Network Management

Additional Polling Engine status is Down and database connection errors appear in logs

This article addresses an issue in the Orion Web Console > Polling Engine Details page that causes the Additional Polling Engine (APE) to display an Offline status. Orion database connection errors occur in logfiles.

First published date

10/23/2018 8:44 PM

Last published date

12/9/2021 7:14 AM

Overview

In the Orion Web Console, the Additional Poller Engine (APE) displays an Offline status on the Polling Engines Details page. The issue persists after performing the following procedures:

Reboot the Orion server.
Stop and run the SolarWinds services repeatedly. For details, see Start, Stop, or Restart Orion Services with the Orion Service Manager.
Completed steps in Additional Polling Engine is down or is not polling.

When you review logs, messages indicate Orion database connection errors from the Additional Polling Engine:

ERROR SolarWinds.BusinessLayerHost.BusinessLayerHostService - Unhandled exception caught by business layer host. System.Data.SqlClient.SqlException (0x80131904): Login failed. The login is from an untrusted domain and cannot be used with Windows authentication.

The default location for log files is C:\ProgramData\Solarwinds\Logs.

Product section

Network Performance Monitor

Cause

The Orion database password was changed but was not updated on the APE.

Resolution

Run the Orion Configuration Wizard to refresh Orion files and update the database password.

Log into the APE as a Windows Local Administrator.
Click Start > SolarWinds Orion > Configuration Wizard.
On the Database Settings page of the wizard, provide the latest Orion database password.
Continue in the wizard, and then click Finish to save your changes.

Additional items to check for APEs include:

Check if the APE license was activated.
In the Orion Web Console, click Settings > All Settings > Polling Engines to verify that the version of the affected APE matches the version of the Main Polling Engine. If the versions do not match, upgrade the APE to match the version of the Main Polling Engine. To upgrade, click Settings > All Settings > Polling Engines. On the Polling Engines page, click Download Installer Now and then launch the Orion Installer. For details, see Scalability Engine Guidelines for SolarWinds products .
Check if the APE is using DHCP instead of a static IP address.

Disclaimer: Please note, any content posted herein is provided as a suggestion or recommendation to you for your internal use. This is not part of the SolarWinds software or documentation that you purchased from SolarWinds, and the information set forth herein may come from third parties. Your organization should internally review and assess to what extent, if any, such custom scripts or recommendations will be incorporated into your environment. You elect to use third-party content at your own risk, and you will be solely responsible for the incorporation of the same if any.