What is Monit? Let’s refresh our knowledge a little bit.
From Monit’s website:
Monit is a small Open Source utility for managing and monitoring Unix systems. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.
Monit: https://mmonit.com/monit/documentation/monit.html
Adding email alerts
You can find additional posts about Monit on my website, and today we’re going to add email based alerts.
Let’s say we have Redis configuration for Monit:
check process redis-server with pidfile "/var/run/redis/redis-server.pid"
start program = "/etc/init.d/redis-server start"
stop program = "/etc/init.d/redis-server stop"
if failed host 127.0.0.1 port 6379 then restart
if 5 restarts within 5 cycles then timeout
Let’s add configuration section first into /etc/monit/monitrc:
set mail-format {
from: monit@yourwebsite.com
subject: monit alert -- $EVENT
message: $EVENT Service $SERVICE
Date: $DATE
Action: $ACTION
Host: $HOST
Description: $DESCRIPTION
Your
Monit }
set mailserver smtp.sendgrid.net port 587
username XXX password "XXX"
using TLSV1 with timeout 30 seconds
set alert youremail@website.com
And simple restart Monit with:
sudo /etc/init.d/monit restart
Final
Example email with Monit service monitoring alert:
