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Rook

v1.20.9Storage & Data
Oct 14, 2026

ACTION 1CHECK 4OTHER 8

A maintenance release with operator-visible changes to connection security, device handling, configuration, and monitoring. It also includes cleanup and a dependency update.

Action needed (1)

  • breakingPriority class for the detect version job

    The core component now sets a priority class for the detect version job. This job configuration change ships in the core component.

Check if affected (4)

  • breakingSecure msgr2 mode for monitor connections

    Applies if you use ceph.

    Ceph monitor connections now enforce secure msgr2 mode. This connection-handling change ships in the Ceph component.

  • breakingRejection of purely numeric topology values

    Applicability is not stated in the release notes.

    OSD validation now rejects topology values that contain only numbers. The validation change ships in the OSD component.

  • breakingSkipping nbd, drbd, and zram devices during discovery

    Applies if you use nbd, drbd, or zram devices.

    OSD device discovery now skips nbd, drbd, and zram devices. The discovery change ships in the OSD component.

  • breakingFiltering rbd devices from LVM scans

    Applies if you use rbd devices and configure raw-mode activation.

    Raw-mode activation now filters rbd devices from LVM scans. The scan behavior change ships in the OSD component.

All 8 other recorded changesadditions 4 · fixes 2 · value changes 2

additions (4)

  • - object: Add trafficDistribution to the RGW service spec (#18541, @bo0tzz)
  • - external: Resolve provisioner secret names via annotations for external clusters (#17896, @parth-gr)
  • - csi: Allow skipping creating the csi operator resources (#18373, @taraasrita10)
  • - helm: Add additional toolbox configuration to charts/rook-ceph-cluster (#18165, @meln5674)

fixes (2)

  • - monitoring: Correct NVMe-oF gateway CPU alert percentage (#18476, @banlor)
  • - monitoring: Fix pool growth alert threshold (#18453, @banlor)

value changes (2)

  • - nfs: Clean up temporary ganesha config files (#18538, @kediyalua)
  • - core: Bump golang.org/x/net to v0.60.0 (#18540, @OdedViner)
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