Merge pull request #1902 from redis/DOC-5512

K8s: PVC expansion-RoF limitation

Author: andy-stark-redis

content/operate/kubernetes/re-clusters/auto-tiering.md

@@ -43,6 +43,8 @@ To deploy a Redis Enterprise cluster (REC) with Auto Tiering, you'll need to spe
 
 {{<warning>}}Switching between storage engines (`speedb` and `rocksdb`) requires guidance by Redis Support or your Account Manager.{{</warning>}}
 
+{{<warning>}}PVC expansion is not supported when using Auto Tiering. Do not enable `enablePersistentVolumeResize` in the REC `persistentSpec` if you are using `redisOnFlashSpec` as this will result in conflicts. {{</warning>}}
+
 Here is an example of an REC custom resource with these attributes:
 
 ```YAML

content/operate/kubernetes/re-clusters/expand-pvc.md

@@ -33,6 +33,8 @@ This process involves deleting and recreating the REC StatefulSet with a larger
 
 {{<warning>}} OpenShift users should be aware that (`ClusterResourceQuota`) can limit the PVC expansion. Check your quota before resizing using `oc describe clusterresourcequota <quota-name>`.{{</warning>}}
 
+{{<warning>}} PVC expansion is not supported when using Auto Tiering (Redis on Flash). Do not enable `enablePersistentVolumeResize` if your REC uses `redisOnFlashSpec` as this will result in conflicts. {{</warning>}}
+
 ## Expand REC PVC
 
 1. Enable the REC persistent volume resize flag.

content/operate/kubernetes/release-notes/7-22-0-releases/_index.md

@@ -24,6 +24,8 @@ Redis Enterprise for Kubernetes 7.22.0 includes bug fixes, enhancements, and sup
 
 - **When changing the REDB field `spec.modulesList`, version might be upgraded to latest, even if a different version is specified.** To prevent the upgrade to latest, set  `spec.upgradeSpec.setModuleToLatest` to `false` before upgrading to 7.8.2-6.
 
+- **PVC expansion is not supported when using Redis on Flash (Auto Tiering) (RED-165770)** Do not enable `enablePersistentVolumeResize` if your REC uses `redisOnFlashSpec` as this will result in conflicts.
+
 - **Missing endpoint for admission endpoint (rare) (RED-119469)** Restart the operator pod.
 
 - **The REDB “redisVersion” field can’t be used for memcached databases(RED-119152)**

content/operate/kubernetes/release-notes/7-4-2-releases/7-4-2-12.md

@@ -109,6 +109,8 @@ Any distribution not listed below is not supported for production workloads.
 
 - **Missing endpoint for admission endpoint (rare) (RED-119469)** Restart the operator pod.
 
+- **PVC expansion is not supported when using Redis on Flash (Auto Tiering) (RED-165770)** Do not enable `enablePersistentVolumeResize` if your REC uses `redisOnFlashSpec` as this will result in conflicts.
+
 ### Existing limitations
 
 - **The REDB “redisVersion” field can’t be used for memcached databases(RED-119152)**

content/operate/kubernetes/release-notes/7-4-6-releases/7-4-6-2.md

@@ -102,6 +102,8 @@ Any distribution not listed below is not supported for production workloads.
 
 - **The REDB “redisVersion” field can’t be used for memcached databases(RED-119152)**
 
+- **PVC expansion is not supported when using Redis on Flash (Auto Tiering) (RED-165770)** Do not enable `enablePersistentVolumeResize` if your REC uses `redisOnFlashSpec` as this will result in conflicts.
+
 - **When modifying the database suffix for an Active-Active database, while the service-rigger is in a terminating state, the services-rigger will delete and create the ingress or route resources in a loop (RED-107687)** Wait until the services rigger pod has finished to terminate it.
 
 - **REAADB changes might fail with "gateway timeout" errors, mostly on OpenShift (RED-103048)** Retry the operation.

content/operate/kubernetes/release-notes/7-8-2-releases/7-8-2-6-nov24.md

@@ -114,6 +114,8 @@ Any distribution not listed below is not supported for production workloads.
 
 - **The REDB “redisVersion” field can’t be used for memcached databases(RED-119152)**
 
+- **PVC expansion is not supported when using Redis on Flash (Auto Tiering) (RED-165770)** Do not enable `enablePersistentVolumeResize` if your REC uses `redisOnFlashSpec` as this will result in conflicts.
+
 - **When modifying the database suffix for an Active-Active database, while the service-rigger is in a terminating state, the services-rigger will delete and create the ingress or route resources in a loop (RED-107687)** Wait until the services rigger pod has finished to terminate it.
 
 - **REAADB changes might fail with "gateway timeout" errors, mostly on OpenShift (RED-103048)** Retry the operation.