Installing Hazelcast

This topic describes how to configure the Hazelcast Platform.

Before you begin

Supported version is Hazelcast 5.3.6.

Procedure

Download the Hazelcast Platform in a compressed file format from the following location.
Hazelcast Platform
Extract the compressed file format to your workstation.
Browse to the /hazelcast-x.x.x/config folder.
Replace the existing hazelcast.xml file with the file that you copy from the $TOP/mdmui/dynamic/hazelcast folder.
Hazelcast 5.3.6To run Hazelcast service, you need to manually add the following in the /hazelcast-x.x.x/bin/hz file.
```
export JAVA_HOME=<jdk17_home path>
```
Use the following command to start the Hazelcast service as a background service.
```
nohup ./hz start &
```

What to do next

You need to configure Hazelcast in the TCP/IP mode to enable discovering cluster members by using TCP. When you configure Hazelcast to discover members by TCP/IP, you must list all or a subset of the members' hostnames, IP addresses or both as the cluster members. You do not have to list all of the cluster members, but at least one of the listed members must be active in the cluster when a new member joins. To set your Hazelcast to be a full TCP/IP cluster, set the following configuration elements:

Set the enabled attribute of the multicast element to "false".
Set the enabled attribute of the aws element to "false".
Set the enabled attribute of the tcp-ip element to "true".
Set your member elements within the tcp-ip element.

For more information on the TCP/IP discovery configuration elements, see tcp-ip element.

<hazelcast>
   ...
  <network>
    ...
    <join>
      <multicast enabled="false">
      </multicast>
      <tcp-ip enabled="true">
        <member>machine1:5702</member>
        <member>machine2:5702</member>
        <member>machine3:5702</member>
      </tcp-ip>
      ...
    </join>
    ...
  </network>
  ...
</hazelcast>

As shown in the example, you can provide IP addresses or hostnames for the member elements. Ensure that you provide the correct port along with the IP address. For more details, see Discovering Members by TCP.