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title: Tableau Server Topology Changes
collection: tableau
version: current
locale: en-gb
portal_url: https://docs.salesforce.com/tableau/current/en-gb/server-linux/rmt-tableau-server-topology-changes.md
canonical_url: https://help.tableau.com/current/server-linux/en-gb/rmt-tableau-server-topology-changes.htm
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content_type: documentation
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description: Update the Resource Monitoring Tool after Tableau Server topology changes.
---
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# Tableau Server Topology Changes

This article will help you understand what you need to do when you make certain topology changes to Tableau Server. The changes include: adding or removing a node, adding or removing a process from a node and changing the number of processes on a node.

## Adding a Node

When you add a new node to Tableau Server, you must install the agent on this node. For more information on installing Agent on Tableau Server cluster, see [Install the Tableau Resource Monitoring Tool](https://help.tableau.com/current/server-linux/en-gb/rmt-admin-installation.htm#installing-agent-on-multinode-tableau-server). Until you install the agent, information about this node will not be included in the reports.

## Removing a Node

When you remove an existing node from a Tableau Server cluster, you must update the environment on the RMT Server.

**Use the following steps to update the environment:**

1. Log in to the RMT Server web interface.
2. From the **Admin** menu, choose **Environments**. Select the environment that should reflect this change.
    
    ![Tableau Resource Monitoring Tool Admin menu.](/tableau/current/en-gb/server-linux/en-gb/Img/rmt-admin-environment-menu.png)
3. Choose **Edit Environment**. This opens more detailed information about the environment.
    
    ![Buttons for creating and editing environments.](/tableau/current/en-gb/server-linux/en-gb/Img/rmt-env-edit.png)
4. From the **Servers** tab, select the node that was removed from Tableau Server, and choose **Delete**.
    
    Note: The host name should match the name or the IP address of the node.
    
    ![The Servers control panel within the Demo Dot environment.](/tableau/current/en-gb/server-linux/en-gb/Img/rmt-remove-node.png)

## Re-registering an Agent

There can be situations when you might want to re-register an Agent. One such use case might be when you want to point one node or the entire Tableau Cluster to a different environment. Another example might be if you had to re-image a Tableau Server node and need to install and re-register the Agent. Use the following instructions to re-register the Agent.

1. On the RMT Server web interface, navigate to **Admin** -> **Environments**. Select the environment. From the **Servers** tab, click delete to completely remove the Agent registration for this node on this environment. This also removes historical monitoring data that has been collected on this node. Use this for scenarios where you are ok with losing the history. For example, if you planning to point this node to a new environment, it might be acceptable to remove the historical data and start fresh.

**Note:** In the RMT Server web interface, each node in a Tableau Server is referred to as a **Server**. The entire Tableau Server constitutes an environment. For more information, see [Concepts](https://help.tableau.com/current/server-linux/en-gb/rmt-concepts.htm)

## Who can do this

To make topology changes, you must be both a Tableau Server Administrator and a Resource Monitoring Tool Administrator.