Alert

FreeNAS® provides an alert system to provide a visual warning of any conditions that require administrative attention. The Alert button in the far right corner will flash red when there is an outstanding alert. For example, the first time you access the administrative GUI, the alert button will be flashing. If you click the icon, you will see the message shown in Figure 9.7a:

Figure 9.7a: Example Alert Message

Behind the scenes, an alert script checks for various alert conditions, such as volume and disk status, and writes the currrent conditions to /var/tmp/alert. A javascript retrieves the current alert status every 5 minutes and will change the solid green alert icon (if there are no current alert conditions) to flashing red (if a new alert is detected).

Some of the conditions that trigger an alert include:

• Plugins Jail IP address is unreachable

• non-optimal multipath states

• UPS ONBATT/LOWBATT event

• ZFS pool status changes from HEALTHY

• the system is unable to bind to the WebGUI Address set in System → Settings → General

• the system can not find an IP address configured on an iSCSI portal