Buoyant Enterprise for Linkerd

enterprise-2.18.2

July 9, 2025

The 2.18.2 stable point release includes a proxy bugfix, adds a signed multiarch SBOM index, and removes an incorrect deprecation warning in the linkerd upgrade command.

Previous release: enterprise-2.18.1.

Supported Kubernetes versions

For this release, the minimum supported Kubernetes version remains 1.22, and the maximum supported Kubernetes version remains 1.32.

Who should upgrade?

Customers using BEL 2.18.0 or 2.18.1 who have HTTP/1 connections with idle periods of 30 seconds or more should upgrade to avoid unnecessary connection reestablishment and log messages. Customers interested in automating SBOM validation across architectures should upgrade to take advantage of the new attestations. All other customers may upgrade at their convenience.

Upgrade guidance

This is a stable point release designed to introduce minimal change. Please see the instructions in Upgrading BEL for how to upgrade.

To upgrade with BEL’s lifecycle automation operator, you will need Buoyant Extension version v0.36.0 or later.

Changelog

  • Fix a regression introduced in BEL 2.18.0 that could cause idle HTTP/1 connections to timeout after 30s. (linkerd2-proxy#3985)
  • Publish signed multiarch SBOM index files as part of the release process.
  • Stop emitting a deprecation warning if linkerd upgrade is run. A deprecation warning will still be emitted if linkerd viz upgrade is run.