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Merge pull request #29686 from codyhoag/kn-rn-4-7

Urgent known issue for OCP 4.7
This commit is contained in:
Cody Hoag
2021-02-23 13:31:51 -05:00
committed by GitHub

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@@ -2025,6 +2025,15 @@ This script removes unauthenticated subjects from the following cluster role bin
* If you are running cluster monitoring with an attached PVC for Prometheus, you might experience OOM kills during upgrade to {product-title} 4.7. When persistent storage is in use for Prometheus, Prometheus memory usage doubles during cluster upgrade and for several hours after upgrade is complete. To avoid the OOM kill issue, allow worker nodes with double the size of memory that was available prior to the upgrade. (link:https://bugzilla.redhat.com/show_bug.cgi?id=1925061[*BZ#1925061*])
* Starting and stopping pods rapidly can result in pods getting stuck in the `Terminating` state. As a workaround, you must remove the stuck pod by running the following command:
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[source,terminal]
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$ oc delete --force -n <project_name> <pod_name>
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This issue will be fixed in a future release of {product-title}. (link:https://bugzilla.redhat.com/show_bug.cgi?id=1929463[*BZ#1929463*])
* {op-system} real time (RT) kernels are currently only supported on compute nodes, not control plane nodes. Compact clusters are not supported with RT kernels in {product-title} 4.7. (link:https://bugzilla.redhat.com/show_bug.cgi?id=1887007[*BZ#1887007*])
* It is currently not possible to use the AWS Secure Token Service (STS), which is a Technology Preview feature, in a cluster installed into the AWS C2S Secret Region due to current {product-title} limitations. This will be fixed in a future release of {product-title}. (link:https://bugzilla.redhat.com/show_bug.cgi?id=1927157[*BZ#1927157*])