Cloud CDN Regional Backend Services Should Have Connection Draining

More Info:

Cloud CDN should not send any new requests to the unhealthy instance if an compute instance fails health checks

Risk Level

Medium

Address

Reliability, Security

Compliance Standards

CBP

Triage and Remediation

Remediation

Using Console

Using CLI

To remediate the misconfiguration of Cloud CDN Regional Backend Services not having connection draining on GCP using GCP CLI, follow the below steps:

Open the Google Cloud Console and go to the Cloud Shell.
Run the following command to list all the backend services in your project:

gcloud compute backend-services list

Choose the backend service that you want to update and run the following command to describe the backend service:

gcloud compute backend-services describe [BACKEND_SERVICE_NAME] --region [REGION]

Check if the connection draining configuration is set for the backend service. If not, add the connection draining configuration by running the following command:

gcloud compute backend-services update [BACKEND_SERVICE_NAME] --region [REGION] --connection-draining-timeout [TIMEOUT_SECONDS]

Replace [BACKEND_SERVICE_NAME] with the name of the backend service you want to update, [REGION] with the region where the backend service is located, and [TIMEOUT_SECONDS] with the number of seconds that you want to set for the connection draining timeout.For example, to set the connection draining timeout to 60 seconds for a backend service named “my-backend-service” located in the “us-central1” region, run the following command:

gcloud compute backend-services update my-backend-service --region us-central1 --connection-draining-timeout 60

Verify that the connection draining configuration is set for the backend service by running the following command:

gcloud compute backend-services describe [BACKEND_SERVICE_NAME] --region [REGION]

Make sure that the “connectionDraining” field shows the correct value for the connection draining configuration.By following these steps, you can remediate the misconfiguration of Cloud CDN Regional Backend Services not having connection draining on GCP using GCP CLI.

Using Python

To remediate the misconfiguration of Cloud CDN Regional Backend Services not having connection draining in GCP using Python, you can follow the below steps:

Install the necessary Python libraries:

pip install google-cloud-cdn
pip install google-auth google-auth-oauthlib google-auth-httplib2

Set up authentication:

from google.oauth2 import service_account
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials

creds = None
creds = service_account.Credentials.from_service_account_file(
        'path/to/service_account.json')
creds = creds.with_scopes(
        ['https://www.googleapis.com/auth/cloud-platform'])
creds = creds.with_subject('[email protected]')

Retrieve the list of backend services:

from google.cloud import cdn_v1beta1

client = cdn_v1beta1.CloudCDNClient(credentials=creds)
project_number = '1234567890'
location = 'us-central1'
parent = f'projects/{project_number}/locations/{location}'

backend_services = client.list_backend_services(parent=parent)

For each backend service, check if connection draining is enabled:

for backend_service in backend_services:
    backend_service_name = backend_service.name
    backend_service = client.get_backend_service(name=backend_service_name)
    if backend_service.connection_draining.draining_timeout_sec == 0:
        print(f'Connection draining is not enabled for backend service {backend_service_name}')

If connection draining is not enabled, update the backend service to enable it:

for backend_service in backend_services:
    backend_service_name = backend_service.name
    backend_service = client.get_backend_service(name=backend_service_name)
    if backend_service.connection_draining.draining_timeout_sec == 0:
        backend_service.connection_draining.draining_timeout_sec = 300
        update_mask = {'paths': ['connection_draining']}
        client.update_backend_service(backend_service=backend_service, update_mask=update_mask)
        print(f'Connection draining has been enabled for backend service {backend_service_name}')

By following these steps, you can remediate the misconfiguration of Cloud CDN Regional Backend Services not having connection draining in GCP using Python.

Additional Reading:

https://cloud.google.com/load-balancing/docs/enabling-connection-draining

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GCP Threats

Cloud CDN Regional Backend Services Should Have Connection Draining

More Info:

Risk Level

Address

Compliance Standards

Triage and Remediation

Remediation

Additional Reading:

GCP Introduction

GCP Pricing

GCP Threats

GCP Misconfigurations

Resources

GCP Threats

​More Info:

​Risk Level

​Address

​Compliance Standards

​Triage and Remediation

​Remediation

​Additional Reading:

More Info:

Risk Level

Address

Compliance Standards

Triage and Remediation

Remediation

Additional Reading: