How to configure a failover IP on FreeBSD

You will find below, information on how to configure a failover IP on Dedibox servers running on FreeBSD.

Failover IP configuration on FreeBSD

1. Connect to your server using SSH.

2. Open the network configuration file in a text editor, for example nano:

   nano /etc/rc.conf 
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3. Add the following line to the file, replace FAILOVER_IP with your failover IP address:

   ifconfig_em0_alias0="inet FAILOVER_IP netmask 255.255.255.255"
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   Your modified configuration file should look like the following example:

   ifconfig_em0="inet IP_ADDRESS netmask 255.255.255.0" 
   defaultrouter="IP_ADDRESS" 
   sshd_enable="YES" 
   ntpd_enable="YES" 
   ntpd_sync_on_start="YES" 
   syslogd_flags="-ss" 
   fsck_y_enable="YES" 
   ifconfig_em0_alias0="inet FAILOVER_IP netmask 255.255.255.255"
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4. Save the file and exit the text editor.

5. Restart the network to activate the new IP address:

   /etc/rc.d/netif restart && /etc/rc.d/routing restart
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