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# Netdata alarm notifications
The `exec` line in health configuration defines an external script that will be called once
the alarm is triggered. The default script is **[alarm-notify.sh](alarm-notify.sh.in)**.
You can change the default script globally by editing `/etc/netdata/netdata.conf`.
`alarm-notify.sh` is capable of sending notifications:
- to multiple recipients
- using multiple notification methods
- filtering severity per recipient
It uses **roles**. For example `sysadmin`, `webmaster`, `dba`, etc.
Each alarm is assigned to one or more roles, using the `to` line of the alarm configuration.
Then `alarm-notify.sh` uses its own configuration file `/etc/netdata/health_alarm_notify.conf`
the default is [here](health_alarm_notify.conf)
(to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`)
to find the destination address of the notification for each method.
Each role may have one or more destinations.
So, for example the `sysadmin` role may send:
1. emails to admin1@example.com and admin2@example.com
2. pushover.net notifications to USERTOKENS `A`, `B` and `C`.
3. pushbullet.com push notifications to admin1@example.com and admin2@example.com
4. messages to slack.com channel `#alarms` and `#systems`.
5. messages to Discord channels `#alarms` and `#systems`.
## Configuration
Edit [`/etc/netdata/health_alarm_notify.conf`](health_alarm_notify.conf)
by running `/etc/netdata/edit-config health_alarm_notify.conf`:
- settings per notification method:
all notification methods except email, require some configuration
(i.e. API keys, tokens, destination rooms, channels, etc).
2. **recipients** per **role** per **notification method**
## Testing Notifications
You can run the following command by hand, to test alarms configuration:
```sh
# become user netdata
su -s /bin/bash netdata
# enable debugging info on the console
export NETDATA_ALARM_NOTIFY_DEBUG=1
# send test alarms to sysadmin
/usr/libexec/netdata/plugins.d/alarm-notify.sh test
# send test alarms to any role
/usr/libexec/netdata/plugins.d/alarm-notify.sh test "ROLE"
```
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