Your Dataproc cluster runs in a single Virtual Private Cloud (VPC) network in a single subnet with range 172.16.20.128/25
There are no private IP addresses available in the VPC network.
You want to add new VMs to communicate with your cluster using the minimum number of steps.
What should you do?
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A. B. C. D.A.
The scenario described in the question indicates that there are no available private IP addresses in the existing VPC network, and the objective is to add new VMs to communicate with the Dataproc cluster using the minimum number of steps. To achieve this goal, there are some alternatives to consider:
A. Modify the existing subnet range to 172.16.20.0/24: This alternative implies changing the subnet range to accommodate more IP addresses. However, it is important to note that modifying the subnet range would require recreating the Dataproc cluster, which could impact its availability and incur downtime.
B. Create a new Secondary IP Range in the VPC and configure the VMs to use that range: This alternative involves creating a new secondary IP range within the existing VPC network, which would provide additional IP addresses for the new VMs. The new VMs would be configured to use the secondary IP range. This approach can be a good option since it does not require creating a new VPC network or modifying the existing one.
C. Create a new VPC network for the VMs. Enable VPC Peering between the VMs' VPC network and the Dataproc cluster VPC network: This alternative involves creating a new VPC network for the new VMs. Once the new VPC network is created, VPC peering can be established between the new VPC network and the existing Dataproc cluster VPC network. This approach allows for isolation between the Dataproc cluster and the new VMs while enabling communication between them. However, this approach may require additional configuration, and it can be more complex than the other alternatives.
D. Create a new VPC network for the VMs with a subnet of 172.32.0.0/16. Enable VPC network Peering between the Dataproc VPC network and the VMs VPC network. Configure a custom Route exchange: This alternative is similar to the previous one, but it involves creating a new VPC network with a different subnet range. This approach can provide more flexibility in terms of IP address allocation, but it requires additional configuration to establish VPC peering and custom route exchange.
In conclusion, the most suitable option would be to create a new Secondary IP Range in the existing VPC network and configure the new VMs to use that range. This approach is the simplest and most straightforward option and does not require creating a new VPC network or modifying the existing one.