Failover solutions for Linux?

Question

linux

Hello. The idea of ​​implementation is as follows:
There is 1 production and 1 backup asterisk.
If the prod. the reverse one should check with a heartbeat that it has fallen and execute, for example, a given script.
What are the options for this scheme?
There are keepalived, but maybe there are similar tools that are simpler? For example, virtual IP is not needed here.

Answer 1

As an option
https://gekk.info/sipping/
Or something similar to check the work of the aster itself. You can also, for example, check in a complex way through AGI or through AMI, in order to make sure that it was Aster that fell, for example, if, for example, the host remained available and pinged normally, and Aster sig-failed ..

Answer 2

arping