Keepalived

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• healthcheck_interval | int

  Default: 2

  vrrp_script-based health-check interval, in seconds

• network_interface | string

  Network interface name for the VIP. The default value is the result of running the following command: route | grep default | head -n 1 | awk {'print $8'}.

• port | int

  Default: 443

  A port to pass to clients.

• router_id | int

  Default: 23

  Virtual router identifier - a number between 1 and 255 that's unique within the network segment

• vip_hostname | string

  A VIP hostname to pass to clients.

• virtual_ip | string

  Virtual IP/netmask that will be moved between instances, e.g.: 10.1.2.3/16