Merge pull request #83720 from danielclowers/CNV-48412

CNV#48412: devEnableEvictionsInBackground TP docs

Author: agantony

modules/nodes-descheduler-installing.adoc

@@ -58,11 +58,11 @@ endif::[]
 ... To evict pods instead of simulating the evictions, change the *Mode* field to *Automatic*.
 
 ifdef::virt[]
-... Expand the *Profiles* section and select `DevPreviewLongLifecycle`. The `AffinityAndTaints` profile is enabled by default.
+... Expand the *Profiles* section and select `LongLifecycle`. The `AffinityAndTaints` profile is enabled by default.
 +
 [IMPORTANT]
 ====
-The only profile currently available for {VirtProductName} is `DevPreviewLongLifecycle`.
+The only profile currently available for {VirtProductName} is `LongLifecycle`.
 ====
 
 You can also configure the profiles and settings for the descheduler later using the OpenShift CLI (`oc`).

modules/nodes-descheduler-profiles.adoc

@@ -90,7 +90,7 @@ Do not enable `CompactAndScale` with any of the following profiles: `LifecycleAn
 
 endif::nodes[]
 ifdef::virt[]
-Use the Technology Preview `DevPreviewLongLifecycle` profile to enable the descheduler on a virtual machine. This is the only descheduler profile currently available for {VirtProductName}. To ensure proper scheduling, create VMs with CPU and memory requests for the expected load.
+Use the `LongLifecycle` profile to enable the descheduler on a virtual machine. This is the only descheduler profile currently available for {VirtProductName}. To ensure proper scheduling, create VMs with CPU and memory requests for the expected load.
 endif::virt[]
 
 // Show LongLifecycle profile both for virt and nodes

modules/virt-enabling-descheduler-evictions.adoc

@@ -28,7 +28,7 @@ spec:
         descheduler.alpha.kubernetes.io/evict: "true"
 ----
 
-. If you did not already set the `DevPreviewLongLifecycle` profile in the web console during installation, specify the `DevPreviewLongLifecycle` in the `spec.profile` section of the `KubeDescheduler` object:
+. Configure the `KubeDescheduler` object with the `LongLifecycle` profile and enable background evictions for improved VM eviction stability during live migration:
 +
 [source,yaml]
 ----
@@ -40,9 +40,12 @@ metadata:
 spec:
   deschedulingIntervalSeconds: 3600
   profiles:
-  - DevPreviewLongLifecycle
-  mode: Predictive <1>
+  - LongLifecycle <1>
+  mode: Predictive <2>
+  devEnableEvictionsInBackground: true <3>
 ----
-<1> By default, the descheduler does not evict pods. To evict pods, set `mode` to `Automatic`.
+<1> You can only set the `LongLifecycle` profile. This profile balances resource usage between nodes.
+<2> By default, the descheduler does not evict pods. To evict pods, set `mode` to `Automatic`.  
+<3> Enabling `devEnableEvictionsInBackground` allows evictions to occur in the background, improving stability and mitigating oscillatory behavior during live migrations.
 
-The descheduler is now enabled on the VM.
+The descheduler is now enabled on the VM.