Working with Hazelcast IMDG management center in Java Hazelcast

21 Sep 2023

Hazelcast IMDG (In-Memory Data Grid) is an open-source distributed caching and computing platform that allows you to store and process large amounts of data across multiple servers. It provides high-performance, fault-tolerant, and scalable solutions for various use cases. One of the essential components of Hazelcast IMDG is the Management Center, which provides a graphical user interface (GUI) for monitoring and managing your Hazelcast clusters.

In this blog post, we will explore how to work with the Hazelcast IMDG Management Center in Java.

Setting up the Management Center

Download and extract the Management Center: Visit the Hazelcast website and download the Management Center distribution package suitable for your operating system.
Start the Management Center: After extracting the contents of the package, navigate to the management-center directory and execute the start.sh (Linux/Mac) or start.bat (Windows) script.
Access the Management Center: Open your browser and enter the URL: http://localhost:8080/hazelcast-mancenter. You should see the Hazelcast Management Center dashboard.

Connecting Hazelcast IMDG to the Management Center

To connect your Hazelcast IMDG cluster to the Management Center, you need to configure the Hazelcast instances in your Java code with the appropriate properties.

Add the Hazelcast Management Center dependency: Include the Hazelcast Management Center dependency in your project’s pom.xml file:

<dependency>
    <groupId>com.hazelcast</groupId>
    <artifactId>hazelcast-mancenter</artifactId>
    <version>${hazelcast.version}</version>
</dependency>

Configure your Hazelcast instances: When creating your Hazelcast instances in Java, configure them with the Management Center properties:

Config config = new Config();
config.setManagementCenterConfig(new ManagementCenterConfig()
        .setEnabled(true)
        .setUrl("http://localhost:8080/hazelcast-mancenter"));
HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance(config);

Here, we enable the Management Center and provide the URL on which it is running.

Start your Hazelcast cluster: Start your Hazelcast IMDG cluster as usual. The cluster members will automatically connect to the Management Center.

Monitoring and Managing Hazelcast IMDG Clusters

Once your Hazelcast IMDG cluster is connected to the Management Center, you can monitor and manage it using the GUI.

The Management Center provides various features, including:

Cluster Summary: View an overview of your cluster, including the number of members, memory usage, and CPU utilization.
Cluster Groups: Organize your cluster members into logical groups.
Maps: View and edit distributed maps in your cluster.
Caches: Monitor and manage the distributed cache instances.
Executors: Track and manage tasks executed on your cluster.
Distributed Objects: Monitor distributed data structures, such as queues, lists, and sets.
WAN Replication: Configure and monitor WAN replication for multi-datacenter deployments.
Security: Configure role-based access control and SSL/TLS settings.

Conclusion

The Hazelcast IMDG Management Center provides a powerful tool for monitoring and managing your Hazelcast IMDG clusters. By following the steps outlined in this blog post, you can easily set up and connect your Java applications to the Management Center for efficient cluster management. With the Management Center’s features at your disposal, you can monitor cluster health, optimize performance, and ensure the smooth operation of your Hazelcast IMDG deployment.

#Hazelcast #IMDG #ManagementCenter #Java