timemon

Time Monitor - Custom script to monitor time drift on servers.

Manual Installation instructions (assumming Ubuntu 16 LTS)

Login as user (ie. ubuntu) to target server
copy files/timemon.sh and files/monitor.properties to /opt/monscript folder
The timemon.sh and monitor.properties should be owned by root:root
The monitor.properties should have 755 file properties (i.e. chmod 755 monitor.properties)
The timemon.sh should have 555 file properties
Create the log directory defined in monitor.properties and owned by ubuntu:ubuntu (ie. chown ubuntu:ubuntu logs)
Allow ubuntu user to read/write to it (ie. chmod 744 /opt/logs/timemon)
install nptdate on ubuntu (sudo apt install ntpdate)
Remove /etc/cron.allow (or configure if needed)
crontab –e and add the following line: * * * * * /opt/monscript/timemon.sh (runs every minute)
Make sure you have one empty newline at the end of the timemon.sh entry (or cron won’t run)