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Answer: Expand the CIDR range of the relevant subnet for the cluster.
The correct answer is D. When the IPs available for the nodes in a subnet are exhausted, the best course of action is to expand the CIDR range of the relevant subnet for the cluster. This increases the number of available IP addresses and allows the clusters to grow in nodes when needed. Expanding the CIDR range of the existing subnet can be done without disrupting the current setup.
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As an administrator managing multiple VPC-native Google Kubernetes Engine (GKE) clusters within a single subnet, you have encountered an issue where the IP addresses available for the nodes are exhausted. To ensure that your clusters have the capacity to grow in terms of nodes when needed, what steps should you take to resolve this problem?
A
Create a new subnet in the same region as the subnet being used.
B
Add an alias IP range to the subnet used by the GKE clusters.
C
Create a new VPC, and set up VPC peering with the existing VPC.
D
Expand the CIDR range of the relevant subnet for the cluster.