How to conduct leader election in etcd cluster

Prerequisites

• Ensure etcd and etcdctl is installed.
• Check for active etcd cluster.

Conduct Leader election

The etcdctl command is used to conduct leader elections in an etcd cluster. It makes sure that only one client can become leader at a time.

etcdctl --endpoints=$ENDPOINTS elect <election-name> [proposal]

etcdctl --endpoints=$ENDPOINTS elect election-name p1

Options

• --endpoints : $ENDPOINTS

Address of each etcd cluster members.

• election-name string

A string identifier for the election. All participants competing for leadership must use the same election name.

• leader-name string

Proposal value of the new leader.

Example

./etcdctl elect my-election proposal1
my-election/694d99fafea88404
proposal1

another election:
./etcdctl elect new-election proposal1
new-election/694d99fafea8840f
proposal1