You need a working sendmail command for email alerts to work. Almost all MTAs provide a sendmail interface.

Netdata sends all emails as user netdata, so make sure your sendmail works for local users.

email notifications look like this:



To edit health_alarm_notify.conf on your system run /etc/netdata/edit-config health_alarm_notify.conf.

You can configure recipients in /etc/netdata/health_alarm_notify.conf.

You can also configure per role recipients in the same file, a few lines below.

Changes to this file do not require a Netdata restart.

You can test your configuration by issuing the commands:

# become user netdata
sudo su -s /bin/bash netdata

# send a test alarm
/usr/libexec/netdata/plugins.d/ test [ROLE]

Where [ROLE] is the role you want to test. The default (if you don’t give a [ROLE]) is sysadmin.

Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under /usr/lib/netdata). You can always find the location of the script in netdata.conf.