keepalived.conf

vrrp_script chk_haproxy {
  script "killall -0 haproxy"   # verify the pid existance.  `killall -0 haproxy` or `pidof haproxy`
  interval 2                    # check every 2 seconds
  weight 2                      # add 2 points of prio if OK
}

vrrp_instance VI_1 {
  interface eth0                # interface to monitor
  state MASTER
  virtual_router_id 51          # Assign one ID for this route
  priority 101                  # 101 on master, 100 on backup (Make sure to change this on HAPROXY node2)
  virtual_ipaddress {
    10.0.101.60                 # the virtual IP's
  }
  track_script {
    chk_haproxy
  }
}