Install Monit System Monitor On Ubuntu 18.04

sudo apt update
sudo apt install monit

After installing Monit, the commands below can be used to stop, start and enable Monit service:

sudo systemctl stop monit.service
sudo systemctl start monit.service
sudo systemctl enable monit.service

Configure Monit service

By default all files located on /etc/monit/conf.d/ and /etc/monit/conf-enabled/ are read by monit when the service is started.

Use the /etc/monit/conf.d/ directory to put all your monitoring configuration files in it.

Example: file /etc/monit/conf.d/disk:

check device root with path /
    if SPACE usage > 80% then alert

check device backup_disk with path /mnt/backup
    if SPACE usage > 80% then alert

then:

sudo monit check -t
sudo monit reload
sudo monit start all

Check Monit status

sudo monit status

Access Monit Web Portal

Add this to file /etc/monit/monitrc:

set httpd port 2812
    allow admin:password

then access the web page from anywhere with:

http://host:2812

or:

http://host:2812/_status?format=xml

Dashboards

• Monit Dashboard
• django-monit-collector

References:

• Install Monit System Monitor On Ubuntu 18.04 / 16.04 LTS