Ans. Once Glassfish DAS starts you can create multiple clusters in your local glassfish:

Commands:

Create Cluster:

$ bin/asadmin create-cluster cluster1
Command create-cluster executed successfully.

Create Instance (instance1):

$ bin/asadmin create-local-instance --cluster cluster1 instance1
Rendezvoused with DAS on localhost:4848.
Port Assignments for server instance instance1:
JMX_SYSTEM_CONNECTOR_PORT=28686
JMS_PROVIDER_PORT=27676
HTTP_LISTENER_PORT=38080
ASADMIN_LISTENER_PORT=24848
JAVA_DEBUGGER_PORT=29009
IIOP_SSL_LISTENER_PORT=23820
IIOP_LISTENER_PORT=23700
OSGI_SHELL_TELNET_PORT=26666
HTTP_SSL_LISTENER_PORT=28181
IIOP_SSL_MUTUALAUTH_PORT=23920
Command create-local-instance executed successfully.

Create Instance (instance2):

$ asadmin create-local-instance --cluster cluster1 instance2
Rendezvoused with DAS on localhost:4848.
Using DAS host localhost and port 4848 from existing das.properties for node
localhost-domain1. To use a different DAS, create a new node using create-node-ssh or
create-node-config. Create the instance with the new node and correct
host and port:
asadmin --host das_host --port das_port create-local-instance --node node_name instance_name.
Port Assignments for server instance instance2:
JMX_SYSTEM_CONNECTOR_PORT=28687
JMS_PROVIDER_PORT=27677
HTTP_LISTENER_PORT=38081
ASADMIN_LISTENER_PORT=24849
JAVA_DEBUGGER_PORT=29010
IIOP_SSL_LISTENER_PORT=23821
IIOP_LISTENER_PORT=23701
OSGI_SHELL_TELNET_PORT=26667
HTTP_SSL_LISTENER_PORT=28182
IIOP_SSL_MUTUALAUTH_PORT=23921
Command create-local-instance executed successfully.

Start a cluster:
$ bin/asadmin start-cluster cluster1
Command start-cluster executed successfully.

The same way you can create another cluster.

You can check summary on clusters by below command:
$ bin/asadmin list-instances -l
NAME HOST PORT PID CLUSTER STATE
instance1 localhost 24848 15421 cluster1 running
instance2 localhost 24849 15437 cluster1 running
Command list-instances executed successfully.

To Stop Cluster:
Stop a cluster:
$ bin/asadmin stop-cluster cluster1
Command stop-cluster executed successfully.

Posted on Aug 01, 2014 by Shelly