Google Professional Cloud Network Engineer Question 32
Select 3Google Cloud PlatformYou are tasked with deploying a Google Kubernetes Engine (GKE) cluster for a rapidly growing application. The application requires a large number of pods and services and needs to scale significantly in the future. To ensure the scalability of the cluster, you must carefully plan the IP address allocation. Which of the following steps should you take to properly configure the IP address space for your GKE cluster?
- A
Configure a secondary IP range for pods and services in the VPC subnet.
- B
Use a /28 subnet for the cluster to conserve IP address space.
- C
Ensure that the secondary IP ranges have sufficient size to support the maximum number of pods and services.
- D
Enable private Google access to allow pods to communicate with the GKE control plane securely.
- E
Use the default IP ranges for the cluster without customization to simplify the setup.
Show answer and explanation
Correct answers: A, C, D
Explanation
Proper planning for IP address allocation in GKE is critical for ensuring scalability and functionality. Configuring secondary IP ranges allows for efficient IP address management for pods and services using VPC-native routing. Allocating sufficiently large IP ranges prevents IP exhaustion during scaling. Additionally, enabling private Google access enhances security by allowing pods to communicate with the GKE control plane securely. Avoid using overly small subnets or relying on default IP ranges without customization, as these can hinder scalability.
- A. Correct.
Correct: GKE requires secondary ranges in the VPC subnet for assigning IP addresses to pods and services. This configuration is necessary for clusters using VPC-native routing.
- B. Incorrect.
Incorrect: A /28 subnet provides extremely limited IP addresses, which is insufficient for scaling a cluster with numerous pods and services.
- C. Correct.
Correct: Planning secondary IP ranges with sufficient space is essential for cluster scalability. If the ranges are too small, the cluster will face IP exhaustion as it scales.
- D. Correct.
Correct: Enabling private Google access ensures secure communication between the pods and the GKE control plane, which is recommended for private clusters.
- E. Incorrect.
Incorrect: Using the default IP ranges without considering scalability can lead to IP exhaustion and is not suitable for a large-scale cluster.