Campaign | unicaACListener | node [n]

This property applies only if you have a clustered listener configuration. This property identifies each individual listener node in a cluster.

For each node, specify the hostname of the machine where the Unica Campaign listener is installed.

No default value assigned.

This property applies only if you have a clustered listener configuration. This property identifies the port that is used for communication between each clustered listener node and the Unica Campaign web application server.

The specified port is also used for communication between listener nodes.

No default value assigned.

Optional. This property applies only if you have a clustered listener configuration. You can set this property for each clustered listener node. For information about how to use this property, read the description for Campaign|unicaACListener|serverPort2.

Optional. This property applies only if you have a clustered listener configuration. You can set this property for each clustered listener node. For information about how to use this property, read the description for Campaign|unicaACListener|serverPort2.

3

This property applies only if you have a clustered listener configuration.

A cluster always includes one master listener. All clients, including the Unica Campaign web server application, the Unica Campaign Server Manager (unica_svradm), and utilities such as unica_acsesutil, use the masterListenerPriority to identify the master listener.

Any node in the cluster can act as the master listener. The masterListenerPriority determines which node initially acts as the master listener. It also determines which listener will take over as the master listener in failover situations. Ideally, the listener node with the most processing power should be assigned the highest priority.

Priority 1 is the highest priority. Assign a 1 to the machine that you want to be the master listener. That machine will serve as the master listener unless it goes down or cannot be contacted, for example due to a network issue. Assign a 2 to the next machine, and so on.

You must assign a priority to every listener in the cluster. If you do not want a machine to serve as the master listener, assign it the lowest priority (10). However, you cannot prohibit a listener from being designated as master. In a clustered listener configuration, one listener must always serve as the master.

If the designated master listener cannot be contacted, then the next machine becomes the master listener, based on its assigned priority.

If multiple nodes have the same priority, the system selects the first of those nodes from the list of nodes in this category.

No default value assigned.

1 (high) through 10 (low)

This property applies only if you have a clustered listener configuration. This property controls load balancing among clustered nodes. Each node in a cluster can process a portion of the total application traffic. Adjust the weight for each listener node to determine how much load the node will get. A higher value assigns a greater proportion of the load, so more transactions are given to that listener node.

Assign higher values to machines that have more processing capacity. Assign lower values to less powerful or more heavily loaded machines. A value of 0 prohibits the listener from processing any transactions and typically is not used. If multiple nodes have the same weight, the system selects the first of those nodes from the list of nodes in this category.

You have four physical hosts: A, B, C and D.

Host A is the most powerful machine and Host D is the least capable, so you assign weights as: A=4, B=3, C=2, D=1 In terms of loads handled, listeners will process loads in these proportions: A - 40%, B - 30%, C - 20%, D - 10% For each incoming request to handle Campaign flowchart or Optimize session executions, the master listener will try to see that the listeners have loads in above proportion. For example, if after calculating total load across all the listeners A is having 30% of load then the next request will go to A.

Value-1 shows that this particular node executes only flowcharts. No Optimize session execution request can be redirected to this type of listener node.

Value-2 shows that this particular node only executes Optimize sessions. No flowchart execution request can be redirected to this type of listener node.

Value-3 shows that this particular node executes both flowcharts and optimize sessions. So any request can be redirected to this type of node.