Resource Stickiness parameter created during cluster bootstrap

This document (000021075) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server for SAP 15 SP4
SUSE Linux Enterprise Server for SAP 15 SP3
SUSE Linux Enterprise High Availability Extension 15 SP4
SUSE Linux Enterprise High Availability Extension 15 SP3

Situation

"crm cluster init" automatically creates a default value of "resource-stickiness" with id="build-resource-defaults" and value of "1". This however is different from the recommendation in SUSE best practices for HANA and SAP Applications, for example in the best practice guide for performance optimized HANA the recommended configuration is as below:

rsc_defaults rsc-options: \

    resource-stickiness="1000" \

    migration-threshold="5000"

This makes a duplicate entry for global resource stickiness parameter which is undesirable.

Resolution

As a permanent measure, the crmsh tool in future versions will handle the deletion of this default entry for resource-stickiness with id="build-resource-defaults".
However, until such a time that a permanent solution is released in the updates of "crmsh", as a temporary measure, the entry with id="build-resource-defaults" should be deleted before applying the recommendation from the best practices. Following command can be run to delete the existing entry:

crm_attribute -t rsc_defaults -n resource-stickiness -D

Cause

The default entry during cluster bootstrap is created due to a recent change in pacemaker upstream software.
The link for it is mentioned in the "Additional Information"

Additional Information

https://github.com/ClusterLabs/pacemaker/commit/9aebb08b257f49a9b3f375f97d0f41e8265c481b

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

Document ID:000021075
Creation Date: 17-May-2023
Modified Date:17-May-2023
- SUSE Linux Enterprise High Availability Extension
- SUSE Linux Enterprise Server for SAP Applications

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]suse.com