> 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/columnstore/cmapi/release-notes-for-cluster-management-api-1-6-3.md).

# Release Notes for Cluster Management API 1.6.3

Cluster Management API (CMAPI) 1.6.3 is a maintenance release of CMAPI. CMAPI is a REST API for administering [MariaDB ColumnStore](/docs/analytics/mariadb-columnstore.md) in multi-node topologies.

Cluster Management API 1.6.3 was released on 2022-04-20. This release is of General Availability (GA) maturity.

CMAPI 1.6.3 is compatible with MariaDB ColumnStore 5.6 and 6. CMAPI 1.6.3 was first released with [MariaDB ColumnStore 5.6.5](/docs/release-notes/columnstore/old-releases/mariadb-columnstore-5-6-release-notes/mariadb-columnstore-5-6-5-release-notes.md) and [MariaDB ColumnStore 6.2.3.](/docs/release-notes/columnstore/old-releases/mariadb-columnstore-6-release-notes/mariadb-columnstore-6-2-3-release-notes.md)

## Notable Changes

* When a node is added to the cluster using a DNS name, the node's DNS name is added to `Columnstore.xml` instead of the node's IP address. ([MCOL-4804](https://jira.mariadb.org/browse/MCOL-4804))
  * Prior to this release, when a node's IP address changed after it was added to the cluster, `Columnstore.xml` still contained the node's old IP address.
  * Starting with this release, CMAPI can adapt to changing IP addresses when the DNS name in `Columnstore.xml` resolves to the new IP address.

## Issues Fixed

After the primary server is killed and restarted, MaxScale and CMAPI could each choose different primary servers. ([MCOL-5052](https://jira.mariadb.org/browse/MCOL-5052))

## Platforms

In alignment to the MariaDB Corporation Engineering Policy, CMAPI 1.6.3 is provided for:

* CentOS 7 (x86\_64)
* Debian 10 (x86\_64)
* Red Hat Enterprise Linux 7 (x86\_64)
* Red Hat Enterprise Linux 8 (x86\_64)
* Ubuntu 18.04 (x86\_64)
* Ubuntu 20.04 (x86\_64)

## Installation Instructions

* [ColumnStore Object Storage Topology with MariaDB Enterprise Server 10.5](/docs/server/architecture/topologies/columnstore-object-storage.md)[ and MariaDB ColumnStore 5](/docs/server/architecture/topologies/columnstore-object-storage.md)
* [ColumnStore Object Storage Topology with MariaDB Enterprise Server 10.6](/docs/server/architecture/topologies/columnstore-object-storage.md)[ and MariaDB ColumnStore 6](/docs/server/architecture/topologies/columnstore-object-storage.md)
* [ColumnStore Shared Local Storage Topology with MariaDB Enterprise Server 10.5](/docs/server/architecture/topologies/columnstore-shared-local-storage.md)[ and MariaDB ColumnStore 5](/docs/server/architecture/topologies/columnstore-shared-local-storage.md)
* [ColumnStore Shared Local Storage Topology with MariaDB Enterprise Server 10.6 and MariaDB ColumnStore 6](/docs/server/architecture/topologies/columnstore-shared-local-storage.md)

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