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35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * virt/virtual_machines/virt-edit-vms.adoc
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:_mod-docs-content-type: PROCEDURE
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[id="virt-hot-plugging-memory_{context}"]
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= Hot plugging memory on a virtual machine
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You can add or remove the amount of memory allocated to a virtual machine (VM) without having to restart the VM by using the {product-title} web console.
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.Procedure
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. Navigate to *Virtualization* -> *VirtualMachines*.
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. Select the required VM to open the *VirtualMachine details* page.
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. On the *Configuration* tab, click *Edit CPU|Memory*.
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. Enter the desired amount of memory and click *Save*.
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+
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[NOTE]
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====
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You can hot plug up to three times the default initial amount of memory of the VM. Exceeding this limit requires a restart.
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====
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The system applies these changes immediately. If the VM is migratable, a live migration is triggered. If not, or if the changes cannot be live-updated, a `RestartRequired` condition is added to the VM.
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[NOTE]
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====
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Memory hot plugging for virtual machines requires guest operating system support for the `virtio-mem` driver. This support depends on the driver being included and enabled within the guest operating system, not on specific upstream kernel versions.
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Supported guest operating systems:
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* RHEL 9.4 and later
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* RHEL 8.10 and later (hot-unplug is disabled by default)
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* Other Linux guests require kernel version 5.16 or later and the `virtio-mem` kernel module
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* Windows guests require `virtio-mem` driver version 100.95.104.26200 or later
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==== |