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Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > How to move nodes to a new polling engine

How to move nodes to a new polling engine

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Created by Interspire Import, last modified by MindTouch on Jun 23, 2016

Views: 3,485 Votes: 1 Revisions: 8

Assigning Nodes To A New Polling Engine

If a new name is used for the new Orion NPM server, it is added to the database as a new polling engine. All current nodes remain assigned to the old polling engine name and must be reassigned to the new polling engine. 
When the Configuration Wizard is run, it compares the name of the server it’s installed on to the name of the current polling engine. If they are not the same, then the Config Wizard sets up a net Polling Engine entry in the Engines table of the database. This change occurs any time the software is moved to a new server, or when the name of the server changes and the Config Wizard is run.
After this process, the nodes must be moved from the polling engine with the old name to the polling engine with the new name.

If both polling engines are in the up state, you can use the Orion Web Console to move the nodes. For more information, see "Changing Polling Engine Node Assignment" in the Orion Platform Webhelp.

If one of the polling engines is in the down state, complete the following steps to reassign the nodes to the new polling engine:

  1. Click Start > All Programs > SolarWinds Orion > Advanced Features > Orion Service Manager.
  2. Stop all SolarWinds services.
    • If you have more than one Polling Engine, you will need to stop each additional Polling Engine before continuing.
    • Do not stop the SQL Service. The SQL Service needs to be running in order to make the necessary changes to the database.
  3. Click Start > SolarWinds Orion > Database Utilities > Database Manager.
  4. Expand your SQL Server in the tree.
  5. Click Add Default Server to display your Orion database and expand the Orion database.
    Note: By default, this database is named SolarWindsOrion in Orion Core 2012 and newer versions, and NetPerfMon in older Orion Core versions.
  6. Right-click on the Engines table, and then click Query Table.
  7. Click Execute Query to display the table entries.
  8. Select Enable Table Editing (Results can be edited).
  9. Replace the value in the ServerName field for the old polling engine with the server name of the new polling engine.
    Note: It is not necessary to update the IP field. The next time the service is started, Orion NPM discovers the new IP address, and the IP field is updated automatically.
  10. Delete the newly added engine from the table by clicking on the blank area to the left of the row to select it. Right-click anywhere in the selected row, and then click Delete Selected Rows.
  11. Click Yes when prompted to confirm deleting the row.
    Note: The final result will display the new server name with the IP address of the old server. The next time the service starts, the IP field will be updated with the IP address of the new server.
  12. Close Database Manager.
  13. Return to the Orion Service Manager and select Start all services.
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