script for time sync

[needee]

please help me write a script that

checks whether the time synchronization is correct with the NTP Server, if time difference is more then 1 minute an email is sent to sysadmin with details.

Regards

[wje_lf]

People around here are unlikely to want to do your scripting for you. We have lives, after all. ;)

Read the documentation, take a stab at writing the script, show us what you have, and ask specific questions about your script. We'll be glad to help if we can, because we know that a few moments of our time will leverage into your greater knowledge of scripting and of Linux in general.

[neirons]

And do You think is very usefull to answer on 1 Year old post. Even, if You think, author question is so wrong

[needee]

thanks for the guidance.
I tried, and succeed.
now requires forums comments/suggestion if there is any mistake/weakness in the script.
The only problem for this script is that I have to configure the "password less ssh login" for each ntp client(this script will configure to run on each ntp client)


#!/bin/bash

# timezone of the local network
export zone=UZT

export script=ntp_script@xyz.local

# sys admin email address
export sysadmin=abc@xyz.local

# ldate, lmonth, lyear, lhour, lminute, lzone are client's date, month, year etc
export ldate=$(date +%d)
export lmonth=$(date +%m)
export lyear=$(date +%Y)
export lhour=$(date +%k)
export lminute=$(date +%M)
export lzone=$(date +%Z)

# sdate, smonth, syear, shour, sminute, szone are the NTP Server's date, month, year etc
# ntp server ip = 192.168.0.1
export sdate=$(ssh 192.168.0.1 "date +%d")
export smonth=$(ssh 192.168.0.1 "date +%m")
export syear=$(ssh 192.168.0.1 "date +%Y")
export shour=$(ssh 192.168.0.1 "date +%k")
export sminute=$(ssh 192.168.0.1 "date +%M")
export szone=$(ssh 192.168.0.1 "date +%Z")


if [ $ldate -eq $sdate -a $lmonth -eq $smonth -a $lyear -eq $syear -a $lzone = $szone ]; then
echo "date, month, year and timezone are OK"
exit
fi

if [ $lzone != $szone -a $szone = $zone ]; then
cp /etc/localtime /tmp
rm -f /etc/localtime
ln -s /usr/share/zoneinfo/Asia/Tashkent /etc/localtime
/etc/init.d/ntp stop; sleep 3;
ntpdate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1
/etc/init.d/ntp start;
# inform the admin via email
echo "client timezone was not right, issue resolved" |mail -s "NTP issue fixed" -r $script $sysadmin <~
exit

else if [ $szone != $zone ]; then
echo "NTP Server timezone is not correct" |mail -s "NTP Server Timezone wrong" -r $script $sysadmin <~
exit
fi

fi

if [ $ldate -eq $sdate -a $lmonth -eq $smonth -a $lyear -eq $syear ]; then exit
else
/etc/init.d/ntp stop; sleep 3;
ntpate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1
/etc/init.d/ntp start;
echo "client date/time was not right, issue resolved" |mail -s "NTP issue fixed" -r $script $sysadmin <~
fi

[neirons]

Hi,

just about line nr. 55 in Your script. Seems to be typewriting mistake
You have:
ntpate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1

But right is:
ntpdate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1

[needee]

Hi,

just about line nr. 55 in Your script. Seems to be typewriting mistake
You have:
ntpate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1

But right is:
ntpdate 192.168.0.1 && ntpdate 192.168.0.1 && ntpdate 192.168.0.1

thanks for pointing the error