{"schema_version":"1","generated_at":"2026-11-15T07:02:00.230Z","addon":{"slug":"longhorn","name":"Longhorn","category":"Storage","summary":"Distributed block storage. Each release’s best-practices page states a minimum Kubernetes version and the minors that were tested.","project_url":"https://longhorn.io","repo":"longhorn/longhorn","compatibility_doc":"https://longhorn.io/docs/1.13.0/best-practices/","matrix_status":"published","last_checked":"2026-11-15","statement":"The v1.13.0 release notes say clusters must be running Kubernetes v1.34 or later before installing or upgrading to Longhorn v1.13.0, because the CSI external-provisioner is v6.3.0. The v1.13.0 best-practices page still says the minimum is v1.21 and lists 1.36, 1.35, 1.34, and 1.33 as tested. The release notes are the install gate, so 1.33 and older are not supported for v1.13.0 even though that best-practices page still lists 1.33. Longhorn v1.12.2’s best-practices page requires at least v1.21 and lists 1.37, 1.36, 1.35, and 1.34 as tested.","notes":"The v1.13.0 best-practices page and the v1.13.0 release notes disagree on the minimum. The grid follows the release notes for the minimum and keeps 1.34, 1.35, and 1.36 as the tested minors that are also allowed by that minimum. Helm chart name is longhorn.","retirement":null,"sources":[{"title":"v1.13.0 release notes","url":"https://github.com/longhorn/longhorn/releases/tag/v1.13.0"},{"title":"Best practices (v1.13.0)","url":"https://longhorn.io/docs/1.13.0/best-practices/"},{"title":"Best practices (v1.12.2)","url":"https://longhorn.io/docs/1.12.2/best-practices/"}],"match":{"charts":["longhorn"],"images":[]},"align":null,"requirements":[],"releases":[{"version":"1.13","match":{"minor":"1.13"},"kubernetes":{"1.31":"unsupported","1.32":"unsupported","1.33":"unsupported","1.34":"tested","1.35":"tested","1.36":"tested"},"current":true,"note":"Release notes require Kubernetes v1.34 or later. 1.34, 1.35, and 1.36 are on the best-practices tested list and meet that minimum. 1.33 is on that tested list but is below the v1.34 release-note gate, so it is not supported. 1.37 is not on the tested list."},{"version":"1.12","match":{"minor":"1.12"},"kubernetes":{"1.34":"tested","1.35":"tested","1.36":"tested","1.37":"tested"},"note":"Minimum Kubernetes v1.21. Tested list on the v1.12.2 page: 1.37, 1.36, 1.35, 1.34."}],"latest_release":{"tag":"v1.13.0","published":"2026-09-29","url":"https://github.com/longhorn/longhorn/releases/tag/v1.13.0"},"html_url":"https://addonmatrix.dev/addons/longhorn/"}}