In a TAC, you can create a partially connected cluster using the Connecting Setting feature. In a partially connected cluster, the nodes selectively communicate with other nodes in the cluster without disconnecting the graph. If you want to avoid redundant information between certain nodes in the cluster, you can block the direct communication between them.
This feature is only supported if the Cluster-Consul-Integration and Consul components are not installed on your system.
The following figure shows a partially connected cluster connected graph with four nodes, where the nodes selectively communicate with some nodes in the cluster.
As shown in the figure, the direct communication between nodes C and D, A and D, B and C are blocked. If node B requires information about node C, it receives information from node A. The cluster is a fully connected graph where you can communicate directly or indirectly with every node in the cluster.
In a disconnected graph, there is no communication path between one node and other nodes in the cluster. You cannot create a TAC with a disconnected graph.
In a partially connected cluster, as some nodes are not connected to each other directly, there might be a delay in propagating data, depending on the path that the data needs to traverse.
This section describes the steps to set the connection settings for nodes in a cluster.
To set connection settings for nodes in the cluster:
In the CLI Manager, navigate to Tools > Trusted Appliances Cluster > Connection Management: Set connection settings for cluster nodes.
The following screen appears.
Select the required node in the cluster.
Select Choose.
The list of connection settings between the node and other nodes in the cluster appears.
Press SPACEBAR to toggle the connection setting for a particular node.
Select Apply.
The connection settings for the node are saved.
Caution: You can only create cluster export tasks between nodes that are directly connected to each other.