keepalived configuration for tracking redis master

ha-redis-keepalived.conf

vrrp_script chk_redis_master {
  script "redis-cli info replication | grep -q 'role:master'"
  interval 2
  weight 2
  rise 2
  fall 2
}

vrrp_instance redis_vip {
  interface eth0
  state BACKUP
  virtual_router_id 49
  priority 100
  authentication {
    auth_type PASS
    auth_pass changeme
  }
  virtual_ipaddress {
    10.2.3.49/24 brd 10.2.3.255 dev eth0
  }
  track_script {
    chk_redis_master
  }
}