System Alerts - Power

The PSU is one of the most critical parts of the Operations Manager, so it is essential to ensure that the PSU is operating within its design tolerances.

When voltage SNMP alerts are enabled, network operators are immediately notified of PSU failures (subject to network connectivity and latency). Should the PSU begin operating outside design tolerances, PSU-related SNMP Alerts will trigger an alert for the following conditions:

  • Output DC voltage of both PSUs
    If the voltage drops too low, it risks the Operations Manager going into brown-out state. If it gets too high, it can damage components.

System generated SNMP Alerts send SNMP traps to a remote SNMP manager which alerts the user of system events. The Operations Manager can send network, power, and system events to the remote SNMP manager.

Enable Power Supply Syslog Alerts

The System Voltage Range alert sends an alert when the system reboots or the voltage on either power supply leaves or re-enters the fixed voltage range between 11.4V to 12.6V (SNMP) (or 11V to 13V Syslog).

  1. Navigate to Configure > System Alerts > Power.

  2. Click on the Enabled button to activate the function.

    Note: The Disabled button de-activates the power syslog function and power alerts are stopped until activated again

Syslog Alert Severity

  1. For Power Lost alert, click the drop-down list and select the severity level required (default level is 3 - ERROR) when power level is outside the pre-set range.

  2. For Power Restored alert, click the drop-down list and select the severity level required (default is 6 - INFO) after an error condition has been fixed.

  1. Click Apply. The Details Saved banner confirms your settings.

When an event occurs that causes the voltage range on any power supply to leave or re-enter the configured voltage range, it causes an SNMP alert to be triggered. The alert reports the event type and identity and status of the PSU, as in the following example.

Nov 03 06:09:35 om2232 system-alerts[850]: Redundant Supply Active (PSU0 online, PSU1 online)
Nov 03 07:05:02 om2232 system-alerts[850]: Redundant Supply Inactive (PSU0 offline, PSU1 online)
Nov 03 07:05:05 om2232 system-alerts[850]: Redundant Supply Active (PSU0 online, PSU1 online)

To view log severity messages locally, use the journal tool command:
journalctl -f -u alert-logger -o verbose where: f = follow. Check the alert-logger using the systemctl status alert-logger command.