haproxy.cfg

global
  log 0.0.0.0 local1 warning
  maxconn 1000
  master-worker
  stats socket /usr/local/etc/haproxy/api.sock mode 660 expose-fd listeners level user

defaults
  log global
  mode tcp
  listen stats
  bind *:8080
  mode http
  option httpclose
  balance roundrobin
  stats enable
  stats uri /
  stats realm Haproxy\ Statistics
  stats show-legends
  stats hide-version
  listen redis-cluster
  bind 0.0.0.0:6379
  mode tcp
  option tcpka
  option tcplog
  option tcp-check
  tcp-check send info\ replication\r\n
  tcp-check expect string role:master
  server redis01:6379 172.23.0.11:6379 check port 6379 check inter 2s downinter 4s rise 3 fall 2 on-marked-down shutdown-sessions on-marked-up shutdown-backup-sessions
  server redis02:6379 172.23.0.12:6379 check port 6379 check inter 2s downinter 4s rise 3 fall 2 on-marked-down shutdown-sessions backup
  server redis03:6379 172.23.0.13:6379 check port 6379 check inter 2s downinter 4s rise 3 fall 2 on-marked-down shutdown-sessions backup