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Merge pull request #17418 from rook/mergify/bp/release-1.20/pr-17417

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docs: update upgrade docs for v1.20 (backport #17417)
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Travis Nielsen authored and GitHub committed 2026-04-23 17:04:45 -06:00
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@@ -14,7 +14,7 @@ We welcome feedback and opening issues!
## Supported Versions
This guide is for upgrading from **Rook v1.18.x to Rook v1.19.x**.
This guide is for upgrading from **Rook v1.19.x to Rook v1.20.x**.
Please refer to the upgrade guides from previous releases for supported upgrade paths.
Rook upgrades are only supported between official releases.
@@ -22,6 +22,7 @@ Rook upgrades are only supported between official releases.
For a guide to upgrade previous versions of Rook, please refer to the version of documentation for
those releases.
* [Upgrade 1.18 to 1.19](https://rook.io/docs/rook/v1.19/Upgrade/rook-upgrade/)
* [Upgrade 1.17 to 1.18](https://rook.io/docs/rook/v1.18/Upgrade/rook-upgrade/)
* [Upgrade 1.16 to 1.17](https://rook.io/docs/rook/v1.17/Upgrade/rook-upgrade/)
* [Upgrade 1.15 to 1.16](https://rook.io/docs/rook/v1.16/Upgrade/rook-upgrade/)
@@ -53,30 +54,9 @@ those releases.
official releases. Builds from the master branch can have functionality changed or removed at any
time without compatibility support and without prior notice.
## Breaking changes in v1.19
## Breaking changes in v1.20
* The minimum supported Kubernetes version is v1.30.
* The minimum supported Ceph version is v19.2.0. Rook v1.18 clusters running Ceph v18 must upgrade
to Ceph v19.2.0 or higher before upgrading Rook.
* The behavior of the `activeStandby` property in the `CephFilesystem` CRD has changed.
When set to `false`, the standby MDS daemon deployment will be scaled down and removed,
rather than only disabling the standby cache while the daemon remains running.
* Helm: The rook-ceph-cluster chart has changed where the Ceph image is defined, to allow separate
settings for the repository and tag. If you deploy with a custom values.yaml:
1. Remove the [cephVersion](https://github.com/rook/rook/blob/release-1.19/deploy/charts/rook-ceph-cluster/values.yaml#L102-L114)
section from the `cephClusterSpec`, to avoid a conflict with the new settings.
2. If desired to override the Ceph image repository or tag, apply the new
[cephImage](https://github.com/rook/rook/blob/master/deploy/charts/rook-ceph-cluster/values.yaml#L88-L102)
settings such as:
```yaml
cephImage:
repository: quay.io/ceph/ceph
tag: v19.2.3
```
* The minimum supported Kubernetes version is v1.31.
## Considerations
@@ -92,11 +72,11 @@ With this upgrade guide, there are a few notes to consider:
Unless otherwise noted due to extenuating requirements, upgrades from one patch release of Rook to
another are as simple as updating the common resources and the image of the Rook operator. For
example, when Rook v1.19.1 is released, the process of updating from v1.19.0 is as simple as running
example, when Rook v1.20.1 is released, the process of updating from v1.20.0 is as simple as running
the following:
```console
git clone --single-branch --depth=1 --branch v1.19.1 https://github.com/rook/rook.git
git clone --single-branch --depth=1 --branch v1.20.1 https://github.com/rook/rook.git
cd rook/deploy/examples
```
@@ -104,11 +84,11 @@ If the Rook Operator or CephCluster are deployed into a different namespace than
`rook-ceph`, see the [Update common resources and CRDs](#1-update-common-resources-and-crds)
section for instructions on how to change the default namespaces in `common.yaml`.
Then, apply the latest changes from v1.19, and update the Rook Operator image.
Then, apply the latest changes from v1.20, and update the Rook Operator image.
```console
kubectl apply -f common.yaml -f crds.yaml -f csi-operator.yaml
kubectl -n rook-ceph set image deploy/rook-ceph-operator rook-ceph-operator=rook/ceph:v1.19.1
kubectl -n rook-ceph set image deploy/rook-ceph-operator rook-ceph-operator=rook/ceph:v1.20.1
```
As exemplified above, it is a good practice to update Rook common resources from the example
@@ -142,9 +122,9 @@ In order to successfully upgrade a Rook cluster, the following prerequisites mus
## Rook Operator Upgrade
The examples given in this guide upgrade a live Rook cluster running `v1.18.8` to
the version `v1.20-beta.0`. This upgrade should work from any official patch release of Rook v1.18 to any
official patch release of v1.19.
The examples given in this guide upgrade a live Rook cluster running `v1.19.4` to
the version `v1.20.0`. This upgrade should work from any official patch release of Rook v1.19 to any
official patch release of v1.20.
Let's get started!
@@ -208,7 +188,7 @@ kubectl apply -f deploy/examples/monitoring/rbac.yaml
!!! hint
The operator is automatically updated when using Helm charts.
The largest portion of the upgrade is triggered when the operator's image is updated to `v1.19.x`.
The largest portion of the upgrade is triggered when the operator's image is updated to `v1.20.x`.
When the operator is updated, it will proceed to update all of the Ceph daemons.
```console
@@ -236,18 +216,18 @@ watch --exec kubectl -n $ROOK_CLUSTER_NAMESPACE get deployments -l rook_cluster=
```
As an example, this cluster is midway through updating the OSDs. When all deployments report `1/1/1`
availability and `rook-version=v1.20-beta.0`, the Ceph cluster's core components are fully updated.
availability and `rook-version=v1.20.0`, the Ceph cluster's core components are fully updated.
```console
Every 2.0s: kubectl -n rook-ceph get deployment -o j...
rook-ceph-mgr-a req/upd/avl: 1/1/1 rook-version=v1.20-beta.0
rook-ceph-mon-a req/upd/avl: 1/1/1 rook-version=v1.20-beta.0
rook-ceph-mon-b req/upd/avl: 1/1/1 rook-version=v1.20-beta.0
rook-ceph-mon-c req/upd/avl: 1/1/1 rook-version=v1.20-beta.0
rook-ceph-osd-0 req/upd/avl: 1// rook-version=v1.20-beta.0
rook-ceph-osd-1 req/upd/avl: 1/1/1 rook-version=v1.18.8
rook-ceph-osd-2 req/upd/avl: 1/1/1 rook-version=v1.18.8
rook-ceph-mgr-a req/upd/avl: 1/1/1 rook-version=v1.20.0
rook-ceph-mon-a req/upd/avl: 1/1/1 rook-version=v1.20.0
rook-ceph-mon-b req/upd/avl: 1/1/1 rook-version=v1.20.0
rook-ceph-mon-c req/upd/avl: 1/1/1 rook-version=v1.20.0
rook-ceph-osd-0 req/upd/avl: 1// rook-version=v1.20.0
rook-ceph-osd-1 req/upd/avl: 1/1/1 rook-version=v1.19.4
rook-ceph-osd-2 req/upd/avl: 1/1/1 rook-version=v1.19.4
```
An easy check to see if the upgrade is totally finished is to check that there is only one
@@ -256,14 +236,14 @@ An easy check to see if the upgrade is totally finished is to check that there i
```console
# kubectl -n $ROOK_CLUSTER_NAMESPACE get deployment -l rook_cluster=$ROOK_CLUSTER_NAMESPACE -o jsonpath='{range .items[*]}{"rook-version="}{.metadata.labels.rook-version}{"\n"}{end}' | sort | uniq
This cluster is not yet finished:
rook-version=v1.18.8
rook-version=v1.20-beta.0
rook-version=v1.19.4
rook-version=v1.20.0
This cluster is finished:
rook-version=v1.20-beta.0
rook-version=v1.20.0
```
### **5. Verify the updated cluster**
At this point, the Rook operator should be running version `rook/ceph:v1.20-beta.0`.
At this point, the Rook operator should be running version `rook/ceph:v1.20.0`.
Verify the CephCluster health using the [health verification doc](health-verification.md).