1. Open the GCP console and navigate to the Load Balancing menu.
2. Select the load balancer that you want to update.
3. Click on the “Edit” button at the top of the page.
4. Scroll down to the “Frontend configuration” section and click on the “Edit” button next to it.
5. In the “Protocol” drop-down menu, select “HTTPS”.
6. Under “Certificate”, select the SSL certificate that you want to use for the load balancer.
7. In the “Port numbers” section, enter the port numbers that you want to use for HTTPS connections.
8. Click on the “Update” button to save the changes.

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1. Open the Cloud Shell in your GCP console.
2. Run the following command to list all the URL maps in your project:
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   gcloud compute url-maps list
   

3. Identify the URL map that you want to modify and note down its name.
4. Run the following command to update the URL map to accept HTTPS connections:
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   gcloud compute url-maps update [URL_MAP_NAME] --default-service [BACKEND_SERVICE_NAME] --ssl-certificates [SSL_CERTIFICATE_NAME]
   

   Replace [URL_MAP_NAME] with the name of the URL map that you want to update, [BACKEND_SERVICE_NAME] with the name of the backend service that you want to use, and [SSL_CERTIFICATE_NAME] with the name of the SSL certificate that you want to use for HTTPS connections. Note: You can create an SSL certificate using the GCP console or CLI. Refer to the GCP documentation for more information on creating SSL certificates.
5. After running the above command, your URL map will be updated to accept HTTPS connections.

1. Import the necessary libraries:

from google.cloud import compute_v1

2. Define the project ID and the name of the load balancer:

project_id = 'your-project-id'
load_balancer_name = 'your-load-balancer-name'

3. Create a client object for the Compute Engine API:

client = compute_v1.LoadBalancerClient()

4. Get the URL map configuration for the load balancer:

url_map_name = client.get(project=project_id, region='global', load_balancer=load_balancer_name).url_map
url_map = client.get(project=project_id, region='global', url_map=url_map_name)

5. Update the URL map to accept HTTPS connections:

if url_map.host_rules[0].path_matchers[0].default_service.port_name == '80':
    url_map.host_rules[0].path_matchers[0].default_service.port_name = '443'
    url_map.host_rules[0].path_matchers[0].default_service.protocol = 'HTTPS'
    update_mask = ['host_rules.path_matchers.default_service.port_name', 'host_rules.path_matchers.default_service.protocol']
    client.update(project=project_id, region='global', url_map=url_map_name, url_map_resource=url_map, update_mask=update_mask)

6. Verify that the update was successful:

url_map = client.get(project=project_id, region='global', url_map=url_map_name)
if url_map.host_rules[0].path_matchers[0].default_service.port_name == '443' and url_map.host_rules[0].path_matchers[0].default_service.protocol == 'HTTPS':
    print('Load balancer URL map updated successfully.')
else:
    print('Failed to update load balancer URL map.')