Chapter 4. Clustering with Red Hat Decision Manager for design-time development environments

Procedure

1. Download and unzip the Elasticsearch installation file.

2. Replace the contents of the elasticsearch/config/elasticsearch.yml file as follows, where <MAIN_NODE_IP> is the IP address of the main node of the cluster:

   cluster.name: kie-cluster
   transport.host: <MAIN_NODE_IP>
   http.host: <MAIN_NODE_IP>
   transport.tcp.port: 9300
   xpack.security.enabled: false
   discovery.zen.minimum_master_nodes: 1

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3. Install the following plug-in:

   • On Linux or UNIX-based systems, enter:

     ./bin/elasticsearch-plugin install x-pack

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   • On Windows, enter:

     bin\elasticsearch-plugin.bat install x-pack

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4. Run Elasticsearch on the main node:

   • On Linux or UNIX-based systems, enter:

     ./bin/elasticsearch

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     On Windows, enter:

     bin\elasticsearch.bat

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Procedure

1. Add the following properties to the EAP_HOME/standalone/configuration/standalone.xml file:

   • Add <socket-binding name="activemq" port="61616"/> to the socket-binding-group element.
   • Add <remote-acceptor name="activemq-acceptor" socket-binding="activemq"/> in <server name="default"> of the messaging-activemq subsytem element.
2. Complete the steps in Section 4.3, “Installing Decision Central on cluster nodes” on each node of the cluster.

Procedure

1. Install Decision Central on each node of the cluster. See Chapter 2, Installing Red Hat Decision Manager for information about installing Decision Central.

2. Edit the following properties in the ./standalone.xml file, where:

   • <MAIN_NODE> is the IP address of the main node of the cluster
   • <JMS_BROKER_USER> is a username for the JMS broker

   • <JMS_BROKER_PASSWORD> is a password for the JMS broker

     <system-properties>
       <property name="org.uberfire.nio.git.dir" value="
           <niogit_dir_on_shared_nfs>"/>
       <property name="appformer-cluster" value="true"/>
       <property name="appformer-jms-url" value="tcp://<MAIN_NODE_IP>:61616"/>
       <property name="appformer-jms-username" value="<JMS_BROKER_USER>"/>
       <property name="appformer-jms-password" value="<JMS_BROKER_PASSWORD>"/>
       <property name="org.appformer.ext.metadata.index" value="elastic"/>
       <property name="org.appformer.ext.metadata.elastic.port" value="9300"/>
       <property name="org.appformer.ext.metadata.elastic.host"
           value="<MAIN_NODE_IP>"/>
       <property name="org.appformer.ext.metadata.elastic.cluster"
           value="kie-cluster"/>
       <property name="org.appformer.ext.metadata.elastic.retries" value="10"/>
     </system-properties>

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3. On the main node of the cluster, in Red Hat JBoss EAP create a user with the admin role and a username and password that matches the values of <JMS_BROKER_USER> and <JMS_BROKER_PASSWORD> that you created in the previous step:

   $ <MAIN_NODE_EAP_HOME>/bin/./add-user.sh -a --user <JMS_BROKER_USER> --password <JMS_BROKER_USER> --role admin

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4. To start Decision Central, enter one of the following commands on each node of the cluster:

   • On Linux or UNIX-based systems:

     EAP_HOME/bin/standalone.sh

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   • On Windows:

     EAP_HOME\bin\standalone.bat

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