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4.21.12

PullSpec:

quay.io/openshift-release-dev/ocp-release:4.21.12-multi
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.20.15, 4.20.16, 4.20.17, 4.20.18, 4.20.19, 4.21.0, 4.21.1, 4.21.10, 4.21.11, 4.21.2, 4.21.3, 4.21.4, 4.21.5, 4.21.6, 4.21.7, 4.21.8, 4.21.9

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Changes from 4.22.0-rc.0

Created: 2026-04-23 10:59:57 +0000 UTC

Image Digest: sha256:6faf27248efa5a538019196b8d4953a8fbfa16bd7fb89153a0a8a667b1b0d49c

Release 4.21.12 was created from quay.io/openshift-release-dev/ocp-release-nightly@sha256:880d1947a480af750d38e7e0acbe932b0429403a65b9612c68e9d9d7b54cc0fd

Components

FeatureGate Changes

FeatureGate Default
Hypershift
Default
SelfManagedHA
DevPreviewNoUpgrade
Hypershift
DevPreviewNoUpgrade
SelfManagedHA
OKD
Hypershift
OKD
SelfManagedHA
TechPreviewNoUpgrade
Hypershift
TechPreviewNoUpgrade
SelfManagedHA
AWSEuropeanSovereignCloudInstall
(0 tests)
Unconditionally Enabled
(Changed)
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(Changed)
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(Changed)
Not Available
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(Changed)
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(Changed)
AdditionalStorageConfig
(0 tests)
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(Changed)
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(Changed)
Not Available
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(Changed)
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(Changed)
CRIOCredentialProviderConfig
(0 tests)
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(Changed)
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(Changed)
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ClusterAPIComputeInstall
(0 tests)
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(Changed)
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(Changed)
ClusterAPIControlPlaneInstall
(0 tests)
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(Changed)
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ClusterAPIMachineManagementAWS
(0 tests)
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ClusterAPIMachineManagementAzure
(0 tests)
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(Changed)
ClusterAPIMachineManagementBareMetal
(0 tests)
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Not Available
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(Changed)
ClusterAPIMachineManagementGCP
(0 tests)
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(Changed)
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ClusterAPIMachineManagementOpenStack
(0 tests)
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ClusterAPIMachineManagementPowerVS
(0 tests)
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Not Available
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(Changed)
ClusterUpdateAcceptRisks
(0 tests)
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(Changed)
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(Changed)
Not Available
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(Changed)
ClusterUpdatePreflight
(0 tests)
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(Changed)
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(Changed)
Not Available
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(Changed)
ConfidentialCluster
(0 tests)
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(Changed)
ConfigurablePKI
(0 tests)
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DRAPartitionableDevices
(0 tests)
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(Changed)
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EVPN
(0 tests)
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(Changed)
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(Changed)
Not Available
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ExternalOIDCExternalClaimsSourcing
(0 tests)
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ExternalOIDCWithUpstreamParity
(0 tests)
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GatewayAPIWithoutOLM
(0 tests)
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MachineAPIMigrationAWS
(0 tests)
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MachineAPIMigrationOpenStack
(0 tests)
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(Changed)
Not Available
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(Changed)
MachineAPIMigrationVSphere
(0 tests)
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(Changed)
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(Changed)
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(Changed)
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(Changed)
Not Available
(Changed)
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(Changed)
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(Changed)
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(Changed)
NetworkConnect
(0 tests)
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(Changed)
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(Changed)
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(Changed)
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(Changed)
Not Available
(Changed)
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(Changed)
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(Changed)
NewOLMConfigAPI
(0 tests)
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(Changed)
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(Changed)
Not Available
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NoOverlayMode
(0 tests)
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TLSAdherence
(0 tests)
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(Changed)
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VSphereMultiVCenterDay2
(0 tests)
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(Changed)
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(Changed)
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(Changed)
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(Changed)
Not Available
(Changed)
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(Changed)
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(Changed)
AzureClusterHostedDNSInstall
(0 tests)
Disabled
(Changed)
Disabled
(Changed)
Enabled Enabled Not Available
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Enabled Enabled
BootImageSkewEnforcement
(0 tests)
Disabled
(Changed)
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(Changed)
Enabled Enabled Not Available
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Enabled Enabled
DualReplica
(0 tests)
Disabled
(Changed)
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Enabled Enabled Not Available
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Enabled Enabled
InsightsConfig
(0 tests)
Disabled
(Changed)
Disabled
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Enabled Enabled Not Available
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Enabled Enabled
InsightsOnDemandDataGather
(0 tests)
Disabled
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Disabled
(Changed)
Enabled Enabled Not Available
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Enabled Enabled
ManagedBootImagesCPMS
(0 tests)
Disabled
(Changed)
Disabled
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Enabled Enabled Not Available
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Enabled Enabled
MutableCSINodeAllocatableCount
(0 tests)
Disabled
(Changed)
Disabled
(Changed)
Enabled Enabled Not Available
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Enabled Enabled
VSphereHostVMGroupZonal
(0 tests)
Disabled
(Changed)
Disabled
(Changed)
Enabled Enabled Not Available
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Enabled Enabled
AWSServiceLBNetworkSecurityGroup
(0 tests)
Disabled Disabled
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Enabled Enabled Not Available
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Enabled Enabled
AdditionalRoutingCapabilities
(0 tests)
Enabled
(New)
Enabled
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Enabled
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Enabled
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Enabled
(New)
Enabled
(New)
AdminNetworkPolicy
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
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Enabled
(New)
Enabled
(New)
AlibabaPlatform
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
(Changed)
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Enabled
(New)
Enabled
(New)
CPMSMachineNamePrefix
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
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Enabled
(New)
Enabled
(New)
GCPClusterHostedDNSInstall
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
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Enabled
(New)
Enabled
(New)
GatewayAPI
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
(Changed)
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Enabled
(New)
Enabled
(New)
GatewayAPIController
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
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Not Available
(Changed)
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Enabled
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Enabled
(New)
HighlyAvailableArbiter
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
(Changed)
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Enabled
(New)
Enabled
(New)
ImageVolume
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
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Enabled
(New)
Enabled
(New)
MachineConfigNodes
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
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Enabled
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Enabled
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ManagedBootImages
(0 tests)
Enabled
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Enabled
(New)
Enabled
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Enabled
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Not Available
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Enabled
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Enabled
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ManagedBootImagesAWS
(0 tests)
Enabled
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Enabled
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Enabled
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Enabled
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Enabled
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Enabled
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ManagedBootImagesAzure
(0 tests)
Enabled
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Enabled
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Enabled
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Enabled
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Not Available
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Enabled
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Enabled
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ManagedBootImagesvSphere
(0 tests)
Enabled
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Enabled
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Enabled
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Enabled
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Not Available
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Enabled
(New)
Enabled
(New)
NetworkDiagnosticsConfig
(0 tests)
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Enabled
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Enabled
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Enabled
(New)
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NetworkLiveMigration
(0 tests)
Enabled
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Enabled
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Enabled
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Enabled
(New)
Enabled
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NetworkSegmentation
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
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Enabled
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Enabled
(New)
Enabled
(New)
PinnedImages
(0 tests)
Enabled
(New)
Enabled
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Enabled
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Enabled
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Enabled
(New)
Enabled
(New)
PreconfiguredUDNAddresses
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
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Enabled
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Enabled
(New)
Enabled
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ProcMountType
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
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Enabled
(New)
Enabled
(New)
RouteAdvertisements
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
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Not Available
(Changed)
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Enabled
(New)
Enabled
(New)
VolumeAttributesClass
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Not Available
(Changed)
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Enabled
(New)
Enabled
(New)
ClusterAPIMachineManagementVSphere
(0 tests)
Disabled Disabled Enabled Enabled Not Available
(Changed)
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Disabled
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Disabled
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NewOLMBoxCutterRuntime
(0 tests)
Disabled Disabled Disabled Disabled
(Changed)
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Disabled Disabled
(Changed)
GCPClusterHostedDNS
(0 tests)
Enabled
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Enabled
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Enabled
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TranslateStreamCloseWebsocketRequests
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Enabled
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Enabled
(New)

Removed images

Rebuilt images without code change

agent-installer-api-server

agent-installer-csr-approver, agent-installer-orchestrator

agent-installer-ui

agent-installer-utils

aws-cloud-controller-manager

aws-ebs-csi-driver-operator, azure-disk-csi-driver-operator, azure-file-csi-driver-operator, csi-driver-manila-operator, openstack-cinder-csi-driver-operator

aws-machine-controllers

aws-pod-identity-webhook

azure-cloud-controller-manager, azure-cloud-node-manager

azure-cluster-api-controllers

azure-disk-csi-driver

baremetal-installer, installer, installer-artifacts

baremetal-operator

baremetal-runtimecfg

cli, cli-artifacts, deployer, tools

cloud-credential-operator

cloud-network-config-controller

cluster-authentication-operator

cluster-autoscaler

cluster-baremetal-operator

cluster-capi-controllers

cluster-capi-operator

cluster-config-api

cluster-control-plane-machine-set-operator

cluster-csi-snapshot-controller-operator

cluster-etcd-operator

cluster-ingress-operator

cluster-kube-apiserver-operator

cluster-kube-scheduler-operator

cluster-monitoring-operator

cluster-network-operator

cluster-node-tuning-operator

cluster-olm-operator

cluster-openshift-apiserver-operator

cluster-storage-operator

cluster-version-operator

console

console-operator

docker-builder

driver-toolkit

gcp-cloud-controller-manager

gcp-cluster-api-controllers

gcp-pd-csi-driver

gcp-pd-csi-driver-operator

haproxy-router

hyperkube, kube-proxy, pod

hypershift

ibm-vpc-block-csi-driver

ibmcloud-cluster-api-controllers

ibmcloud-machine-controllers

insights-operator

insights-runtime-exporter, insights-runtime-extractor

ironic

ironic-agent

ironic-machine-os-downloader

keepalived-ipfailover

kube-state-metrics

kubevirt-cloud-controller-manager

kubevirt-csi-driver

machine-api-operator

machine-config-operator

machine-image-customization-controller

monitoring-plugin

multus-cni, multus-cni-microshift

multus-networkpolicy

networking-console-plugin

oauth-apiserver

oauth-proxy

oauth-server

oc-mirror

olm-catalogd, olm-operator-controller

openstack-machine-api-provider

operator-framework-tools, operator-lifecycle-manager, operator-registry

operator-marketplace

ovn-kubernetes, ovn-kubernetes-microshift

powervs-block-csi-driver

powervs-block-csi-driver-operator

prometheus

prometheus-config-reloader, prometheus-operator, prometheus-operator-admission-webhook

rhel-coreos, rhel-coreos-10, rhel-coreos-10-extensions, rhel-coreos-extensions

route-controller-manager

tests

vsphere-csi-driver, vsphere-csi-driver-syncer

vsphere-csi-driver-operator

vsphere-problem-detector


Node Image Info

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Red Hat Enterprise Linux CoreOS (rhel-coreos)

Package List

Full list (569 packages)

Changed:

Removed:

Added:

Extensions

Full list (162 packages)

Red Hat Enterprise Linux CoreOS 10.2 (rhel-coreos-10)

Package List

Full list (481 packages)

Changed:

Extensions

Full list (209 packages)


Red Hat Enterprise Linux CoreOS base layer: 10.2.20260408-0

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Source code for this page located on github