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articles/openshift/howto-multiple-ips.md

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title: Configure multiple IP addresses for ARO cluster load balancers (Preview)
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title: Configure multiple IP addresses for ARO cluster load balancers
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description: Discover how to configure multiple IP addresses for ARO cluster load balancers.
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author: johnmarco
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ms.author: johnmarc
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ms.service: azure-redhat-openshift
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ms.topic: article
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ms.date: 03/05/2024
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ms.date: 06/26/2024
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#Customer intent: As an ARO SRE, I need to configure multiple outbound IP addresses per ARO cluster load balancers
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# Configure multiple IP addresses per ARO cluster load balancer (Preview)
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# Configure multiple IP addresses per ARO cluster load balancer
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ARO public clusters are created with a public load balancer that's used for outbound connectivity from inside the cluster. By default, one public IP address is configured on that public load balancer, and that limits the maximum node count of your cluster to 62. To be able to scale your cluster to the maximum supported number of nodes, you need to assign multiple additional public IP addresses to the load balancer.
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ARO public clusters are created with a public load balancer that's used for outbound connectivity from inside the cluster. By default, one public IP address is configured on that public load balancer, and that limits the maximum node count of your cluster to 120. To be able to scale your cluster to the maximum supported number of nodes, you need to assign multiple additional public IP addresses to the load balancer.
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You can configure up to 20 IP addresses per cluster. The outbound rules and frontend IP configurations are adjusted to accommodate the number of IP addresses.
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If you have a loadbalancer named `$CLUSTER-public-lb`, the cluster has the older network architecture and can't use the multiple public IP feature.
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### Download ARO extension wheel file (Preview only)
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### Download ARO extension wheel file
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In order to run the commands in this article, you must first download the ARO extension wheel file from [https://aka.ms/az-aroext-latest](https://aka.ms/az-aroext-latest). To install the extension, run the following command:
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articles/openshift/openshift-faq.yml

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ms.author: johnmarc
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ms.service: azure-redhat-openshift
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ms.topic: faq
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ms.date: 06/04/2023
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ms.date: 06/26/2024
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title: Azure Red Hat OpenShift FAQ
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summary: This article answers frequently asked questions (FAQs) about Microsoft Azure Red Hat OpenShift.
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answer: |
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The actual number of supported pods depends on an application’s memory, CPU, and storage requirements.
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Azure Red Hat OpenShift 4.x has a 250 pod-per-node limit and a 60 compute node limit. These limits cap the maximum number of pods supported in a cluster to 250×60 = 15,000. For a private cluster without any public IPs (for example, created by using [User Defined Routing (UDR)](howto-create-private-cluster-4x.md#create-a-private-cluster-without-a-public-ip-address) and running version 4.11 or higher), the limits are 120 compute nodes and 30,000 pods.
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Azure Red Hat OpenShift 4.x has a 250 pod-per-node limit and a 120 compute node limit. These limits cap the maximum number of pods supported in a cluster to 250×120 = 30,000. These limits are the same for clusters created using [User Defined Routing (UDR)](howto-create-private-cluster-4x.md#create-a-private-cluster-without-a-public-ip-address) and running version 4.11 or higher.
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- question: Can a cluster have compute nodes across multiple Azure regions?
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answer: No. All nodes in an Azure Red Hat OpenShift cluster must originate in the same Azure region.

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