:_mod-docs-content-type: ASSEMBLY
[id="cluster-operators-ref"]
= Cluster Operators reference
include::_attributes/common-attributes.adoc[]
:context: cluster-operators-ref

toc::[]

This reference guide indexes the _cluster Operators_ shipped by Red Hat that serve as the architectural foundation for {product-title}. Cluster Operators are installed by default, unless otherwise noted, and are managed by the Cluster Version Operator (CVO). For more details on the control plane architecture, see xref:../architecture/control-plane.adoc#operators-overview_control-plane[Operators in {product-title}].

Cluster administrators can view cluster Operators in the {product-title} web console from the *Administration* -> *Cluster Settings* page.

[NOTE]
====
Cluster Operators are not managed by Operator Lifecycle Manager (OLM) and OperatorHub. OLM and OperatorHub are part of the link:https://operatorframework.io/[Operator Framework] used in {product-title} for installing and running optional xref:../architecture/control-plane.adoc#olm-operators_control-plane[add-on Operators].
====

Some of the following cluster Operators can be disabled prior to installation. For more information see xref:../installing/overview/cluster-capabilities.adoc#cluster-capabilities[cluster capabilities].

include::modules/cluster-bare-metal-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#cluster-bare-metal-operator_cluster-capabilities[Bare-metal capability]

include::modules/cloud-credential-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
[discrete]
[id="additional-resources_cluster-op-ref-cco"]
=== Additional resources
* xref:../authentication/managing_cloud_provider_credentials/about-cloud-credential-operator.adoc#about-cloud-credential-operator[About the Cloud Credential Operator]
* xref:../rest_api/security_apis/credentialsrequest-cloudcredential-openshift-io-v1.adoc#credentialsrequest-cloudcredential-openshift-io-v1[`CredentialsRequest` custom resource]

include::modules/cluster-authentication-operator.adoc[leveloffset=+1]

include::modules/cluster-autoscaler-operator.adoc[leveloffset=+1]

include::modules/cluster-cloud-controller-manager-operator.adoc[leveloffset=+1]

include::modules/cluster-capi-operator.adoc[leveloffset=+1]

include::modules/cluster-config-operator.adoc[leveloffset=+1]

include::modules/cluster-csi-snapshot-controller-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#cluster-csi-snapshot-controller-operator_cluster-capabilities[CSI snapshot controller capability]

include::modules/cluster-image-registry-operator.adoc[leveloffset=+1]

include::modules/cluster-machine-approver-operator.adoc[leveloffset=+1]

include::modules/cluster-monitoring-operator.adoc[leveloffset=+1]

include::modules/cluster-network-operator.adoc[leveloffset=+1]

include::modules/cluster-samples-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources

* xref:../installing/overview/cluster-capabilities.adoc#cluster-samples-operator_cluster-capabilities[OpenShift samples capability]

include::modules/cluster-storage-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#cluster-storage-operator_cluster-capabilities[Storage capability]

include::modules/cluster-version-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../updating/understanding_updates/intro-to-updates.adoc#understanding-clusterversion-conditiontypes_understanding-openshift-updates[Understanding cluster version condition types]

include::modules/console-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#console-operator_cluster-capabilities[Web console capability]

include::modules/control-plane-machine-set-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
[discrete]
[id="additional-resources_cluster-op-ref-cpmso"]
=== Additional resources

* xref:../machine_management/control_plane_machine_management/cpmso-about.adoc#cpmso-about[About control plane machine sets]
* xref:../rest_api/machine_apis/controlplanemachineset-machine-openshift-io-v1.adoc#controlplanemachineset-machine-openshift-io-v1[`ControlPlaneMachineSet` custom resource]

include::modules/cluster-dns-operator.adoc[leveloffset=+1]

include::modules/etcd-operator.adoc[leveloffset=+1]

include::modules/ingress-operator.adoc[leveloffset=+1]

include::modules/insights-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#insights-operator_cluster-capabilities[Insights capability]
* xref:../support/remote_health_monitoring/about-remote-health-monitoring.adoc#about-remote-health-monitoring[About remote health monitoring]

include::modules/kube-apiserver-operator.adoc[leveloffset=+1]

include::modules/kube-controller-manager-operator.adoc[leveloffset=+1]

include::modules/cluster-kube-scheduler-operator.adoc[leveloffset=+1]

include::modules/cluster-kube-storage-version-migrator-operator.adoc[leveloffset=+1]

include::modules/machine-api-operator.adoc[leveloffset=+1]

include::modules/machine-config-operator.adoc[leveloffset=+1]

include::modules/operator-marketplace.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/overview/cluster-capabilities.adoc#marketplace-operator_cluster-capabilities[Marketplace capability]

include::modules/node-tuning-operator.adoc[leveloffset=+1]

[discrete]
[role="_additional-resources"]
[id="cluster-operators-ref-nto-addtl-resources"]
=== Additional resources
* xref:../scalability_and_performance/low_latency_tuning/cnf-understanding-low-latency.adoc#cnf-understanding-low-latency_cnf-understanding-low-latency[About low latency]

include::modules/openshift-apiserver-operator.adoc[leveloffset=+1]

include::modules/cluster-openshift-controller-manager-operators.adoc[leveloffset=+1]

[id="cluster-operators-ref-olm"]
== Operator Lifecycle Manager (OLM) Operators

[NOTE]
====
The following sections pertain to the {olmv0-first} that has been included with {product-title} 4 since its initial release. For {olmv1}, see xref:../operators/operator-reference.adoc#cluster-operators-ref-olmv1_cluster-operators-ref[{olmv1-first} Operators].
====

[discrete]
include::modules/olm-overview.adoc[leveloffset=+2]
[discrete]
include::modules/olm-arch-olm-operator.adoc[leveloffset=+2]
[discrete]
include::modules/olm-arch-catalog-operator.adoc[leveloffset=+2]
[discrete]
include::modules/olm-arch-catalog-registry.adoc[leveloffset=+2]
[discrete]
include::modules/olm-architecture.adoc[leveloffset=+2]

[discrete]
=== Cluster Operators

In {product-title}, OLM functionality is provided across a set of cluster Operators:

`operator-lifecycle-manager`:: Provides the OLM Operator. Also informs cluster administrators if there are any installed Operators blocking cluster upgrade, based on their `olm.maxOpenShiftVersion` properties. For more information, see "Controlling Operator compatibility with {product-title} versions".
`operator-lifecycle-manager-catalog`:: Provides the Catalog Operator.
`operator-lifecycle-manager-packageserver`:: Represents an API extension server responsible for collecting metadata from all catalogs on the cluster and serves the user-facing `PackageManifest` API.

[role="_additional-resources"]
[discrete]
[id="cluster-operators-ref-olm-addtl-resources"]
=== Additional resources
* xref:../operators/understanding/olm/olm-understanding-olm.adoc#olm-understanding-olm[Understanding Operator Lifecycle Manager (OLM)]
* xref:../operators/operator_sdk/osdk-working-bundle-images.adoc#osdk-control-compat_osdk-working-bundle-images[Controlling Operator compatibility with {product-title} versions]

include::modules/olmv1-clusteroperator.adoc[leveloffset=+1]

[role="_additional-resources"]
[discrete]
[id="cluster-operators-ref-olmv1-addtl-resources"]
=== Additional resources
* xref:../extensions/index.adoc#extensions-overview[Extensions overview]
* xref:../extensions/ce/update-paths.adoc#olmv1-ocp-compat_update-paths[Compatibility with {product-title} versions]

include::modules/openshift-service-ca-operator.adoc[leveloffset=+1]

include::modules/vsphere-problem-detector-operator.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources
* xref:../installing/installing_vsphere/using-vsphere-problem-detector-operator.adoc#using-vsphere-problem-detector-operator[Using the vSphere Problem Detector Operator]
