From a5eeedfbbd9bd73155ad39d5a431b4047f6f6ae3 Mon Sep 17 00:00:00 2001 From: dfitzmau Date: Thu, 16 Oct 2025 14:23:55 +0100 Subject: [PATCH] OCPBUGS-63196: Added MTU change as DAY-2 note to hcp-virt-prereqs.adoc --- modules/hcp-virt-prereqs.adoc | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/modules/hcp-virt-prereqs.adoc b/modules/hcp-virt-prereqs.adoc index 6f32b1341866..5af2eea1d245 100644 --- a/modules/hcp-virt-prereqs.adoc +++ b/modules/hcp-virt-prereqs.adoc @@ -29,9 +29,17 @@ $ oc patch storageclass ocs-storagecluster-ceph-rbd \ ---- * You have a valid pull secret file for the `quay.io/openshift-release-dev` repository. For more information, see "Install OpenShift on any x86_64 platform with user-provisioned infrastructure". + * You have installed the hosted control plane command-line interface. + * You have configured a load balancer. For more information, see "Configuring MetalLB". + * For optimal network performance, you are using a network maximum transmission unit (MTU) of 9000 or greater on the {product-title} cluster that hosts the KubeVirt virtual machines. If you use a lower MTU setting, network latency and the throughput of the hosted pods are affected. Enable multiqueue on node pools only when the MTU is 9000 or greater. ++ +[IMPORTANT] +==== +You cannot change the MTU value for your cluster as a postinstallation task. +==== * The {mce-short} has at least one managed {product-title} cluster. The `local-cluster` is automatically imported. For more information about the `local-cluster`, see "Advanced configuration" in the {mce-short} documentation. You can check the status of your hub cluster by running the following command: +