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Answer: Use Network Connectivity Center to perform a Connectivity Test from Cluster A to Cluster B.
The correct approach is to use Network Connectivity Center (Option B) because it allows connectivity testing between clusters without execute access to nodes or workloads. Connectivity Tests simulate traffic and provide detailed failure insights (e.g., firewall or route issues), directly identifying the network layer where connectivity breaks. Option A and C are infeasible due to access constraints, and Option D, while possible, is less efficient for pinpointing the failure layer as it requires manual log analysis and may not offer real-time diagnostics.
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You are setting up connectivity between Google Kubernetes Engine (GKE) clusters in separate VPCs. The nodes in Cluster A cannot reach the nodes in Cluster B, and you suspect a network misconfiguration. Without execute permissions on workloads or nodes, how can you determine where the network connectivity is failing?
A
Install a toolbox container on the node in Cluster Confirm that the routes to Cluster B are configured appropriately.
B
Use Network Connectivity Center to perform a Connectivity Test from Cluster A to Cluster B.
C
Use a debug container to run the traceroute command from Cluster A to Cluster B and from Cluster B to Cluster A. Identify the common failure point.
D
Enable VPC Flow Logs in both VPCs, and monitor packet drops.
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