Network Management

SolarWinds Platform: Move nodes to the correct polling engine and remove old engine entries with previous IP address

Move nodes to the correct polling engine and remove old engine entries with previous IP address. Two primary polling engines in the SolarWinds Platform are caused by an incorrect Dual (OLD) primary engine entry in the database (Engines table) and the nodes assigned to the old engine entry. To see all nodes are still associated to the old engine, go to Settings > All Settings > Polling Engines.

First published date

10/25/2018 8:07 PM

Last published date

11/12/2025 4:33 PM

Overview

This article shows how to move nodes to the correct polling engine and remove old engine entries with previous IP address.
 

Why are there 2 primary polling engines in the SolarWinds Platform?

There is an incorrect Dual (OLD) primary engine entry. The SolarWinds Platform sees the old polling engine entry, and the nodes are assigned to the old engine entry in the database (Engines table).

To verify the issue, go to Settings > Polling Engines. You can see that all nodes are still associated to the old engine.

Product section

Network Performance Monitor

Cause

  • The hostname of the SolarWinds Platform server changed.
  • The SolarWinds Platform was migrated to another server with a new hostname or IP.
  • The SolarWinds Platform IP address changed.
  • There was a fresh installation on a new SolarWinds Platform server using the old database with the new IP address assigned to the SolarWinds Platform server.

Resolution

Move all nodes to the correct polling engine:

  1. Go to Settings > Manage Nodes, and select the "No Grouping" filter.
  2. Select the box at the top to select all nodes.
  3. Click Edit Properties, scroll down to the Polling section, and select the Polling box.
  4. Click Change Polling Engine. 
  5. Select the active polling engine.
  6. Click Submit.

All nodes are now moved to the active polling engine.

 

Remove unused/down polling engines.

  1. Go to Settings > All Settings > Polling Engines, and click Delete unused polling engine.

    Notice that there are 0 elements assigned to the old polling engine.

  2. Restart all SolarWinds Platform services.

The polling engine is deleted.


You can also navigate through the SolarWinds Platform database manager :

Remove old polling engines and websites from previous migrations in the SolarWinds Platform