTART="/etc/init.d/mysql start"

# Email ID to send notification

EMAILID="notification@somewhere-corp.com"

# path to mail program

MAILCMD="$(which mail)"

# path mysqladmin

MADMIN="$(which mysqladmin)"

#### DO NOT CHANGE anything BELOW ####

MAILMESSAGE="/tmp/mysql.fail.$$"

# see if MySQL server is alive or not

# 2&1 could be better but i would like to keep it simple and easy to

# understand stuff :)

$MADMIN -h $MHOST -u $MUSER -p${MPASS} ping 2>/dev/null 1>/dev/null

if [ $? -ne 0 ]; then

echo "" >$MAILMESSAGE

echo "Error: MySQL Server is not running/responding ping request">>$MAILMESSAGE

echo "Hostname: $(hostname)" >>$MAILMESSAGE

echo "Date & Time: $(date)" >>$MAILMESSAGE

# try to start mysql

$MSTART>/dev/null

# see if it is started or not

o=$(ps cax | grep -c ' mysqld$')

if [ $o -eq 1 ]; then

sMess="MySQL Server MySQL server successfully restarted"

else

sMess="MySQL server FAILED to restart"

# Email status too

echo "Current Status: $sMess" >>$MAILMESSAGE

echo "" >>$MAILMESSAGE

echo "*** This email generated by $(basename $0) shell script ***" >>$MAILMESSAGE

echo "*** Please don't reply this email, this is just notification email ***" >>$MAILMESSAGE

# send email

$MAILCMD -s "MySQL server" $EMAILID < $MAILMESSAGE

else # MySQL is running :) and do nothing

# remove file

rm -f $MAILMESSAGE

Shell Script To Monitor Services Such As Web / Http, Ssh, Mail Server

in Monitoring last updated July 14, 2009

A Linux / UNIX Shell Script To Monitor Services Such As Web / Http, Ssh, Mail Server and send an email if they are down.

Monitor UNIX / Linux Server Disk Space with Shell Script

in Monitoring last updated April 10, 2008

Shell script to monitor or watch the disk space and send an email alert if the (free avilable) percentage of space is >= 90%

#!/bin/sh
# Shell script to monitor or watch the disk space
# It will send an email to $ADMIN, if the (free avilable) percentage 
# of space is >= 90% 
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# ----------------------------------------------------------------------
# Linux shell script to watch disk space (should work on other UNIX oses )
# SEE URL: http://www.cyberciti.biz/tips/shell-script-to-watch-the-disk-space.html
# set admin email so that you can get email
ADMIN="me@somewher.com"
# set alert level 90% is default
ALERT=90
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | 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 $(hostname) as on $(date)" | 
     mail -s "Alert: Almost out of disk space $usep" $ADMIN
  fi
done

#!/bin/sh

# Shell script to monitor or watch the disk space

# It will send an email to $ADMIN, if the (free avilable) percentage

# of space is >= 90%

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# ----------------------------------------------------------------------

# Linux shell script to watch disk space (should work on other UNIX oses )

# SEE URL: http://www.cyberciti.biz/tips/shell-script-to-watch-the-disk-space.html

# set admin email so that you can get email

ADMIN="me@somewher.com"

# set alert level 90% is default

ALERT=90

df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;

#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 $(hostname) as on $(date)" |

mail -s "Alert: Almost out of disk space $usep" $ADMIN

done

UNIX / Linux Shell Script For Monitoring System network with ping command

in Monitoring last updated August 1, 2009

#!/bin/bash
# Simple SHELL script for Linux and UNIX system monitoring with 
# ping command
# -------------------------------------------------------------------------
# Copyright (c) 2006 nixCraft project <http://www.cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
# Setup email ID below
# See URL for more info:
# https://www.cyberciti.biz/tips/simple-linux-and-unix-system-monitoring-with-ping-command-and-scripts.html
# -------------------------------------------------------------------------

# add ip / hostname separated by white space 
HOSTS="cyberciti.biz theos.in router"

# no ping request
COUNT=1

# email report when 
SUBJECT="Ping failed"
EMAILID="me@mydomain.com"
for myHost in $HOSTS
do
  count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
  if [ $count -eq 0 ]; then
    # 100% failed 
    echo "Host : $myHost is down (ping failed) at $(date)" | mail -s "$SUBJECT" $EMAILID
  fi
done

#!/bin/bash

# Simple SHELL script for Linux and UNIX system monitoring with

# ping command

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

# Setup email ID below

# See URL for more info:

# https://www.cyberciti.biz/tips/simple-linux-and-unix-system-monitoring-with-ping-command-and-scripts.html

# -------------------------------------------------------------------------

# add ip / hostname separated by white space

HOSTS="cyberciti.biz theos.in router"

# no ping request

COUNT=1

# email report when

SUBJECT="Ping failed"

EMAILID="me@mydomain.com"

for myHost in $HOSTS

count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')

if [ $count -eq 0 ]; then

# 100% failed

echo "Host : $myHost is down (ping failed) at $(date)" | mail -s "$SUBJECT" $EMAILID

done