Experimental Dashboard feature causes memory leak in rancher server and cattle-cluster-agent processes in Rancher v2.4.0 - v2.4.2

This document (000020112) is provided subject to the disclaimer at the end of this document.

Situation

Issue

With the experimental Dashboard feature enabled in Rancher v2.4.0 through v2.4.2, the rancher server and cattle-cluster-agent processes will leak memory. As a result the memory usage of these Pods will grow over time, until they restart due to an Out of Memory (OOM) condition.

Pre-requisites

  • A Rancher install with either v2.4.0 or v2.4.2

Workaround

Disable the experimental Dashboard feature within the Rancher UI:

  1. Navigate to the Global View -> Settings -> Feature Flags.
  2. Click the elipses for the dashboard entry and click Deactivate.

Resolution

Upgrade to a newer version of Rancher v2.4.3+.

Further Reading

GitHub issue #26577 GitHub issue #26633

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:000020112
  • Creation Date: 06-May-2021
  • Modified Date:06-May-2021
    • SUSE Rancher

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