docs/content/admin/enterprise-management/updating-the-virtual-machine-and-physical-resources/increasing-cpu-or-memory-resources.md

title, intro, redirect_from, versions, type, topics

title	intro	redirect_from	versions	type	topics
Increasing CPU or memory resources	You can increase the CPU or memory resources for a {% data variables.product.prodname_ghe_server %} instance.	/enterprise/admin/installation/increasing-cpu-or-memory-resources /enterprise/admin/enterprise-management/increasing-cpu-or-memory-resources /admin/enterprise-management/increasing-cpu-or-memory-resources	enterprise-server *	how_to	Enterprise Infrastructure Performance

{% data reusables.enterprise_installation.warning-on-upgrading-physical-resources %}

Adding CPU or memory resources for AWS

{% note %}

Note: To add CPU or memory resources for AWS, you must be familiar with using either the AWS management console or the aws ec2 command line interface to manage EC2 instances. For background and details on using the AWS tools of your choice to perform the resize, see the AWS documentation on resizing an Amazon EBS-backed instance.

{% endnote %}

Resizing considerations

Before increasing CPU or memory resources for {% data variables.product.product_location %}, review the following recommendations.

• Scale your memory with CPUs. {% data reusables.enterprise_installation.increasing-cpus-req %}
• Assign an Elastic IP address to the instance. If you haven't assigned an Elastic IP to your instance, you'll have to adjust the DNS A records for your {% data variables.product.prodname_ghe_server %} host after the restart to account for the change in public IP address. Once your instance restarts, the instance keeps the Elastic IP if you launched the instance in a virtual private cloud (VPC). If you create the instance in an EC2-Classic network, you must manually reassign the Elastic IP to the instance.

Supported AWS instance types

You need to determine the instance type you would like to upgrade to based on CPU/memory specifications.

{% data reusables.enterprise_installation.warning-on-scaling %}

{% data reusables.enterprise_installation.aws-instance-recommendation %}

Resizing for AWS

{% note %}

Note: For instances launched in EC2-Classic, write down both the Elastic IP address associated with the instance and the instance's ID. Once you restart the instance, re-associate the Elastic IP address.

{% endnote %}

It's not possible to add CPU or memory resources to an existing AWS/EC2 instance. Instead, you must:

1. Stop the instance.
2. Change the instance type.
3. Start the instance. {% data reusables.enterprise_installation.configuration-recognized %}

Adding CPU or memory resources for OpenStack KVM

It's not possible to add CPU or memory resources to an existing OpenStack KVM instance. Instead, you must:

1. Take a snapshot of the current instance.
2. Stop the instance.
3. Select a new instance flavor that has the desired CPU and/or memory resources.

Adding CPU or memory resources for VMware

{% data reusables.enterprise_installation.increasing-cpus-req %}

1. Use the vSphere Client to connect to the VMware ESXi host.
2. Shut down {% data variables.product.product_location %}.
3. Select the virtual machine and click Edit Settings.
4. Under "Hardware", adjust the CPU and/or memory resources allocated to the virtual machine as needed:
5. To start the virtual machine, click OK. {% data reusables.enterprise_installation.configuration-recognized %}