configure-lb-weight

configure-lb-weight

configure-lb-weight

sets load balancing weights for clustered instances

Synopsis

asadmin [asadmin-options] configure-lb-weight [--help]
--cluster cluster_name
instance-name=weight[:instance-name=weight]

Description

The configure-lb-weight subcommand assigns weight to the server instances in a cluster. Weights can be used for HTTP, RMI/IIOP and JMS load balancing. For the HTTP load balancer, the weights are used only if the load balancer’s policy is set to weighted-round-robin. The load balancer policy is set in the create-http-lb-ref subcommand or set subcommand.

Use the weight to vary the load going to different instances in the cluster. For example, if an instance is on a machine with more capacity, give it a higher weight so that more requests are sent to that instance by the load balancer. The default weight is 100. If all instances have the default weight, the load balancer performs simple round robin load balancing.

Note	This subcommand is only applicable to Oracle GlassFish Server. This subcommand is not applicable to GlassFish Server Open Source Edition.

Options

asadmin-options: Options for the asadmin utility. For information about these options, see the asadmin(1M) help page.
--help
-?: Displays the help text for the subcommand.
--cluster: The name of the cluster.

Operands

instance-name=weight: The name of the instance and the weight you are assigning it. The weight must be an integer. The pairs of instances and weights are separated by colons. For example instance1=1:instance2=4 means that for every five requests, one goes to instance1 and four go to instance2. A weight of 1 is the default.

Examples

Example 1 Assigning Load Balancer Weights to Cluster Instances

The following subcommand assigns weights of 1, 1, and 2 to instances i1, i2, and i3 in the cluster1 cluster.

asadmin> configure-lb-weight --cluster cluster1 i1=1:i2=1:i3=2
Command configure-lb-weight executed successfully.

Exit Status

0: subcommand executed successfully
1: error in executing the subcommand