metal-stack · metal-robot · Aug 3, 2026 · Aug 3, 2026
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 # metal-stack v0.22.0
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.0](https://github.com/metal-stack/releases/releases/tag/v0.22.0)

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 slug: /release-notes/v0.22.1
 title: v0.22.1
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 # metal-stack v0.22.1
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.1](https://github.com/metal-stack/releases/releases/tag/v0.22.1)

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 slug: /release-notes/v0.22.10
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 # metal-stack v0.22.10
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.10](https://github.com/metal-stack/releases/releases/tag/v0.22.10)

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 slug: /release-notes/v0.22.11
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 # metal-stack v0.22.11
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.11](https://github.com/metal-stack/releases/releases/tag/v0.22.11)

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 slug: /release-notes/v0.22.12
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 # metal-stack v0.22.12
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.12](https://github.com/metal-stack/releases/releases/tag/v0.22.12)

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 slug: /release-notes/v0.22.13
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 # metal-stack v0.22.13
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.13](https://github.com/metal-stack/releases/releases/tag/v0.22.13)

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 slug: /release-notes/v0.22.14
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 # metal-stack v0.22.14
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.14](https://github.com/metal-stack/releases/releases/tag/v0.22.14)

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 slug: /release-notes/v0.22.15
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 # metal-stack v0.22.15
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.15](https://github.com/metal-stack/releases/releases/tag/v0.22.15)

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 slug: /release-notes/v0.22.16
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 # metal-stack v0.22.16
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.16](https://github.com/metal-stack/releases/releases/tag/v0.22.16)

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 slug: /release-notes/v0.22.17
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 # metal-stack v0.22.17
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.17](https://github.com/metal-stack/releases/releases/tag/v0.22.17)

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 slug: /release-notes/v0.22.18
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 # metal-stack v0.22.18
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.18](https://github.com/metal-stack/releases/releases/tag/v0.22.18)
@@ -24,6 +24,10 @@ See original release note at [https://github.com/metal-stack/releases/releases/t
 
 * For operators who already deployed metal-apiserver prior to this release: The field `metal_apiserver_admin_subjects` was removed and should be cleaned up. Admins are now managed through the provider tenant that is automatically ensured on startup of the metal-apiserver. ([release notes](https://github.com/metal-stack/metal-roles/releases/tag/v0.26.0))
 
+* In [#633](https://github.com/metal-stack/metal-roles/pull/633) changes were introduced for the s3 backend configuration used by the `backup-restore-sidecar` component. Unfortunately, the defaults for the Ansible variable `*_backup_restore_sidecar_object_max_keep` were removed in the process.
+So if the corresponding `*_backup_restore_sidecar_object_max_keep` variable for the metal-stack databases (`ipam-db`, `masterdata-db`, `metal-db`) are not explicitly defined in your deployment, the backup lifecycle rule configuration might be modified unexpectedly. So before rolling out metal-stack `v0.22.18` please consider setting those variables explicitly in your deployment. If you want to use the defaults configure e.g. `ipam_db_backup_restore_sidecar_object_max_keep: 480`
+The defaults will be added back again with metal-roles pull request [#699](https://github.com/metal-stack/metal-roles/pull/633).
+
 ## Component Releases
 ### metal-roles v0.27.2
 * ProviderTenant adoptions for metal-apiserver (metal-stack/metal-roles#642) @majst01

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 # metal-stack v0.22.19
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.19](https://github.com/metal-stack/releases/releases/tag/v0.22.19)

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 slug: /release-notes/v0.22.2
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 # metal-stack v0.22.2
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.2](https://github.com/metal-stack/releases/releases/tag/v0.22.2)

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+slug: /release-notes/v0.22.20
+title: v0.22.20
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+# metal-stack v0.22.20
+See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.20](https://github.com/metal-stack/releases/releases/tag/v0.22.20)
+## General
+* [Gardener v1.139](https://github.com/gardener/gardener/releases/tag/v1.139.0)
+* This release was integration tested against the control plane that fully uses Gateway API and without anymore `Ingress` resources. We recommend to migrate to Gateway API for this release.
+## Breaking Changes
+* It is now possible to configure `NoncurrentDays` also via flag, as follow up from #141. The s3 backend can be configured with `NewerNoncurrentVersions` as well as `NoncurrentDays`. Both can be used together, independently or completely removed from the lifecycle rule. The always applied default for `NewerNoncurrentVersions` was removed. So make sure to configure it accordingly, if not already configured in your deployment. (metal-stack/backup-restore-sidecar#148)
+## Required Actions
+* ⚠️ Make sure the seed clusters are updated to at least K8s 1.32 before rolling out this Gardener release. Gardener writes that >= 1.30 seeds are supported but these lower versions cannot be reconciled because the perses-operator CRDs cannot be applied.
+* The monsoon sonic-exporter was superseded and will be removed in a future release. Use gNMI instead.
+  More information about the migration can be found in the gnmic [README](https://github.com/metal-stack/metal-roles/blob/master/partition/roles/monitoring/gnmic/README.md). (metal-stack/metal-roles#670)
+## Noteworthy
+* - We now create a dedicated internal mini-lab docker network (mini_lab_internal) to enable explicit reproducible IP assignments for Service type: LoadBalancer. We reserve the 172.42.0.1/16 subnet for the mini_lab_internal network. mini-lab will manage the lifecycle of this network and will destroy it during `make down`.
+
+  - We made changes to the certificates. If you deployed mini-lab before you need to run `make roll-certs` to update host names in the certificates. (metal-stack/mini-lab#299)
+* In [#633](https://github.com/metal-stack/metal-roles/pull/633) changes were introduced for the s3 backend configuration used by the `backup-restore-sidecar` component. Unfortunately, the defaults for the Ansible variable `*_backup_restore_sidecar_object_max_keep` were removed in the process.
+  So if the corresponding `*_backup_restore_sidecar_object_max_keep` variable for the metal-stack databases (`ipam-db`, `masterdata-db`, `metal-db`) are not explicitly defined in your deployment, the backup lifecycle rule configuration will be modified unexpectedly. So before rolling out metal-stack `v0.22.18` please consider setting those variables explicitly in your deployment. If you want to use the defaults configure e.g. `ipam_db_backup_restore_sidecar_object_max_keep: 480`
+  The defaults will be added back again with metal-roles pull request [#699](https://github.com/metal-stack/metal-roles/pull/633). (metal-stack/metal-roles#699)
+## Component Releases
+### metal-ansible-modules v0.3.2
+* Update v2 modules to latest API. (metal-stack/metal-ansible-modules#26) @Gerrit91
+* Act on latest created resource when using identifier label. (metal-stack/metal-ansible-modules#27) @Gerrit91
+* Use abstract base class to bundle common v2 module behavior + tests (metal-stack/metal-ansible-modules#29) @Gerrit91
+### virtual-garden-kubeconfig-refresher v0.1.6
+* Use STATIC_KUBECONFIG as environment variable name (metal-stack/virtual-garden-kubeconfig-refresher#7) @simcod
+### metal-roles v0.30.0
+* Deploy gardener metrics exporter again (metal-stack/metal-roles#599) @simcod
+* Increase default length of metal-apiserver session secret. (metal-stack/metal-roles#674) @Gerrit91
+* Optional loki deployment (metal-stack/metal-roles#672) @simcod
+* Enable TLS verification by default (metal-stack/metal-roles#677) @simcod
+* fix(alloy): allow setting docker network (metal-stack/metal-roles#676) @ma-hartma
+* Adaptions for g/g v1.139. (metal-stack/metal-roles#682) @Gerrit91
+* sonic-exporter to gnmic migration (metal-stack/metal-roles#670) @Sven-Ric, @Gerrit91
+* feat(monitoring): allow separate ingress annotations for grafana and alertmanager (metal-stack/metal-roles#685) @ma-hartma
+* Update partition-proxy image tag. (metal-stack/metal-roles#686) @Gerrit91
+* Add missing s3 object max keep backup lifecycle defaults (metal-stack/metal-roles#699) @simcod
+* Enable vpn in metal-apiserver (metal-stack/metal-roles#687) @majst01
+* mgmt-server: render ssh_config hosts in stable order (metal-stack/metal-roles#689) @GeertJohan
+* mgmt-server: escape the pubkey in the authorized_keys regexp (metal-stack/metal-roles#690) @GeertJohan
+* Fix handler notify/listen case mismatches (metal-stack/metal-roles#692) @GeertJohan
+### backup-restore-sidecar v0.14.0
+* fix: do not remove redis dump #145 (metal-stack/backup-restore-sidecar#146) @vknabel
+* Replace s3/manager with s3/transfermanager (metal-stack/backup-restore-sidecar#147) @simcod
+* Make NewerNoncurrentVersions optional in lifecycle policy for s3 backend (metal-stack/backup-restore-sidecar#148) @simcod
+### helm-charts v0.7.7
+* Enable TLS verification by default (metal-stack/helm-charts#172) @simcod
+* Enable vpn in metal-apiserver (metal-stack/helm-charts#173) @majst01
+* Modify Postgres pg_stat_statement query (metal-stack/helm-charts#171) @emekaponw, @eberlep
+### metal-apiserver v0.9.1
+* Enable TLS verification by default (metal-stack/metal-apiserver#278) @simcod
+### api v0.4.4
+* Update typescript dependencies (metal-stack/api#169) @majst01
+* Add test interceptor to Python client. (metal-stack/api#170) @Gerrit91
+* Add missing update labels for images. (metal-stack/api#172) @Gerrit91
+### tenant-apiserver v0.1.1
+* Create v7 uuids for resources. (metal-stack/tenant-apiserver#5) @Gerrit91
+### metal-hammer v0.15.2
+* Strict error checking on umount, report back to metal-api (metal-stack/metal-hammer#190) @majst01
+* build with go-hal@add-H13SSH (metal-stack/metal-hammer#184) @mwennrich
+* Fix chrony config of firewalls (metal-stack/metal-hammer#192) @majst01
+### mini-lab v0.7.0
+* feat: add gateway-api support (metal-stack/mini-lab#299) @l0wl3vel
+* Raise Garden cluster K8s version to 1.35. (metal-stack/mini-lab#323) @Gerrit91
+* Disable metal-apiserver TLS verification (metal-stack/mini-lab#319) @simcod
+* Add a make target to export admin editor token (metal-stack/mini-lab#314) @majst01
+* Example for metal-roles override (metal-stack/mini-lab#313) @simcod
+* Fix route reconciliation by enabling fpm (metal-stack/mini-lab#315) @l0wl3vel
+* Latest adaptions for MEP-4. (metal-stack/mini-lab#311) @Gerrit91
+* Export metal-apiserver url (metal-stack/mini-lab#307) @majst01
+### duros-controller v0.12.2
+* Update lb-csi and csi sidecars (metal-stack/duros-controller#102) @majst01
+### gardener-extension-ontap v0.2.21
+* Documentation ontap (metal-stack/gardener-extension-ontap#98) @Honigeintopf
+* Update go dependencies and ci actions (metal-stack/gardener-extension-ontap#99) @majst01
+* provide ontap VolumeSnapshotClass (metal-stack/gardener-extension-ontap#97) @mwennrich
+* use dedicated names for snapshot-controller rbac, to not collide with existing rbac (metal-stack/gardener-extension-ontap#96) @mwennrich
+# Merged Pull Requests
+This is a list of pull requests that were merged since the last release. The list does not contain pull requests from release-vector-repositories.
+
+The fact that these pull requests were merged does not necessarily imply that they have already become part of this metal-stack release.
+
+* Update ubuntu kernel to 6.18.40 (metal-stack/metal-images#431) @majst01
+* Better support for protoyaml (printer and multi-document reader) (metal-stack/metal-lib#210) @Gerrit91
+* Bump releases to version v0.22.19 (metal-stack/website#329) @metal-robot[bot]
+* chore(deps): bump the docusaurus-dependencies group with 4 updates (metal-stack/website#330) @dependabot[bot]
+* chore(deps): bump the other-dependencies group across 1 directory with 4 updates (metal-stack/website#331) @dependabot[bot]
+* Use protoyaml for edit command (metal-stack/metal-lib#212) @Gerrit91
+* Use protoyaml for everything by default and update to latest API (metal-stack/cli#38) @Gerrit91
+* Partition (metal-stack/cli#19) @majst01
+* Update containerd on debian (metal-stack/metal-images#425) @majst01
+* Remove iptables and fever (metal-stack/metal-images#432) @majst01
+* Generate admin docs. (metal-stack/cli#43) @Gerrit91
+* Admin token create (metal-stack/cli#41) @majst01
+* Unify update meta and labels + slight refactorings. (metal-stack/cli#42) @Gerrit91
+* Add gnmic to the release vector (metal-stack/releases#313) @Sven-Ric
+* VPN commands. (metal-stack/cli#44) @Gerrit91
+* Fix empty chrony config if ntpservers is empty (metal-stack/os-installer#9) @majst01
+* Network commands (metal-stack/cli#45) @Gerrit91
+* cleanup completions (metal-stack/cli#46) @majst01
+* Debian kernel 6.12.100 (metal-stack/metal-images#434) @majst01
+* Next release (metal-stack/releases#310) @metal-robot[bot]
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 slug: /release-notes/v0.22.3
 title: v0.22.3
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 # metal-stack v0.22.3
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.3](https://github.com/metal-stack/releases/releases/tag/v0.22.3)

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 # metal-stack v0.22.4
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.4](https://github.com/metal-stack/releases/releases/tag/v0.22.4)

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 slug: /release-notes/v0.22.5
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 # metal-stack v0.22.5
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.5](https://github.com/metal-stack/releases/releases/tag/v0.22.5)

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 slug: /release-notes/v0.22.6
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 # metal-stack v0.22.6
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.6](https://github.com/metal-stack/releases/releases/tag/v0.22.6)

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 slug: /release-notes/v0.22.7
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 # metal-stack v0.22.7
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.7](https://github.com/metal-stack/releases/releases/tag/v0.22.7)

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 slug: /release-notes/v0.22.8
 title: v0.22.8
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 # metal-stack v0.22.8
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.8](https://github.com/metal-stack/releases/releases/tag/v0.22.8)

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 slug: /release-notes/v0.22.9
 title: v0.22.9
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 # metal-stack v0.22.9
 See original release note at [https://github.com/metal-stack/releases/releases/tag/v0.22.9](https://github.com/metal-stack/releases/releases/tag/v0.22.9)