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Copy file name to clipboardExpand all lines: architecture/mce-overview-ocp.adoc
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:_mod-docs-content-type: ASSEMBLY
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[id="mce-overview-ocp"]
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include::_attributes/common-attributes.adoc[]
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= About multicluster engine for Kubernetes operator
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= About the {mce}
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:context: mce-overview-ocp
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toc::[]
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One of the challenges of scaling Kubernetes environments is managing the lifecycle of a growing fleet. To meet that challenge, you can use the multicluster engine for Kubernetes operator. The operator delivers full lifecycle capabilities for managed {product-title} clusters and partial lifecycle management for other Kubernetes distributions. It is available in two ways:
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One of the challenges of scaling Kubernetes environments is managing the lifecycle of a growing fleet. To meet that challenge, you can use the {mce-short}. The operator delivers full lifecycle capabilities for managed {product-title} clusters and partial lifecycle management for other Kubernetes distributions. It is available in two ways:
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* As a standalone operator that you install as part of your {product-title} or {oke} subscription
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* As part of link:https://access.redhat.com/products/red-hat-advanced-cluster-management-for-kubernetes[Red Hat Advanced Cluster Management for Kubernetes]
The multicluster engine for Kubernetes operator can manage one or more {product-title} clusters. After you create a hosted cluster on {product-title}, you must import your hosted cluster in the multicluster engine operator as a managed cluster. Then, you can use the {product-title} cluster as a management cluster.
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The {mce}can manage one or more {product-title} clusters. After you create a hosted cluster on {product-title}, you must import your hosted cluster in the {mce-short} as a managed cluster. Then, you can use the {product-title} cluster as a management cluster.
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Consider the following requirements before you start updating {hcp}:
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* You must use the bare metal platform for an {product-title} cluster when using {VirtProductName} as a provider.
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* You must use bare metal or {VirtProductName} as the cloud platform for the hosted cluster. You can find the platform type of your hosted cluster in the `spec.Platform.type` specification of the `HostedCluster` custom resource (CR).
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You must upgrade the {product-title} cluster, multicluster engine for Kubernetes operator, hosted cluster, and node pools by completing the following tasks:
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You must upgrade the {product-title} cluster, {mce-short}, hosted cluster, and node pools by completing the following tasks:
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. Upgrade an {product-title} cluster to the latest version. For more information, see "Updating a cluster using the web console" or "Updating a cluster using the CLI".
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. Upgrade the multicluster engine for Kubernetes operator to the latest version. For more information, see "Updating installed Operators".
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. Upgrade the {mce-short} to the latest version. For more information, see "Updating installed Operators".
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. Upgrade the hosted cluster and node pools from the previous {product-title} version to the latest version. For more information, see "Updating the hosted cluster for {hcp}" and "Updating node pools for {hcp}".
Copy file name to clipboardExpand all lines: modules/hosted-control-planes-concepts-personas.adoc
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hosting cluster:: See _management cluster_.
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managed cluster:: A cluster that the hub cluster manages. This term is specific to the cluster lifecycle that the multicluster engine for Kubernetes operator manages in Red Hat Advanced Cluster Management. A managed cluster is not the same thing as a _management cluster_. For more information, see link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html/about/welcome-to-red-hat-advanced-cluster-management-for-kubernetes#managed-cluster[Managed cluster].
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managed cluster:: A cluster that the hub cluster manages. This term is specific to the cluster lifecycle that the {mce} manages in Red Hat Advanced Cluster Management. A managed cluster is not the same thing as a _management cluster_. For more information, see link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html/about/welcome-to-red-hat-advanced-cluster-management-for-kubernetes#managed-cluster[Managed cluster].
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management cluster:: An {product-title} cluster where the HyperShift Operator is deployed and where the control planes for hosted clusters are hosted. The management cluster is synonymous with the _hosting cluster_.
Copy file name to clipboardExpand all lines: modules/hosted-control-planes-overview.adoc
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You can use {hcp} for Red Hat {product-title} to reduce management costs, optimize cluster deployment time, and separate management and workload concerns so that you can focus on your applications.
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{hcp-capital} is available by using the link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html/clusters/cluster_mce_overview#cluster_mce_overview[multicluster engine for Kubernetes operator version 2.0 or later] on the following platforms:
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{hcp-capital} is available by using the link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html/clusters/cluster_mce_overview#cluster_mce_overview[{mce} version 2.0 or later] on the following platforms:
= Preparing an Agent-based cluster deployment for the multicluster engine for Kubernetes operator while connected
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= Preparing an Agent-based cluster deployment for the {mce} while connected
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Create the required manifests for the multicluster engine for Kubernetes operator, the Local Storage Operator (LSO), and to deploy an agent-based {product-title} cluster as a hub cluster.
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Create the required manifests for the {mce-short}, the Local Storage Operator (LSO), and to deploy an agent-based {product-title} cluster as a hub cluster.
= Preparing an Agent-based cluster deployment for the multicluster engine for Kubernetes operator while disconnected
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= Preparing an Agent-based cluster deployment for the {mce} while disconnected
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You can mirror the required {product-title} container images, the multicluster engine for Kubernetes operator, and the Local Storage Operator (LSO) into your local mirror registry in a disconnected environment.
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You can mirror the required {product-title} container images, the {mce-short}, and the Local Storage Operator (LSO) into your local mirror registry in a disconnected environment.
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Ensure that you note the local DNS hostname and port of your mirror registry.
Copy file name to clipboardExpand all lines: modules/ztp-precaching-downloading-artifacts.adoc
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[id="ztp-preparing-ocp-images_{context}"]
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== Preparing to download the {product-title} images
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To download {product-title} container images, you need to know the multicluster engine (MCE) version. When you use the `--du-profile` flag, you also need to specify the {rh-rhacm-first} version running in the hub cluster that is going to provision the {sno}.
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To download {product-title} container images, you need to know the multicluster engine version. When you use the `--du-profile` flag, you also need to specify the {rh-rhacm-first} version running in the hub cluster that is going to provision the {sno}.
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.Prerequisites
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* You have {rh-rhacm} and MCE installed.
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* You have {rh-rhacm} and the {mce-short} installed.
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* You partitioned the storage device.
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* You have enough space for the images on the partitioned device.
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* You connected the bare-metal server to the Internet.
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* You have a valid pull secret.
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.Procedure
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. Check the {rh-rhacm} and MCE version by running the following commands in the hub cluster:
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. Check the {rh-rhacm} version and the multicluster engine version by running the following commands in the hub cluster:
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[source,terminal]
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----
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<1> Specifies the downloading function of the {factory-prestaging-tool}.
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<2> Defines the {product-title} release version.
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<3> Defines the {rh-rhacm} version.
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<4> Defines the MCE version.
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<4> Defines the multicluster engine version.
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<5> Defines the folder where you want to download the images on the disk.
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<6> Optional. Defines the repository where you store your additional images. These images are downloaded and pre-cached on the disk.
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[IMPORTANT]
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====
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You need to include the {rh-rhacm} hub and MCE Operator versions by using the `--acm-version` and `--mce-version` flags so the {factory-prestaging-tool} can pre-cache the appropriate containers images for the {rh-rhacm} and MCE Operators.
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You need to include the {rh-rhacm} hub and {mce-short} versions by using the `--acm-version` and `--mce-version` flags so the {factory-prestaging-tool} can pre-cache the appropriate containers images for {rh-rhacm} and the {mce-short}.
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====
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.Procedure
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<1> Specifies the downloading function of the {factory-prestaging-tool}.
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<2> Defines the {product-title} release version.
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<3> Defines the {rh-rhacm} version.
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<4> Defines the MCE version.
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<4> Defines the multicluster engine version.
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<5> Defines the folder where you want to download the images on the disk.
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<6> Optional. Defines the repository where you store your additional images. These images are downloaded and pre-cached on the disk.
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<7> Specifies pre-caching the Operators included in the DU configuration.
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<1> Specifies the downloading function of the {factory-prestaging-tool}.
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<2> Defines the {product-title} release version.
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<3> Defines the {rh-rhacm} version.
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<4> Defines the MCE version.
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<4> Defines the multicluster engine version.
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<5> Defines the folder where you want to download the images on the disk.
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<6> Optional. Defines the repository where you store your additional images. These images are downloaded and pre-cached on the disk.
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<7> Specifies pre-caching the Operators included in the DU configuration.
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- name: 'stable'
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----
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<1> The platform versions match the versions passed to the tool.
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<2> The versions of {rh-rhacm} and MCE Operators match the versions passed to the tool.
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<2> The versions of {rh-rhacm} and the {mce-short} match the versions passed to the tool.
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<3> The CR contains all the specified DU Operators.
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