Redis Enterprise Software release notes 7.4.2

New Cluster Manager UI enhancements, including Active-Active database management. Full TLS 1.3 support. Automatic recovery configuration. Full IPv6 support, including for internal traffic. Maintenance mode enhancements. Module management enhancements. RHEL 9 support.

​​Redis Enterprise Software version 7.4.2 is now available!

Highlights

This version offers:

• New Cluster Manager UI enhancements, including Active-Active database management

• Full TLS 1.3 support

• Automatic recovery configuration

• Full IPv6 support, including for internal traffic

• Maintenance mode enhancements

• Module management enhancements

• RHEL 7 and Oracle Linux 7, which were previously deprecated, are no longer supported

• RHEL 9 support

Detailed release notes

For more detailed release notes, select a build version from the following table:

Version changes

Deprecations

API deprecations

• The replica HA cluster policy is deprecated.

• The maintenance mode option keep_slave_shards is deprecated in rladmin and the REST API. Use evict_ha_replica and evict_active_active_replica instead.

• /v1/debuginfo REST API paths are deprecated. Use the new paths /v1/cluster/debuginfo, /v1/nodes/debuginfo, and /v1/bdbs/debuginfo instead.

Legacy UI deprecation

The legacy UI is deprecated in favor of the new Cluster Manager UI and will be removed in a future release.

Redis 6.0 database deprecation

Redis database version 6.0 is deprecated as of Redis Enterprise Software version 7.4.2 and will be removed in a future release.

To prepare for the future removal of Redis 6.0:

• For Redis Enterprise 6.2.* clusters, upgrade Redis 6.0 databases to Redis 6.2. See the Redis 6.2 release notes for the list of changes.

• For Redis Enterprise 7.2.4 and 7.4.2 clusters, upgrade Redis 6.0 databases to Redis 7.2. Before you upgrade your databases, see the list of Redis 7.2 breaking changes and update any applications that connect to your database to handle these changes.

Operating system retirements

• RHEL 7 and Oracle Linux 7 were previously announced as deprecated in the Redis Enterprise Software 7.2.4 release notes. As of Redis Enterprise Software 7.4.2, RHEL 7 and Oracle Linux 7 are no longer supported.

Security retirements

• The RC4 encryption cipher, which was previously deprecated in favor of stronger ciphers, is no longer supported.

• The 3DES encryption cipher, which was previously deprecated in favor of stronger ciphers like AES, is no longer supported. Verify that all clients, applications, and connections support the AES cipher.

• TLS 1.0 and TLS 1.1 connections, which were previously deprecated in favor of TLS 1.2 or later, are no longer supported. Verify that all clients, applications, and connections support TLS 1.2 or later.

Supported platforms

The following table provides a snapshot of supported platforms as of this Redis Enterprise Software release. See the supported platforms reference for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Enterprise Software and Redis Stack modules.

⚠️ Deprecation warning – The platform is still supported for this version of Redis Enterprise Software, but support will be removed in a future release.

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the Redis Enterprise for Kubernetes documentation for details about support per version and Kubernetes distribution.

4. Docker images of Redis Enterprise Software are certified for development and testing only.

Known issues

• RS61676: Full chain certificate update fails if any certificate in the chain does not have a Common Name (CN).

• RS119958: The debuginfo script fails with the error /bin/tar: Argument list too long if there are too many RocksDB log files.

• RS122570: REST API POST /crdbs responds with a confusing error message if the cluster does not have the requested CRDB-compatible module that complies with the requested featureset.

• RS123142: In an Active-Active setup with at least three participating clusters, removing and re-adding a cluster after removing older clusters without re-adding them can cause missing keys and potentially lead to data loss or data inconsistency.

  This issue will be fixed in a future maintenance release. To prevent this issue, avoid adding clusters until you upgrade to the upcoming maintenance release when available.

Known limitations

New Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

• Remove a node.

  Use the REST API or legacy UI instead. See Remove a cluster node for instructions.

• Purge an Active-Active instance.

  Use crdb-cli crdb purge-instance instead.

• Search and export the log.

OpenSSL compatibility issue for 7.4.2 modules on Amazon Linux 2

Due to an OpenSSL 1.1 compatibility issue between modules and clusters, Redis Enterprise Software version 7.4.2-54 is not fully supported on Amazon Linux 2 clusters with databases that use the following modules: RedisGears, RediSearch, or RedisTimeSeries.

This issue will be fixed in a future maintenance release.

RedisGraph prevents upgrade to RHEL 9

You cannot upgrade from a prior RHEL version to RHEL 9 if the Redis Enterprise cluster contains a RedisGraph module, even if unused by any database. The RedisGraph module has reached End-of-Life and is completely unavailable in RHEL 9.

Cannot create Redis v6.x Active-Active databases with modules

You cannot create Active-Active databases that use Redis version 6.0 or 6.2 with modules. Databases that use Redis version 7.2 do not have this limitation.

This limitation was fixed in Redis Enterprise Software version 7.4.2-104.

Firewalld configuration fails on RHEL 9 due to file permissions

When you install Redis Enterprise Software version 7.4.2 on RHEL 9, firewalld configuration fails to add the redislabs service if /etc/firewalld/services/redislabs-clients.xml and /etc/firewalld/services/redislabs.xml are owned by redislabs instead of root.

As a workaround:

1. Change the files' owner and group to root:

   $ chown root:root /etc/firewalld/services/redislabs-clients.xml
   $ chown root:root /etc/firewalld/services/redislabs.xml
   

2. Add the redislabs service to firewalld:

   $ systemctl daemon-reload
   $ systemctl restart firewalls
   $ /bin/firewall-cmd --add-service=redislabs
   

This limitation was fixed in Redis Enterprise Software version 7.4.2-129.