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Browse the latest published and updated knowledgebaseCost optimization is not available in operator version `4.4.0` and pods throws error of `found duplicate series for the match group`
* Cost optimization is not available in operator version `4.4.0` and pods throws error of `found duplicate series for the match group` ~~~ 2026-06-03T08:14:01 ERROR metricsconfig_cont...
There is insufficient memory for the Java Runtime Environment to continue
* When starting the Java application (e.g. JBoss) the following error is thrown: ~~~ There is insufficient memory for the Java Runtime Environment to continue.. ~~~
The Kube API Server pods can't rollout to a new revision while a control plane node is not ready, causing authentication issues
* A control plane is in `NotReady` state for too long and can't be brought back at the moment (e.g., waiting for a hardware part), hence causing some issues cluster-wide overtime. * `oc login` ...
OpenShift 4 Hosted Control Plane authentication fails after Active Directory CA certificate or bind password rotation
* Hosted clusters are unable to authenticate after an Active Directory Domain Controller (AD DC) certificate renewal or password change.
Worker nodes unresponsive with high load and 100,000+ threads on high-CPU nodes running Istio and OVN-Kubernetes
* Worker nodes become unresponsive or exhibit extremely high load averages (often exceeding 500), while CPU utilization remains largely "idle" or dominated by system/kernel time. * The tot...
Requesting SOC 3 Report for Red Hat OpenShift Container Platform
* Requesting SOC 3 report for Red Hat OpenShift Container Platform
Cluster becomes unstable after nodes are shut down within 24 hours of installation and restarted in RHOCP 4
* An OpenShift cluster enters an unrecoverable or unstable state if the nodes are powered off within the first 24 hours of cluster creation and kept offline until after that 24-hour window has expir...
Unable to deploy TempoStack instance with Tempo Operator using a custom CA signed S3 storage
- The pods are failing to start while deploying `TempoStack` instance using a custom CA signed S3 storage.
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Solve specific problems that has been raised with Red Hat[Disconnected] Openshift components trying to reach Red Hat public registry in disco...
- In disconnected environment, ocp trigger multiple dns failure alert and most of them are related to Red Hat public registry addresses?
How to change GECOS information of user?
* How to change `GECOS` information of user? * How to rename user loging information? * How to use `chfn` to change the 5th column of /etc/passwd file?
Yum/dnf command returns Error: No handle specified
- Yum/dnf commands got errors: ~~~ [root@test yum.repos.d]# yum --config=rhui-microsoft-azure-rhel8-eus.config install rhui-azure-rhel8-eus Updating Subscription Management repositories. Error: ...
Articles
Technical briefs, reference architectures, and early stages of documentationRed Hat Enterprise Linux Retired Life Cycle Dates
This is an archive of past EUS release schedules for Red Hat Enterprise Linux. For current information and details on each phase, please refer to the current [Red Hat Enterprise Linux Life Cycle](ht...
Uninstalling an OpenShift cluster
Should you need to uninstall an openshift cluster, here are the general instructions for uninstalling a cluster.
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Red Hat Enterprise Linux 10 cheat sheet
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