Leader election tool with local network check.

go build -o election election.go

./election --help

Usage of ./election:

-e string

    etcd host:port (default "https://127.0.0.1:2379")

-h string

    hostname (default "host1")

-l string

    listen port (default "8000")

-s string

    service name (default "service")

./election -s "service name" -h "hostname" -e "192.168.1.10:2379,192.168.1.11:2379,192.168.1.12:2379," -l "8000"

#curl https://localhost:8000

#{"service":"service name","host":"hostname","status":1}

status = 1: leader

status = 0: follower

status = -1: disconnected from etcd cluster (or local network failure)