What is etcd’s Raft consensus algorithm’s role in a Kubernetes cluster and what happens during leader election?

Question

Kubernetes Fundamentals — Hard

What is etcd’s Raft consensus algorithm’s role in a Kubernetes cluster and what happens during leader election?

Accepted Answer

Raft's role in a Kubernetes cluster involves electing a leader to handle writes, ensuring strong consistency. This leader election process is crucial for maintaining quorum and progress. The correct answer outlines this process, highlighting the importance of odd-numbered etcd clusters. Incorrect options misrepresent Raft's purpose or the leader election process.