I seguenti passi 1 e 2 si applicano in tutti e due i server.

1.

$ univention-install libssl-dev libpopt0 build-essential 
$ cd /tmp 
$ wget https://keepalived.org/software/keepalived-2.0.20.tar.gz
$ cd keepalived-1.2.19 
$ ./configure 
$ make 
$ make install 
$ make clean

2. CLI per eseguire il servizio è /usr/local/sbin/keepalived

Aggiungi in crontab la seguente riga per far avviare al boot keepalived.

@reboot /usr/local/sbin/keepalived

Creare directory e file /etc/keepalived/keepalived.conf per il master

! Configuration File for keepalived

vrrp_instance VI_1 {

  state MASTER
  interface ens18
  virtual_router_id 51
  priority 200
  advert_int 2
  unicast_src_ip 10.17.61.254
      unicast_peer {
              10.17.61.252
      }
  authentication {
      auth_type PASS
      auth_pass $ place secure password here.
  }
  virtual_ipaddress {
      10.17.61.33
  }

}

Creare directory e file /etc/keepalived/keepalived.conf per il backup

! Configuration File for keepalived

vrrp_instance VI_1 {

  state BACKUP
  interface ens18
  virtual_router_id 51
  priority 100
  advert_int 2
  unicast_src_ip 10.17.61.252
      unicast_peer {
              10.17.61.254
      }
  authentication {
      auth_type PASS
      auth_pass $ place secure password here.
  }
  virtual_ipaddress {
      10.17.61.33
  }

}