SUSE Linux Enterprise High Availability 16.0

SUSE Linux Enterprise High Availability Release Notes #

Publication Date: 2025-10-16, Version: @VERSION@

SUSE Linux Enterprise High Availability is an enterprise-level clustering solution to implement highly available Linux clusters and eliminate single points of failure. This document provides a high-level overview of features, capabilities, and limitations of SUSE Linux Enterprise High Availability, and highlights important product updates.

1 About the release notes #

These Release Notes are identical across all architectures, and the most recent version is always available online at https://www.suse.com/releasenotes.

Entries are only listed once but they can be referenced in several places if they are important and belong to more than one section.

Release notes usually only list changes that happened between two subsequent releases. Certain important entries from the release notes of previous product versions are repeated. To make these entries easier to identify, they contain a note to that effect.

However, repeated entries are provided as a courtesy only. Therefore, if you are skipping one or more service packs, check the release notes of the skipped service packs as well. If you are only reading the release notes of the current release, you could miss important changes.

1.1 Documentation and other information #

For the most up-to-date version of the documentation for SUSE Linux Enterprise High Availability, see:

2 SUSE Linux Enterprise High Availability Version 16.0 #

These release notes apply to SUSE Linux Enterprise High Availability 16.0.

2.1 Changes affecting all architectures #

2.1.1 Resource agent removal #

Some resource agents have been removed from the resource-agent package:

ldirectord
sfex_*
HA-related part of IPVS
conntrack-tools dependency from ha_sles pattern

2.1.2 Changing when Home directory is created by default #

Previously, creating a Home directory for an user when using the useradd command required the -m argument.

In 16.0, this has been changed and the Home directory is created by default without using any additionalk arguments.

2.1.3 Simplified SBD management #

A new crm sbd command has been added in order to simplify SBD management.

It can:

display the real-time SBD status and the static SBD configuration
manage the configuration file for both disk-based and diskless SBD scenarios, and the on-disk metadata for the disk-based scenario

There is also a crm maintenance command which can help with advanced tasks like kernel crashdump configuration procedure.

2.1.4 GSF2 available, OCFS2 removed #

GFS2 (Global File System 2) is a native, shared-disk cluster filesystem for Linux, allowing multiple servers to concurrently read and write to the same block storage. It uses a Distributed Lock Manager (DLM), typically integrated with Corosync and Pacemaker, to coordinate metadata access and prevent data corruption.

At the same time, the the support for OCFS2 has been removed.

2.2 Changes affecting all architectures (Beta2) #

This section contains information specific to Beta2. We are working on fixing the problems mentioned here. The content of this section will be removed for the final released product.

2.2.1 Unable to add `drbd_passive` #

Attempting to add a drbd_passive resource into a pacemaker cluster results in several error messages. This is due to a missing SELinux policy module.

As a workaround, set SELinux for the drbd_t domain to permissive mode via semanage permissive -a drbd_t. After this bug has been fixed, switch it back enforcing mode via semanage permissive -d drbd_t.

2.2.2 Cluster cannot be initialized #

Running the crm cluster init command results in a Python error.

To resolve this, create home directory for the hacluster user:

usermod -d /var/lib/pacemaker hacluster

2.3 Removed and deprecated features and packages #

This section lists features and packages that were removed from SUSE Linux Enterprise High Availability or will be removed in upcoming versions.

sctp support has been deprecated in kronosnet and to be removed upstream in 2.x
Section 2.1.4, “GSF2 available, OCFS2 removed”

3 Obtaining source code #

This SUSE product includes materials licensed to SUSE under the GNU General Public License (GPL). The GPL requires SUSE to provide the source code that corresponds to the GPL-licensed material. The source code is available for download at https://www.suse.com/download/sle-ha/ on Medium 2. For up to three years after distribution of the SUSE product, upon request, SUSE will mail a copy of the source code. Send requests by e-mail to sle_source_request@suse.com. SUSE may charge a reasonable fee to recover distribution costs.

4 Legal notices #

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