Install keepalived by entering the following commands in the terminal:
sudo apt update sudo apt install keepalived
Description:
Failover and monitoring daemon for LVS clusters
keepalived is used for monitoring real servers within a Linux Virtual Server (LVS) cluster. keepalived can be configured to remove real servers from the cluster pool if it stops responding, as well as send a notification email to make the admin aware of the service failure. . In addition, keepalived implements an independent Virtual Router Redundancy Protocol (VRRPv2; see rfc2338 for additional info) framework for director failover. . You need a kernel >= 2.4.28 or >= 2.6.11 for keepalived. See README.Debian for more information.
Homepage: http://keepalived.org
Version: 1:1.3.9-1build1
Section: admin