How to organize floating IP between two load balancers?

Question

Computer networks

Hello. We plan to build some infrastructure consisting of several servers and two load balancers (load balancers) to distribute requests between servers. Two balancers are needed to increase the reliability of the system. But the question is how to make them work with each other, that is, so that if one fails, the requests go through the other? There are references on the Internet about floating IP (floating IP), which is not visible to the end user, but which would do the job. It's like in the picture, only Digital Ocean has this part of their service, and we are hosted by a local provider :)

Answer 1

And if you look towards VRRP?
Here are the links:
https://habrahabr.ru/post/128770/xgu.ru/wiki/VRRP
The
protocol is designed exactly for this: ensuring the availability of the ip-address, raising it, if necessary, on one of the nodes collected in the pool.

Answer 2

You just raise the same IP on the second balancer if the first one is dead, through the same korosink or heartbeat