> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/control-center/2025.5.2.md).

# 2025.5.2

Release notes for GridGain Control Center 2025.5.2.

## What's New in This Release

GridGain® Control Center is a comprehensive, customizable cluster management and developer tool for Apache® Ignite™ and GridGain applications. Use Control Center to query data across caches, monitor performance metrics, define and track production alerts, take snapshots for backup and recovery, and collect and analyze API traces. The latest Control Center release, 2025.5.2, is a patch release that addresses several issues identified in previous versions.

## GridGain 9 Connector Support Scope

GridGain Control Center supports GridGain 9 versions 9.1.0 and later and Apache Ignite 3.1.0 and later.

You need to update [Cloud Connector](/docs/tools/enterprise/control-center/gg9/cloud-connector/connect-cloud-connector.md) to the latest version (2025.5.2) to securely connect your GridGain 9 and Apache Ignite 3 clusters to Control Center.

## Recommended Upgrade Process

When upgrading to GridGain 9.1.16 or later, it is recommended to update to Control Center 2025.5.2 first. This ensures that you will be able to monitor your cluster without interruptions or issues with data.

## Improvements and Fixed Issues

### Control Center Changes

| Issue ID | Category | Description                                                                                                                   |
| -------- | -------- | ----------------------------------------------------------------------------------------------------------------------------- |
| CC-12379 | General  | Updated the System view widget to include the Global zone partition states and Local zone partition states views.             |
| CC-12376 | General  | Updated commons-compress dependency version to 1.28.0.                                                                        |
| CC-12373 | General  | Removed unsupported metrics for GridGain 9 and Apache Ignite 3 clusters.                                                      |
| CC-12368 | General  | Cloud Connector event log processing no longer writes unnecessary logs.                                                       |
| CC-12367 | General  | Fixed a compatibility issue that prevented the correct collection of Running Queries and Events on GridGain 9.1.16+ clusters. |

## Updating to 2025.5.2

You can update Control Center to 2025.5.2 from 2022.2 and more recent versions. To update from older versions, update to [2022.2](/docs/release-notes/control-center/2022.2.md) first.

1. If you haven't yet, update to Java 17 or 21.
2. Follow the [update instructions](/docs/tools/enterprise/control-center/admin-guide/installation/update.md).

{% hint style="info" %}
In Control Center 2025.1, the default [TTL](/docs/tools/enterprise/control-center/admin-guide/configuration.md#time-to-live-limits) parameters were reduced from 7 days to 1 day. When upgrading from versions earlier than 2025.1, explicitly set the required TTL values in the Control Center configuration **before version upgrade**.
{% endhint %}

### Updating to 2025.5.2 with an External Cluster

If you use an [external](/docs/tools/enterprise/control-center/admin-guide/external-cluster.md) GridGain 8 cluster for data storage, ensure that the cluster version is compatible with the internal Control Center client node. For this release, the required version is **8.9.28**.

Follow these steps to perform the update correctly:

1. Stop Control Center.
2. If an external cluster upgrade is required, follow [upgrade instructions](https://www.gridgain.com/docs/gridgain8/latest/installation-guide/upgrades) or enable [rolling upgrade](https://www.gridgain.com/docs/gridgain8/latest/installation-guide/rolling-upgrades).
3. If you haven't yet, update Control Center to Java 17 or 21.
4. Proceed with the standard Control Center [update instructions](/docs/tools/enterprise/control-center/admin-guide/installation/update.md).