Bash script to monitor system service

This bash script runs and checks to see if a service like httpd, or mysql is running and alerts if it is not.

Script Usage httpd mariadb

Where httpd and mariadb are the services you want to monitor/check.

Setup Script

Create file and paste the following contents in.


timeHour=date +%H # date/time just shows the hour
quietHour="02" # If it is this hour, then exit program, useful if services are expected to go down during a particular time for maintenance
if ( echo ${timeHour} | grep ${quietHour}); then
echo "Is during quiet time. Quiting."

function ALERT {
msg="~/ -b" # Sends a message to Microsoft Teams channel. Needs the script in the users home directory.
${msg} "$1"
if (systemctl status ${serviceName} | grep Active | grep inactive); then
ALERT "ERROR: $(hostname) - ${serviceName} - ${0} is inactive"
echo "ERROR: ${serviceName} is inactive!"
echo "Running!"
for i in $@
echo Checking ${i}

Note the script that is called is another script that is called that sends an alert to Microsoft Teams. Is not needed for this script to run, but allows for remote alerting.

Save file and make it executable

chmod +x

Add script to crontab (Optional)

crontab -e

The following runs the script every 5 minutes. Can change the 5 to 1 to run every minute. Change httpd and mariadb to the service you want to monitor.

*/5 * * * * /home/UserName/ httpd mariadb

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