During a cluster upgrade, you notice etcd is running but the API server cannot connect to it. What is the best immediate action?

hard📝 Troubleshoot Q9 of 15

Kubernetes - Fundamentals

ARestart the kube-scheduler

BScale down all pods to reduce load

CDelete the etcd data directory and restart etcd

DCheck and update the API server's etcd connection parameters

Step-by-Step Solution

Solution:

Step 1: Identify cause of API server-etcd connection failure
If etcd runs but API server cannot connect, connection parameters like endpoints or certificates may be incorrect.
Step 2: Choose corrective action
Updating API server's etcd connection settings is the correct fix; restarting scheduler or deleting data is unrelated or risky.
Final Answer:
Check and update the API server's etcd connection parameters -> Option D
Quick Check:
API server-etcd connection issue = fix API server config [OK]

Quick Trick: Verify API server's etcd connection settings first [OK]

Common Mistakes:

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