Baseline Topology Screen
Zhanna: does this screen exist in the new UI (after implementing "My Cluster"?)
The Baseline Topology screen provides information about the nodes that are in the baseline topology. The term "baseline topology" refers to a set of nodes that are meant to hold data. Refer to the Baseline Topology page for more information.
Baseline Overview
The following information is available on the Baseline Topology screen:
| Column | Description |
|---|---|
Order |
The order of the node within the cluster. |
Consistent ID |
The consistent ID of the node. |
Node ID |
The ID of the node. |
Status |
Whether the baseline node is online. A node that goes down remains registered in the baseline topology until you manually remove it or until it’s removed automatically through baseline autoadjustment. |
Node Type |
The type of the node: "Coordinator" or "Server". |
Adding/Removing Nodes from Baseline
You cannot remove online nodes from the baseline topology. Therefore, before you remove an online node from the baseline, you must stop the node. Changes in the baseline topology trigger a rebalancing of the data (depending on the cluster configuration). Rebalancing can impact cluster performance for the duration of the rebalancing process.
To remove a node from the baseline topology:
-
Stop the node.
-
Switch off the Baseline control.
-
Click APPLY BASELINE.
To add a node to the baseline topology:
-
Start the node and wait until it connects to the cluster.
-
Go to the Baseline screen in Control Center.
-
Switch on the Baseline control for the node.
-
Click APPLY BASELINE.
Enabling Baseline Autoadjustment
The baseline autoadjustment feature changes the baseline automatically when the cluster topology has been stable for a specified period.
You can enable baseline autoadjustment and set the timeout in the top-right corner of the Baseline screen. The timeout is set in seconds.
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