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Copy file name to clipboardExpand all lines: modules/nw-nodeport-service-range-edit.adoc
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[id="nw-nodeport-service-range-edit_{context}"]
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= Expanding the node port range
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You can expand the node port range for your cluster. However, after you install your {product-title} cluster, you cannot contract the node port range on either side.
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You can only expand the node port range for your cluster. After you install your {product-title} cluster, you cannot shrink the node port range on either side of the currently configured range.
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[IMPORTANT]
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====
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Before you expand a node port range, consider that Red{nbsp}Hat has not performed testing outside the default port range of `30000-32768`. For ranges outside the default port range, ensure that you test to verify the expanding node port range does not impact your cluster. If you expanded the range and a port allocation issue occurs, create a new cluster and set the required range for it.
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Red{nbsp}Hat has not performed testing outside the default port range of `30000-32768`. For ranges outside the default port range, ensure that you test to verify that expanding your node port range does not impact your cluster. If you expanded the range and a port allocation issue occurs, create a new cluster and set the required range for it.
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====
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.Prerequisites
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.Procedure
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* Expand the range for the `serviceNodePortRange` parameter in the `network.config.openshift.io` object that your cluster uses to manage traffic for pods by entering the following command in your command-line interface (CLI):
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* To expand the range for the `serviceNodePortRange` parameter in the `network.config.openshift.io` object that your cluster uses to manage traffic for pods, enter the following command:
Copy file name to clipboardExpand all lines: networking/configuring_network_settings/configuring-node-port-service-range.adoc
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During cluster installation, you can configure the node port range to meet the requirements of your cluster. After cluster installation, only a cluster administrator can expand the range as a postinstallation task. If your cluster uses a large number of node ports, consider increasing the available port range according to the requirements of your cluster.
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[IMPORTANT]
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====
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Before you expand a node port range, consider that Red{nbsp}Hat has not performed testing outside the default port range of `30000-32768`. For ranges outside the default port range, ensure that you test to verify the expanding node port range does not impact your cluster. If you expanded the range and a port allocation issue occurs, create a new cluster and set the required range for it.
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====
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If you do not set a node port range during cluster installation, the default range of `30000-32768` applies to your cluster. In this situation, you can expand the range on either side, but you must preserve `30000-32768` within your new port range.
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[IMPORTANT]
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====
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If you expand the node port range and {oc-first} stops working because of a port conflict with the OpenShift API server, you must create a new cluster.
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Ensure that the new node port range does not overlap with any ports already in use by host processes or pods that are configured with host networking.
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Red{nbsp}Hat has not performed testing outside the default port range of `30000-32768`. For ranges outside the default port range, ensure that you test to verify the expanding node port range does not impact your cluster. In particular, ensure that there is:
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- No overlap with any ports already in use by host processes
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- No overlap with any ports already in use by pods that are configured with host networking
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If you expanded the range and a port allocation issue occurs, create a new cluster and set the required range for it.
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If you expand the node port range and {oc-first} stops working because of a port conflict with the {product-title} API server, you must create a new cluster.
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