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42 lines
2.2 KiB
Plaintext
42 lines
2.2 KiB
Plaintext
// Module included in the following assemblies:
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// * edge_computing/image-based-install/ibi-understanding-image-based-install.adoc
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:_mod-docs-content-type: CONCEPT
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[id="ibi-image-based-install-cluster-guide_{context}"]
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= Cluster guidelines for image-based installation and deployment
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For a successful image-based installation and deployment, see the following guidelines.
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[id="ibi-cluster-guidelines_{context}"]
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== Cluster guidelines
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* If you are using {rh-rhacm-first}, to avoid including any {rh-rhacm} resources in your seed image, you need to disable all optional {rh-rhacm} add-ons before generating the seed image.
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[id="ibi-seed-cluster-guidelines_{context}"]
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== Seed cluster guidelines
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* If your cluster deployment at the edge of the network requires a proxy configuration, you must create a seed image from a seed cluster featuring a proxy configuration. The proxy configurations do not have to match.
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* The `clusterNetwork` and `serviceNetwork` network configurations in the seed cluster persist to the deployed cluster. The Lifecycle Agent embeds these settings in the seed image. You cannot change these settings later in the image-based installation and deployment process.
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* If you set a maximum transmission unit (MTU) in the seed cluster, you must set the same MTU value in the static network configuration for the image-based configuration ISO.
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* Your {sno} seed cluster must have a shared `/var/lib/containers` directory for precaching images during an image-based installation. For more information see "Configuring a shared container partition between ostree stateroots".
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* Create a seed image from a {sno} cluster that uses the same hardware as your target bare-metal host. The seed cluster must reflect your target cluster configuration for the following items:
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** CPU topology
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*** CPU architecture
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*** Number of CPU cores
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*** Tuned performance configuration, such as number of reserved CPUs
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** IP version configuration, either IPv4, IPv6, or dual-stack networking
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** Disconnected registry
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+
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[NOTE]
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====
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If the target cluster uses a disconnected registry, your seed cluster must use a disconnected registry. The registries do not have to be the same.
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====
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** FIPS configuration |