HA IP Assignments for Servers

IP addresses can now be assigned to multiple servers via our management interface.

This makes it possible to configure high availability (HA) setups where one server has the IP and the second server takes over the IP if the first fails.

This works with both IPv4 and IPv6.

It’s not limited to 2 servers. If you want to configure HA via 3 or 4 servers, that’s fine too.

Our system does not configure HA for you—that’s still up to you since there are so many different ways to do it. This just makes it possible for more than one server to send or receive traffic for an IP.

Load balancing with each server sending back its own outbound traffic directly (vs. having to send it back through the load balancer/proxy) will also work.

The primary IP address assigned when a new server is created cannot be used for HA. For IPv4, you’ll need to request an additional IP from us.

Everything works with IPv4 private networks too, if you want to use HA for private traffic. In this case you’ll select an additional IPv4 address from your existing private network subnet. Likewise for public IPv6 traffic.