#  Creating a filtering node instance template on GCP

A filtering node instance template will be used later as the base when creating a managed instance group. To create a filtering node instance template, perform the following:

1.  Navigate to the **Instance templates** page in the **Compute Engine** section of the menu and click the **Create instance template** button.
    
    ![Creating an instance template](https://docs.wallarm.com/images/installation-gcp/auto-scaling/common/autoscaling-group-guide/create-instance-template.png)
    
2.  Enter the template name into the **Name** field.
3.  Select the virtual machine type to be used to launch a virtual machine with the filtering node on from the **Machine type** field. 

    !!! warning "Select the proper instance type"
        Select the same instance type that you used when you initially configured the filtering node (or a more powerful one).
        
        Using a less powerful instance type may lead to issues in filtering node operation.

4.  Click the **Change** button in the **Boot disk** setting. In the window that appears, navigate to the **Custom images** tab and select the name of the project where you created your virtual machine image from the **Show images from** drop-down list. Select the [previously created image](https://docs.wallarm.com/admin-en/installation-guides/google-cloud/create-image.md) from the list of available images of the project and click the **Select** button.

    ![Selecting an image](https://docs.wallarm.com/images/installation-gcp/auto-scaling/common/autoscaling-group-guide/select-image.png)
    
5.  For the instances based on the template to be identical to the basic instance, configure all of the remaining parameters in the same way as you configured the parameters when [creating your base instance](https://docs.wallarm.com/admin-en/installation-guides/google-cloud/create-image.md).
    
    !!! info "Configuring the firewall"
        Make sure that the firewall does not block HTTP traffic to the created template. To enable HTTP traffic, select the **Allow HTTP traffic** checkbox.
    
    !!! info "Connecting to the instance via a custom private key"
        If during base instance creation process you have enabled connection to the instance via a custom SSH key pair, make sure you have access to the private key from this key pair.
6.  Click the **Create** button and wait until the template creation process is finished. 

After creating the instance template, you can proceed with the [creation of a managed instance group](https://docs.wallarm.com/admin-en/installation-guides/google-cloud/creating-autoscaling-group.md) with enabled auto scaling.